Airworthiness Directives; The Boeing Company Airplanes, 52948-52953 [2015-20696]
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Federal Register / Vol. 80, No. 170 / Wednesday, September 2, 2015 / Rules and Regulations
Procedures (44 FR 11034, February 26,
1979),
(3) Will not affect intrastate aviation
in Alaska, and
(4) Will not have a significant
economic impact, positive or negative,
on a substantial number of small entities
under the criteria of the Regulatory
Flexibility Act.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation
safety, Incorporation by reference,
Safety.
Adoption of the Amendment
Accordingly, under the authority
delegated to me by the Administrator,
the FAA amends 14 CFR part 39 as
follows:
PART 39—AIRWORTHINESS
DIRECTIVES
1. The authority citation for part 39
continues to read as follows:
■
Authority: 49 U.S.C. 106(g), 40113, 44701.
§ 39.13
[Amended]
2. The FAA amends § 39.13 by adding
the following new AD:
■
2015–18–01 Vulcanair S.p.A.: Amendment
39–18259; Docket No. FAA–2015–3656;
Directorate Identifier 2015–CE–027–AD.
(a) Effective Date
This airworthiness directive (AD) becomes
effective September 22, 2015.
(b) Affected ADs
None.
(c) Applicability
This AD applies to Vulcanair S.p.A.
Models P.68R airplanes, serial numbers 458/
R and subsequent, certificated in any
category.
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(d) Subject
Air Transport Association of America
(ATA) Code 34: Navigation.
(e) Reason
This AD was prompted by mandatory
continuing airworthiness information (MCAI)
issued by the aviation authority of another
country to identify and correct an unsafe
condition on an aviation product. The MCAI
describes the unsafe condition as a
discrepancy in the climb performance
reported in the airplane flight manual (AFM)
and/or pilots operating handbook (POH) in
the actual performance of the airplane. We
are issuing this AD to correct the AFM by
inserting the proper climb performance data
into the manual, which if not corrected could
result in over-estimation of the airplane’s rate
of climb, resulting in impact with
obstructions or terrain.
(f) Actions and Compliance
Unless already done, within 30 days after
the effective date of this AD, insert pages 5–
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1 through 5–34, into Section 5, Revision 27,
dated April 23, 2015, of the Vulcanair
Aircraft P.68R POH/AFM, NOR10.707–30C,
Revision 17, dated July 22, 2013; and pages
1 through 42, into Supplement F, in Section
8, Revision 27; dated April 23, 2015, of the
Vulcanair Aircraft P.68R POH/AFM,
NOR10.707–30C, Revision 17, dated July 22,
2013, following the instructions in Vulcanair
Aircraft P.68 Variants Mandatory Service
Bulletin No. 244, dated April 24, 2015.
(g) Other FAA AD Provisions
The following provisions also apply to this
AD:
(1) Alternative Methods of Compliance
(AMOCs): The Manager, Standards Office,
FAA, has the authority to approve AMOCs
for this AD, if requested using the procedures
found in 14 CFR 39.19. Send information to
ATTN: Mike Kiesov, Aerospace Engineer,
FAA, Small Airplane Directorate, 901 Locust,
Room 301, Kansas City, Missouri 64106;
telephone: (816) 329–4144; fax: (816) 329–
4090; email: mike.kiesov@faa.gov. Before
using any approved AMOC on any airplane
to which the AMOC applies, notify your
appropriate principal inspector (PI) in the
FAA Flight Standards District Office (FSDO),
or lacking a PI, your local FSDO.
(2) Airworthy Product: For any requirement
in this AD to obtain corrective actions from
a manufacturer or other source, use these
actions if they are FAA-approved. Corrective
actions are considered FAA-approved if they
are approved by the State of Design Authority
(or their delegated agent). You are required
to assure the product is airworthy before it
is returned to service.
(h) Related Information
Refer to MCAI European Aviation Safety
Agency (EASA) AD No.: 2015–0145, dated
July 21, 2015, for related information. You
may examine the MCAI on the Internet at
https://www.regulations.gov by searching for
and locating Docket No. FAA–2015–3656.
(i) Material Incorporated by Reference
(1) The Director of the Federal Register
approved the incorporation by reference
(IBR) of the service information listed in this
paragraph under 5 U.S.C. 552(a) and 1 CFR
part 51.
(2) You must use this service information
as applicable to do the actions required by
this AD, unless the AD specifies otherwise.
(i) Vulcanair Aircraft P.68 Variants
Mandatory Service Bulletin No. 244, dated
April 24, 2015.
(ii) Pages 5–1 through 5–34, in Section 5,
Revision 27, dated April 23, 2015, of the
Vulcanair Aircraft P.68R POH/AFM,
NOR10.707–30C, Revision 17, dated July 22,
2013.
(iii) Pages 1 through 42, in Supplement F,
in Section 8, Revision 27; dated April 23,
2015; of the Vulcanair Aircraft P.68R POH/
AFM, NOR10.707–30C, Revision 17, dated
July 22, 2013.
(3) For Vulcanair service information
identified in this AD, contact Vulcanair
S.p.A., Via Giovanni Pascoli 80026 Casoria
NA Italy; telephone: +39 081 5918111; fax:
+39 081 5918172; Internet: https://
www.vulcanair.com/technical-support;
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email:
continued.airworthiness@vulcanair.com.
(4) You may view this service information
at the FAA, Small Airplane Directorate, 901
Locust, Kansas City, Missouri 64106. For
information on the availability of this
material at the FAA, call (816) 329–4148. It
is also available on the Internet at https://
www.regulations.gov by searching for
locating Docket No. FAA–2015–3656.
(5) You may view this service information
that is incorporated by reference at the
National Archives and Records
Administration (NARA). For information on
the availability of this material at NARA, call
202–741–6030, or go to: https://
www.archives.gov/federal-register/cfr/ibrlocations.html.
Issued in Kansas City, Missouri on August
21, 2015.
Earl Lawrence,
Manager, Small Airplane Directorate, Aircraft
Certification Service.
[FR Doc. 2015–21444 Filed 9–1–15; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2014–0523; Directorate
Identifier 2014–NM–050–AD; Amendment
39–18246; AD 2015–17–13]
RIN 2120–AA64
Airworthiness Directives; The Boeing
Company Airplanes
Federal Aviation
Administration (FAA), DOT.
ACTION: Final rule.
AGENCY:
We are adopting a new
airworthiness directive (AD) for certain
The Boeing Company Model 777–200
and –300 series airplanes equipped with
Pratt and Whitney engines. This AD was
prompted by reports of blocked drain
lines at the engine forward strut that
caused flammable fluid to accumulate
in a flammable leakage zone. This AD
requires repetitive functional checks for
blockage of the forward strut drain line
and doing corrective actions if
necessary, and a one-time cleaning of
certain forward strut drain lines. This
AD also provides an optional
replacement of the drain lines and
installation of insulation blankets, and a
revision of the maintenance or
inspection program, as applicable, to
incorporate a certain airworthiness
limitation, which would terminate the
repetitive checks of the forward strut
drain line. We are issuing this AD to
detect and correct blockage of forward
strut drain lines, which could cause
flammable fluids to collect in the
SUMMARY:
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forward strut area and potentially cause
an uncontrolled fire or cause failure of
engine attachment structure and
consequent airplane loss.
DATES: This AD is effective October 7,
2015.
The Director of the Federal Register
approved the incorporation by reference
of a certain publication listed in this AD
as of October 7, 2015.
ADDRESSES: For service information
identified in this AD, contact Boeing
Commercial Airplanes, Attention: Data
& Services Management, P.O. Box 3707,
MC 2H–65, Seattle, WA 98124–2207;
telephone 206–544–5000, extension 1;
fax 206–766–5680; Internet https://
www.myboeingfleet.com. You may view
this referenced service information at
the FAA, Transport Airplane
Directorate, 1601 Lind Avenue SW.,
Renton, WA. For information on the
availability of this material at the FAA,
call 425–227–1221. It is also available
on the Internet at https://
www.regulations.gov by searching for
and locating Docket No. FAA–2014–
0523.
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Examining the AD Docket
You may examine the AD docket on
the Internet at https://
www.regulations.gov by searching for
and locating Docket No. FAA–2014–
0523; or in person at the Docket
Management Facility between 9 a.m.
and 5 p.m., Monday through Friday,
except Federal holidays. The AD docket
contains this AD, the regulatory
evaluation, any comments received, and
other information. The address for the
Docket Office (phone: 800–647–5527) is
Docket Management Facility, U.S.
Department of Transportation, Docket
Operations, M–30, West Building
Ground Floor, Room W12–140, 1200
New Jersey Avenue SE., Washington,
DC 20590.
FOR FURTHER INFORMATION CONTACT:
Kevin Nguyen, Aerospace Engineer,
Propulsion Branch, ANM–140S, FAA,
Seattle Aircraft Certification Office,
1601 Lind Avenue SW., Renton, WA
98057–3356; phone: 425–917–6501; fax:
425–917–6590; email:
kevin.nguyen@faa.gov.
SUPPLEMENTARY INFORMATION:
Discussion
We issued a notice of proposed
rulemaking (NPRM) to amend 14 CFR
part 39 by adding an AD that would
apply to certain The Boeing Company
Model 777–200 and –300 series
airplanes equipped with Pratt and
Whitney engines. The NPRM published
in the Federal Register on August 7,
2014 (79 FR 46201). The NPRM was
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prompted by reports of blocked drain
lines at the engine forward strut that
caused flammable fluid to accumulate
in a flammable leakage zone. The NPRM
proposed to require repetitive functional
checks for blockage of the forward strut
drain line and doing corrective actions
(including cleaning or replacing any
blocked drain lines) if necessary, and a
one-time cleaning of certain forward
strut drain lines. We are issuing this AD
to detect and correct blockage of
forward strut drain lines, which could
cause flammable fluids to collect in the
forward strut area and potentially cause
an uncontrolled fire or cause failure of
engine attachment structure and
consequent airplane loss.
This AD requires revisions to certain
operator maintenance documents to
include new actions (e.g., inspections).
Compliance with these actions is
required by 14 CFR 91.403(c). For
airplanes that have been previously
modified, altered, or repaired in the
areas addressed by this AD, the operator
may not be able to accomplish the
actions described in the revisions. In
this situation, to comply with 14 CFR
91.403(c), the operator must request
approval for an alternative method of
compliance according to paragraph (l) of
this AD. The request should include a
description of changes to the required
inspections that will ensure the
continued operational safety of the
airplane.
Related Rulemaking
On September 23, 2014, we issued AD
2014–20–10, Amendment 39–17983 (79
FR 60331, October 7, 2014), for certain
The Boeing Company Model 777–200
and –300 series airplanes. AD 2014–20–
10 superseded AD 2013–11–14,
Amendment 39–17474 (78 FR 35749,
June 14, 2013). AD 2014–20–10
currently requires repetitive general
visual inspections of the strut forward
dry bay for the presence of hydraulic
fluid, and related investigative and
corrective actions (including checking
drain lines for blockage due to hydraulic
fluid coking; cleaning or replacing drain
lines to allow drainage) if necessary;
and adds airplanes to the applicability.
AD 2014–20–10 was prompted by
reports of hydraulic fluid contamination
(including contamination caused by
hydraulic fluid in its liquid, vapor, and/
or solid (coked) form) found in the strut
forward dry bay. The actions required
by 2014–20–10 are intended to detect
and correct hydraulic fluid
contamination of the strut forward dry
bay, which could result in hydrogen
embrittlement of the titanium forward
engine mount bulkhead fittings, and
consequent inability of the fittings to
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52949
carry engine loads and resulting in
engine separation. Hydrogen
embrittlement also could cause a
through-crack formation across the
fittings through which an engine fire
could breach into the strut, resulting in
an uncontained strut fire.
On December 22, 2014, we issued AD
2015–01–01, Amendment 39–18062 (80
FR 3158, January 22, 2015) for certain
The Boeing Company Model 777–200
and –300 series airplanes. AD 2015–01–
01 superseded AD 2011–09–11,
Amendment 39–16673 (76 FR 24354,
May 2, 2011). AD 2015–01–01 currently
requires repetitive inspections for
hydraulic fluid contamination of the
interior of the strut disconnect
assembly; repetitive inspections for
discrepancies of the interior of the strut
disconnect assembly, if necessary;
repetitive inspections of the exterior of
the strut disconnect assembly for cracks,
if necessary; and corrective action if
necessary. AD 2015–01–01 also
provides an optional terminating action
for the inspections and adds, for certain
airplanes, an inspection of the side and
top cover plates to determine if all cover
plate attach fasteners have been
installed, installing any missing
fasteners including doing an inspection
for damage, and repair if necessary.
AD 2015–01–01, Amendment 39–
18062 (80 FR 3158, January 22, 2015)
was prompted by reports of side and top
cover plates installed with missing
fastener bolts, which could result in an
unsealed opening on the system
disconnect assembly. The actions
required by AD 2015–01–01 are
intended to detect and correct hydraulic
fluid contamination, which could cause
cracking of titanium parts in the system
disconnect assembly. The actions of
2015–01–01 are also intended to detect
and correct missing fasteners, which
could result in unsealed openings on
the system disconnect assembly. Both
unsafe conditions can compromise the
engine firewall and result in fire hazards
for both the engine compartment and
the strut.
Comments
We gave the public the opportunity to
participate in developing this AD. The
following presents the comments
received on the NPRM (79 FR 46201,
August 7, 2014) and the FAA’s response
to each comment.
Request To Add Service Information as
Optional Terminating Action
Boeing and Japan Airlines (JAL)
requested that we add Boeing Special
Attention Service Bulletin 777–71–
0055, dated June 12, 2014, as a
terminating action to the NPRM (79 FR
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46201, August 7, 2014). Boeing
specifically requested that this service
information be added in the
Supplementary Information—Interim
Action section and as a second
paragraph to paragraph (i) of the NPRM.
Boeing requested that paragraph (i) of
the NPRM state that accomplishment of
Boeing Special Attention Service
Bulletin 777–71–0055, dated June 12,
2014, terminates the requirements of
Boeing Special Attention Service
Bulletin 777–54–0027, Revision 1, dated
September 12, 2013, and is an
alternative means of compliance with
this AD.
We agree. Boeing Special Attention
Service Bulletin 777–71–0055, dated
June 12, 2014, which has since been
revised as Revision 1, dated April 15,
2015, describes procedures that address
the identified unsafe condition. These
procedures include removing the
forward strut drain lines; cleaning the
left systems disconnect, strut forward
lower spar, and forward fireseal pan
drain lines; installing new forward strut
drain lines and insulation blankets; and
doing a functional leak check of the
forward strut drain lines, and repair if
any leaking is found.
We have added new paragraph (i) to
this AD to provide optional terminating
action and redesignated subsequent
paragraphs accordingly. Paragraph (i) of
this AD states that accomplishment of
Boeing Special Attention Service
Bulletin 777–71–0055, Revision 1, dated
April 15, 2015, along with a revision of
the maintenance or inspection program,
as applicable, to incorporate a certain
airworthiness limitation, terminates the
requirements of paragraph (g)(1) of this
AD at the modified area only.
We have also added new paragraph (j)
of this AD to specify that no alternative
actions or intervals may be used after
incorporating the airworthiness
limitation unless the actions or intervals
are approved as an alternative method
of compliance (AMOC) in accordance
with the procedures specified in
paragraph (l) of this AD. We
redesignated subsequent paragraphs
accordingly.
We have also added new paragraph
(k) to this AD to give credit for actions
required by paragraph (i) of this AD, if
those actions were performed before the
effective date of this AD using Boeing
Special Attention Service Bulletin 777–
71–0055, dated June 12, 2014. We
redesignated subsequent paragraphs
accordingly.
In addition, we updated the ‘‘Interim
Action’’ paragraph in the
SUPPLEMENTARY INFORMATION section of
the preamble of this final rule
accordingly.
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Request To Remove Requirement To
Clean Forward Strut Drain Line
All Nippon Airways (ANA) requested
that we revise the NPRM (79 FR 46201,
August 7, 2014) to remove the phrase
‘‘clean the forward strut drain line’’
from paragraph (g)(1) of the NPRM.
ANA stated that cleaning the forward
strut drain line is not required if part 1,
condition 1, in paragraph 3.B ‘‘Work
Instructions,’’ of Boeing Special
Attention Service Bulletin 777–54–
0027, Revision 1, dated September 12,
2013, is met.
We agree because condition 1 is met
when 354 or more ounces of water are
collected within 2 minutes after the start
of pouring water for the functional
check of the forward strut drain line.
Cleaning the blocked drain line is part
of the corrective actions in condition 2
as specified in Boeing Special Attention
Service Bulletin 777–54–0027, Revision
1, dated September 12, 2013. This
change does not compromise safety or
the intent of the AD, therefore, we have
removed the phrase ‘‘clean the forward
strut drain line,’’ from paragraph (g)(1)
of this final rule.
Request To Allow Alternate Tee Fitting
Part Numbers
ANA requested the NPRM (79 FR
46201, August 7, 2014) include three
part numbers of the tee fitting. ANA
indicated that paragraph 2.C., of Boeing
Special Attention Service Bulletin 777–
54–0027, Revision 1, dated September
12, 2013, states BACT16BR120612J tee
fitting is required if replacement is
necessary. ANA stated tee fittings
having part numbers
BACT16BR120612J,
BACT16BR120612JN, and
AS4139J120612 may be used according
to a Boeing product standard parts list.
We agree because the tee fitting part
number BACT16BR120612J listed in
Boeing Special Attention Service
Bulletin 777–54–0027, Revision 1, dated
September 12, 2013, is obsolete. We
have added text to paragraph (g)(1) of
this AD to allow alternate tee fitting part
numbers BACT16BR120612JN and
AS4139J120612, as long as the
installation of the forward strut drain
lines is accomplished in accordance
with the Accomplishment Instructions
of Boeing Special Attention Service
Bulletin 777–54–0027, Revision 1, dated
September 12, 2013.
Conclusion
We reviewed the relevant data,
considered the comments received, and
determined that air safety and the
public interest require adopting this AD
with the changes described previously
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and minor editorial changes. We have
determined that these minor changes:
• Are consistent with the intent that
was proposed in the NPRM (79 FR
46201, August 7, 2014) for correcting
the unsafe condition; and
• Do not add any additional burden
upon the public than was already
proposed in the NPRM (79 FR 46201,
August 7, 2014).
We also determined that these
changes will not increase the economic
burden on any operator or increase the
scope of this AD.
Interim Action
We consider this AD interim action.
The manufacturer has issued Boeing
Special Attention Service Bulletin 777–
71–0055, Revision 1, dated April 15,
2015, which describes a modification
that addresses the unsafe condition
identified in this AD. This service
information is an optional action in this
AD. If final action is later identified, we
might consider further rulemaking.
Related Service Information Under 1
CFR Part 51
We reviewed the following Boeing
service information.
• Boeing Special Attention Service
Bulletin 777–54–0027, Revision 1, dated
September 12, 2013. The service
information describes procedures for
doing a functional check for blockage of
the forward strut drain lines and
corrective actions.
• Boeing Special Attention Service
Bulletin 777–71–0055, Revision 1, dated
April 15, 2015. This service information
describes procedures for replacing the
forward strut drain lines and adding
insulation blankets.
• Airworthiness Limitation 54–AWL–
01, ‘‘Forward Strut Drain Line,’’ Section
D.4, Pratt and Whitney Forward Strut
Drain Line, of the Boeing 777
Maintenance Planning Data (MPD)
Document Section 9, Airworthiness
Limitations (AWLs) and Certification
Maintenance Requirements (CMRs),
D622W001–9, Revision October 2014.
This service information describes an
airworthiness limitation task for the
functional check of the forward strut
drain line.
This service information is reasonably
available because the interested parties
have access to it through their normal
course of business or by the means
identified in the ADDRESSES section of
this AD.
Costs of Compliance
We estimate that this AD affects 54
airplanes of U.S. registry.
We estimate the following costs to
comply with this AD:
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ESTIMATED COSTS: REQUIRED ACTIONS
Action
Labor cost
Repetitive functional checks
of 2 struts per inspection
cycle.
One-time cleaning ..................
9 work-hours × $85 per hour
= $765 per inspection cycle.
13 work-hours × $85 per hour
= $1,105.
We estimate the following costs to do
any necessary repairs or replacements
that would be required based on the
Parts cost
Cost per product
Cost on U.S. operators
$0
$765 per inspection cycle ......
$41,310 per inspection cycle.
0
1,105 ......................................
59,670.
results of the inspection. We have no
way of determining the number of
aircraft that might need these
replacements:
ON-CONDITION COSTS
Action
Labor cost
Repair drain tube assemblies in up to 2 struts .....
Replace drain tube assemblies in up to 2 struts ..
Up to 5 work-hours × $85 per hour = $425 .........
Up to 5 work-hours × $85 per hour = $425 .........
According to the manufacturer, some
of the costs of this AD may be covered
under warranty, thereby reducing the
Parts cost
cost impact on affected individuals. We
do not control warranty coverage for
affected individuals. As a result, we
$0
Up to $4,484
Cost per product
Up to $425.
Up to $4,909.
have included all costs in our cost
estimate.
ESTIMATED COSTS: OPTIONAL ACTIONS
Action
Labor Cost
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Removal of drain tube assemblies ...............................
Cleaning of drain lines ..................................................
Installation of new drain lines and insulation blankets
Leak check of drain lines .............................................
Revision of maintenance or inspection program ..........
Authority for This Rulemaking
Title 49 of the United States Code
specifies the FAA’s authority to issue
rules on aviation safety. Subtitle I,
section 106, describes the authority of
the FAA Administrator. Subtitle VII:
Aviation Programs, describes in more
detail the scope of the Agency’s
authority.
We are issuing this rulemaking under
the authority described in Subtitle VII,
Part A, Subpart III, Section 44701:
‘‘General requirements.’’ Under that
section, Congress charges the FAA with
promoting safe flight of civil aircraft in
air commerce by prescribing regulations
for practices, methods, and procedures
the Administrator finds necessary for
safety in air commerce. This regulation
is within the scope of that authority
because it addresses an unsafe condition
that is likely to exist or develop on
products identified in this rulemaking
action.
Regulatory Findings
This AD will not have federalism
implications under Executive Order
13132. This AD will not have a
substantial direct effect on the States, on
the relationship between the national
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1
6
2
1
1
work-hour × $85 per hour = $85 ...............................
work-hours × $85 per hour = $510 ...........................
work-hours × $85 per hour = $170 ...........................
work-hour × $85 per hour = $85 ...............................
work-hour × $85 per hour = $85 ...............................
government and the States, or on the
distribution of power and
responsibilities among the various
levels of government.
For the reasons discussed above, I
certify that this AD:
(1) Is not a ‘‘significant regulatory
action’’ under Executive Order 12866,
(2) Is not a ‘‘significant rule’’ under
DOT Regulatory Policies and Procedures
(44 FR 11034, February 26, 1979),
(3) Will not affect intrastate aviation
in Alaska, and
(4) Will not have a significant
economic impact, positive or negative,
on a substantial number of small entities
under the criteria of the Regulatory
Flexibility Act.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation
safety, Incorporation by reference,
Safety.
Adoption of the Amendment
Accordingly, under the authority
delegated to me by the Administrator,
the FAA amends 14 CFR part 39 as
follows:
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Parts Cost
Frm 00017
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$0
$0
$17,250
$0
$0
Cost per
product
$85
$510
$17,420
$85
$85
PART 39—AIRWORTHINESS
DIRECTIVES
1. The authority citation for part 39
continues to read as follows:
■
Authority: 49 U.S.C. 106(g), 40113, 44701.
§ 39.13
[Amended]
2. The FAA amends § 39.13 by adding
the following new airworthiness
directive (AD):
■
2015–17–13 The Boeing Company:
Amendment 39–18246 ; Docket No.
FAA–2014–0523; Directorate Identifier
2014–NM–050–AD.
(a) Effective Date
This AD is effective October 7, 2015.
(b) Affected ADs
None.
(c) Applicability
This AD applies to The Boeing
Company Model 777–200 and -300
series airplanes, certificated in any
category, equipped with Pratt &
Whitney engines, as identified in Boeing
Special Attention Service Bulletin 777–
54–0027, Revision 1, dated September
12, 2013.
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disconnect, the strut forward lower spar,
and the forward fire seal pan inlets.
(d) Subject
Air Transport Association (ATA) of
America Code 54, Nacelles/pylons.
(h) Exception to the Service Information
Specifications
(e) Unsafe Condition
This AD was prompted by reports of
blocked drain lines at the engine
forward strut that caused flammable
fluid to accumulate in a flammable
leakage zone. We are proposing this AD
to detect and correct blockage of
forward strut drain lines, which could
cause flammable fluids to collect in the
forward strut area and potentially cause
an uncontrolled fire or cause failure of
engine attachment structure and
consequent airplane loss.
(f) Compliance
Comply with this AD within the
compliance times specified, unless
already done.
asabaliauskas on DSK5VPTVN1PROD with RULES
(g) Functional Check, Cleaning, and
Corrective Actions
At the applicable times specified in
paragraph 1.E., ‘‘Compliance,’’ of Boeing
Special Attention Service Bulletin 777–
54–0027, Revision 1, dated September
12, 2013, except as provided by
paragraph (h) of this AD, do the actions
specified in paragraphs (g)(1) and (g)(2)
of this AD, in accordance with the
Accomplishment Instructions of Boeing
Special Attention Service Bulletin 777–
54–0027, Revision 1, dated September
12, 2013. Repeat the functional check
required by paragraph (g)(1) of this AD,
thereafter at the applicable times
specified in paragraph 1.E.,
‘‘Compliance,’’ of Boeing Special
Attention Service Bulletin 777–54–
0027, Revision 1, dated September 12,
2013, until the terminating action
specified in paragraph (i) of this AD is
done.
(1) Do a functional check for blockage
of the forward strut drain line of the left
and right strut and do all applicable
corrective actions (including cleaning or
replacing blocked drain tubes, repairing
fluid leaks, and cleaning the inlet drain
screen on the right system disconnect
assembly inlet). Do all applicable
corrective actions before further flight.
Alternate tee fitting part numbers
BACT16BR120612JN and
AS4139J120612 may be used during the
replacement of the forward strut drain
lines, provided the installation is
performed in accordance with the
Accomplishment Instructions of Boeing
Special Attention Service Bulletin 777–
54–0027, Revision 1, dated September
12, 2013.
(2) Do a one-time cleaning of the
smaller forward strut drain lines
connected to the left systems
VerDate Sep<11>2014
19:00 Sep 01, 2015
Jkt 235001
Where Boeing Special Attention
Service Bulletin 777–54–0027, Revision
1, dated September 12, 2013, refers to a
compliance time ‘‘after the Revision 1
date of this Service Bulletin,’’ this AD
requires compliance within the
specified compliance time after the
effective date of this AD.
(i) Optional Terminating Action
Accomplishment of the actions
specified in paragraphs (i)(1) through
(i)(4) of this AD, for both the left and
right struts, in accordance with the
Accomplishment Instructions of Boeing
Special Attention Service Bulletin 777–
71–0055, Revision 1, dated April 15,
2015, and accomplishment of the
revision specified in paragraph (i)(5) of
this AD, terminates the repetitive
functional checks required by paragraph
(g)(1) of this AD at the modified area
only.
(1) Disconnect and remove the
forward strut drain lines.
(2) Clean the left systems disconnect,
the strut forward lower spar, and the
forward fireseal pan drain lines.
(3) Install new forward strut drain
lines and insulation blankets.
(4) Do a leak check of the forward
strut drain lines, for any leak, and repair
if any leaking is found.
(5) Revise the maintenance or
inspection program, as applicable, to
incorporate Airworthiness Limitation
54–AWL–01, ‘‘Forward Strut Drain
Line’’, Section D.4, Pratt and Whitney
Forward Strut Drain Line, of the Boeing
777 Maintenance Planning Data (MPD)
Document Section 9, Airworthiness
Limitations (AWLs) and Certification
Maintenance Requirements (CMRs),
D622W001–9, Revision October 2014.
The initial compliance time for
Airworthiness Limitation 54–AWL–01
is within 2,000 flight cycles or 1,500
days, whichever occurs first, after doing
the actions specified in paragraphs (i)(1)
through (i)(4) of this AD.
(j) No Alternative Actions or Intervals
After accomplishing the revision
required by paragraph (i)(5) of this AD,
no alternative actions (e.g., inspections)
or intervals may be used unless the
actions or intervals are approved as an
alternative method of compliance
(AMOC) in accordance with the
procedures specified in paragraph (l) of
this AD.
PO 00000
Frm 00018
Fmt 4700
Sfmt 4700
(k) Credit for Previous Actions
This paragraph provides credit for
actions required by paragraph (i) of this
AD, if those actions were performed
before the effective date of this AD using
Boeing Special Attention Service
Bulletin 777–71–0055, dated June 12,
2014, which is not incorporated by
reference in this AD.
(l) Alternative Methods of Compliance
(AMOCs)
(1) The Manager, Seattle Aircraft
Certification Office (ACO), FAA, has the
authority to approve AMOCs for this
AD, if requested using the procedures
found in 14 CFR 39.19. In accordance
with 14 CFR 39.19, send your request to
your principal inspector or local Flight
Standards District Office, as
appropriate. If sending information
directly to the manager of the ACO,
send it to the attention of the person
identified in paragraph (m)(1) of this
AD. Information may be emailed to: 9ANM-Seattle-ACO-AMOC-Requests@
faa.gov.
(2) Before using any approved AMOC,
notify your appropriate principal
inspector, or lacking a principal
inspector, the manager of the local flight
standards district office/certificate
holding district office.
(3) An AMOC that provides an
acceptable level of safety may be used
for any repair required by this AD if it
is approved by the Boeing Commercial
Airplanes Organization Designation
Authorization (ODA) that has been
authorized by the Manager, Seattle
ACO, to make those findings. For a
repair method to be approved, the repair
must meet the certification basis of the
airplane, and the approval must
specifically refer to this AD.
(m) Related Information
(1) For more information about this
AD, contact Kevin Nguyen, Aerospace
Engineer, Propulsion Branch, ANM–
140S, FAA, Seattle Aircraft Certification
Office, 1601 Lind Avenue SW., Renton,
WA 98057–3356; phone: 425–917–6501;
fax: 425–917–6590; email:
kevin.nguyen@faa.gov.
(2) Service information identified in
this AD that is not incorporated by
reference is available at the addresses
specified in paragraphs (n)(3) and (n)(4)
of this AD.
(n) Material Incorporated by Reference
(1) The Director of the Federal
Register approved the incorporation by
reference (IBR) of the service
information listed in this paragraph
under 5 U.S.C. 552(a) and 1 CFR part 51.
(2) You must use this service
information as applicable to do the
E:\FR\FM\02SER1.SGM
02SER1
Federal Register / Vol. 80, No. 170 / Wednesday, September 2, 2015 / Rules and Regulations
actions required by this AD, unless the
AD specifies otherwise.
(i) Boeing Special Attention Service
Bulletin 777–54–0027, Revision 1, dated
September 12, 2013.
(ii) Boeing Special Attention Service
Bulletin 777–71–0055, Revision 1, dated
April 15, 2015.
(iii) Airworthiness Limitation 54–
AWL–01, ‘‘Forward Strut Drain Line’’,
Section D.4, Pratt and Whitney Forward
Strut Drain Line, of the Boeing 777
Maintenance Planning Data (MPD)
Document Section 9, Airworthiness
Limitations (AWLs) and Certification
Maintenance Requirements (CMRs),
D622W001–9, Revision October 2014.
(3) For service information identified
in this AD, contact Boeing Commercial
Airplanes, Attention: Data & Services
Management, P. O. Box 3707, MC 2H–
65, Seattle, WA 98124–2207; telephone
206–544–5000, extension 1; fax 206–
766–5680; Internet https://
www.myboeingfleet.com.
(4) You may view this service
information at FAA, Transport Airplane
Directorate, 1601 Lind Avenue SW.,
Renton, WA. For information on the
availability of this material at the FAA,
call 425–227–1221.
(5) You may view this service
information that is incorporated by
reference at the National Archives and
Records Administration (NARA). For
information on the availability of this
material at NARA, call 202–741–6030,
or go to: https://www.archives.gov/
federal-register/cfr/ibr-locations.html.
Issued in Renton, Washington, on August
14, 2015.
Michael Kaszycki,
Acting Manager, Transport Airplane
Directorate, Aircraft Certification Service.
[FR Doc. 2015–20696 Filed 9–1–15; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2014–0586; Directorate
Identifier 2013–NM–255–AD; Amendment
39–18256; AD 2015–17–23]
asabaliauskas on DSK5VPTVN1PROD with RULES
RIN 2120–AA64
Airworthiness Directives; Empresa
Brasileira de Aeronautica S.A.
(Embraer) Airplanes
Federal Aviation
Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule.
AGENCY:
We are adopting a new
airworthiness directive (AD) for all
SUMMARY:
VerDate Sep<11>2014
19:00 Sep 01, 2015
Jkt 235001
Empresa Brasileira de Aeronautica S.A.
(Embraer) Model EMB–135BJ airplanes.
This AD was prompted by a
determination that more restrictive fuel
limitations are needed. This AD requires
revising the maintenance or inspection
program to incorporate new compliance
times and fuel limitations. We are
issuing this AD to detect and correct
fatigue cracking of various structural
elements and prevent ignition sources
in the fuel system.
DATES: This AD becomes effective
October 7, 2015.
The Director of the Federal Register
approved the incorporation by reference
of certain publications listed in this AD
as of October 7, 2015.
ADDRESSES: You may examine the AD
docket on the Internet at https://
www.regulations.gov/#!docketDetail;
D=FAA-2014-0586 or in person at the
Docket Management Facility, U.S.
Department of Transportation, Docket
Operations, M–30, West Building
Ground Floor, Room W12–140, 1200
New Jersey Avenue SE., Washington,
DC.
For service information identified in
this AD, contact Empresa Brasileira de
Aeronautica S.A. (Embraer), Technical
Publications Section (PC 060), Av.
Brigadeiro Faria Lima, 2170—Putim—
˜
12227–901 Sao Jose dos Campos—SP—
Brasil; telephone +55 12 3927–5852 or
+55 12 3309–0732; fax +55 12 3927–
7546; email distrib@embraer.com.br;
Internet https://www.flyembraer.com.
You may view this referenced service
information at the FAA, Transport
Airplane Directorate, 1601 Lind Avenue
SW., Renton, WA. For information on
the availability of this material at the
FAA, call 425–227–1221. It is also
available on the Internet at https://
www.regulations.gov by searching for
and locating Docket No. FAA–2014–
0586.
FOR FURTHER INFORMATION CONTACT:
Todd Thompson, Aerospace Engineer,
International Branch, ANM–116,
Transport Airplane Directorate, FAA,
1601 Lind Avenue SW., Renton, WA
98057–3356; telephone 425–227–1175;
fax 425–227–1149.
SUPPLEMENTARY INFORMATION:
Discussion
We issued a notice of proposed
rulemaking (NPRM) to amend 14 CFR
part 39 by adding an AD that would
apply to all Empresa Brasileira de
Aeronautica S.A. (Embraer) Model
EMB–135BJ airplanes. The NPRM
published in the Federal Register on
August 26, 2014 (79 FR 50857). The
NPRM was prompted by a
determination that more restrictive fuel
PO 00000
Frm 00019
Fmt 4700
Sfmt 4700
52953
limitations are needed. The NPRM
proposed to require revising the
maintenance or inspection program to
incorporate new compliance times and
fuel limitations. We are issuing this AD
to detect and correct fatigue cracking of
various structural elements and prevent
ignition sources in the fuel system.
ˆ
The Agencia Nacional De Aviacao
¸˜
Civil (ANAC), which is the aviation
authority for Brazil, has issued Brazilian
Airworthiness Directive 2013–12–02,
effective December 27, 2013 (referred to
after this as the Mandatory Continuing
Airworthiness Information, or ‘‘the
MCAI’’), to correct an unsafe condition
for all Empresa Brasileira de
Aeronautica S.A. (Embraer) Model
EMB–135BJ airplanes. The MCAI states:
This [Brazilian] AD was prompted by a
new revision to the Airworthiness
Limitations Requirements of the Maintenance
Planning Guide (MPG–1483). We are issuing
this [Brazilian] AD to allow timely detection
and correction of fatigue cracking of various
structural elements, and to allow the
necessary preclusion of ignition sources in
the fuel system.
Required actions include revising the
maintenance or inspection program, as
applicable, to incorporate new
compliance times and fuel limitations.
You may examine the MCAI in the AD
docket on the internet at https://
www.regulations.gov/#!docketDetail;
D=FAA-2014-0586.
Comments
We gave the public the opportunity to
participate in developing this AD. We
received no comments on the NPRM (79
FR 50857, August 26, 2014) or on the
determination of the cost to the public.
Conclusion
We reviewed the relevant data and
determined that air safety and the
public interest require adopting this AD
as proposed except for minor editorial
changes. We have determined that these
minor changes:
• Are consistent with the intent that
was proposed in the NPRM (79 FR
50857, dated August 16, 2014) for
correcting the unsafe condition; and
• Do not add any additional burden
upon the public than was already
proposed in the NPRM (79 FR 50857,
dated August 16, 2014).
Related Service Information Under 1
CFR Part 51
Embraer has issued the following
service information.
• Temporary Revision (TR) 8–1, dated
October 26, 2012, to the Embraer Legacy
BJ Maintenance Planning Guide (MPG),
MPG–1483.
E:\FR\FM\02SER1.SGM
02SER1
]]>Agencies
[Federal Register Volume 80, Number 170 (Wednesday, September 2, 2015)]
[Rules and Regulations]
[Pages 52948-52953]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2015-20696]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2014-0523; Directorate Identifier 2014-NM-050-AD;
Amendment 39-18246; AD 2015-17-13]
RIN 2120-AA64
Airworthiness Directives; The Boeing Company Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: We are adopting a new airworthiness directive (AD) for certain
The Boeing Company Model 777-200 and -300 series airplanes equipped
with Pratt and Whitney engines. This AD was prompted by reports of
blocked drain lines at the engine forward strut that caused flammable
fluid to accumulate in a flammable leakage zone. This AD requires
repetitive functional checks for blockage of the forward strut drain
line and doing corrective actions if necessary, and a one-time cleaning
of certain forward strut drain lines. This AD also provides an optional
replacement of the drain lines and installation of insulation blankets,
and a revision of the maintenance or inspection program, as applicable,
to incorporate a certain airworthiness limitation, which would
terminate the repetitive checks of the forward strut drain line. We are
issuing this AD to detect and correct blockage of forward strut drain
lines, which could cause flammable fluids to collect in the
[[Page 52949]]
forward strut area and potentially cause an uncontrolled fire or cause
failure of engine attachment structure and consequent airplane loss.
DATES: This AD is effective October 7, 2015.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of October 7,
2015.
ADDRESSES: For service information identified in this AD, contact
Boeing Commercial Airplanes, Attention: Data & Services Management,
P.O. Box 3707, MC 2H-65, Seattle, WA 98124-2207; telephone 206-544-
5000, extension 1; fax 206-766-5680; Internet https://www.myboeingfleet.com. You may view this referenced service information
at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW.,
Renton, WA. For information on the availability of this material at the
FAA, call 425-227-1221. It is also available on the Internet at https://www.regulations.gov by searching for and locating Docket No. FAA-2014-
0523.
Examining the AD Docket
You may examine the AD docket on the Internet at https://www.regulations.gov by searching for and locating Docket No. FAA-2014-
0523; or in person at the Docket Management Facility between 9 a.m. and
5 p.m., Monday through Friday, except Federal holidays. The AD docket
contains this AD, the regulatory evaluation, any comments received, and
other information. The address for the Docket Office (phone: 800-647-
5527) is Docket Management Facility, U.S. Department of Transportation,
Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200
New Jersey Avenue SE., Washington, DC 20590.
FOR FURTHER INFORMATION CONTACT: Kevin Nguyen, Aerospace Engineer,
Propulsion Branch, ANM-140S, FAA, Seattle Aircraft Certification
Office, 1601 Lind Avenue SW., Renton, WA 98057-3356; phone: 425-917-
6501; fax: 425-917-6590; email: kevin.nguyen@faa.gov.
SUPPLEMENTARY INFORMATION:
Discussion
We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR
part 39 by adding an AD that would apply to certain The Boeing Company
Model 777-200 and -300 series airplanes equipped with Pratt and Whitney
engines. The NPRM published in the Federal Register on August 7, 2014
(79 FR 46201). The NPRM was prompted by reports of blocked drain lines
at the engine forward strut that caused flammable fluid to accumulate
in a flammable leakage zone. The NPRM proposed to require repetitive
functional checks for blockage of the forward strut drain line and
doing corrective actions (including cleaning or replacing any blocked
drain lines) if necessary, and a one-time cleaning of certain forward
strut drain lines. We are issuing this AD to detect and correct
blockage of forward strut drain lines, which could cause flammable
fluids to collect in the forward strut area and potentially cause an
uncontrolled fire or cause failure of engine attachment structure and
consequent airplane loss.
This AD requires revisions to certain operator maintenance
documents to include new actions (e.g., inspections). Compliance with
these actions is required by 14 CFR 91.403(c). For airplanes that have
been previously modified, altered, or repaired in the areas addressed
by this AD, the operator may not be able to accomplish the actions
described in the revisions. In this situation, to comply with 14 CFR
91.403(c), the operator must request approval for an alternative method
of compliance according to paragraph (l) of this AD. The request should
include a description of changes to the required inspections that will
ensure the continued operational safety of the airplane.
Related Rulemaking
On September 23, 2014, we issued AD 2014-20-10, Amendment 39-17983
(79 FR 60331, October 7, 2014), for certain The Boeing Company Model
777-200 and -300 series airplanes. AD 2014-20-10 superseded AD 2013-11-
14, Amendment 39-17474 (78 FR 35749, June 14, 2013). AD 2014-20-10
currently requires repetitive general visual inspections of the strut
forward dry bay for the presence of hydraulic fluid, and related
investigative and corrective actions (including checking drain lines
for blockage due to hydraulic fluid coking; cleaning or replacing drain
lines to allow drainage) if necessary; and adds airplanes to the
applicability. AD 2014-20-10 was prompted by reports of hydraulic fluid
contamination (including contamination caused by hydraulic fluid in its
liquid, vapor, and/or solid (coked) form) found in the strut forward
dry bay. The actions required by 2014-20-10 are intended to detect and
correct hydraulic fluid contamination of the strut forward dry bay,
which could result in hydrogen embrittlement of the titanium forward
engine mount bulkhead fittings, and consequent inability of the
fittings to carry engine loads and resulting in engine separation.
Hydrogen embrittlement also could cause a through-crack formation
across the fittings through which an engine fire could breach into the
strut, resulting in an uncontained strut fire.
On December 22, 2014, we issued AD 2015-01-01, Amendment 39-18062
(80 FR 3158, January 22, 2015) for certain The Boeing Company Model
777-200 and -300 series airplanes. AD 2015-01-01 superseded AD 2011-09-
11, Amendment 39-16673 (76 FR 24354, May 2, 2011). AD 2015-01-01
currently requires repetitive inspections for hydraulic fluid
contamination of the interior of the strut disconnect assembly;
repetitive inspections for discrepancies of the interior of the strut
disconnect assembly, if necessary; repetitive inspections of the
exterior of the strut disconnect assembly for cracks, if necessary; and
corrective action if necessary. AD 2015-01-01 also provides an optional
terminating action for the inspections and adds, for certain airplanes,
an inspection of the side and top cover plates to determine if all
cover plate attach fasteners have been installed, installing any
missing fasteners including doing an inspection for damage, and repair
if necessary.
AD 2015-01-01, Amendment 39-18062 (80 FR 3158, January 22, 2015)
was prompted by reports of side and top cover plates installed with
missing fastener bolts, which could result in an unsealed opening on
the system disconnect assembly. The actions required by AD 2015-01-01
are intended to detect and correct hydraulic fluid contamination, which
could cause cracking of titanium parts in the system disconnect
assembly. The actions of 2015-01-01 are also intended to detect and
correct missing fasteners, which could result in unsealed openings on
the system disconnect assembly. Both unsafe conditions can compromise
the engine firewall and result in fire hazards for both the engine
compartment and the strut.
Comments
We gave the public the opportunity to participate in developing
this AD. The following presents the comments received on the NPRM (79
FR 46201, August 7, 2014) and the FAA's response to each comment.
Request To Add Service Information as Optional Terminating Action
Boeing and Japan Airlines (JAL) requested that we add Boeing
Special Attention Service Bulletin 777-71-0055, dated June 12, 2014, as
a terminating action to the NPRM (79 FR
[[Page 52950]]
46201, August 7, 2014). Boeing specifically requested that this service
information be added in the Supplementary Information--Interim Action
section and as a second paragraph to paragraph (i) of the NPRM. Boeing
requested that paragraph (i) of the NPRM state that accomplishment of
Boeing Special Attention Service Bulletin 777-71-0055, dated June 12,
2014, terminates the requirements of Boeing Special Attention Service
Bulletin 777-54-0027, Revision 1, dated September 12, 2013, and is an
alternative means of compliance with this AD.
We agree. Boeing Special Attention Service Bulletin 777-71-0055,
dated June 12, 2014, which has since been revised as Revision 1, dated
April 15, 2015, describes procedures that address the identified unsafe
condition. These procedures include removing the forward strut drain
lines; cleaning the left systems disconnect, strut forward lower spar,
and forward fireseal pan drain lines; installing new forward strut
drain lines and insulation blankets; and doing a functional leak check
of the forward strut drain lines, and repair if any leaking is found.
We have added new paragraph (i) to this AD to provide optional
terminating action and redesignated subsequent paragraphs accordingly.
Paragraph (i) of this AD states that accomplishment of Boeing Special
Attention Service Bulletin 777-71-0055, Revision 1, dated April 15,
2015, along with a revision of the maintenance or inspection program,
as applicable, to incorporate a certain airworthiness limitation,
terminates the requirements of paragraph (g)(1) of this AD at the
modified area only.
We have also added new paragraph (j) of this AD to specify that no
alternative actions or intervals may be used after incorporating the
airworthiness limitation unless the actions or intervals are approved
as an alternative method of compliance (AMOC) in accordance with the
procedures specified in paragraph (l) of this AD. We redesignated
subsequent paragraphs accordingly.
We have also added new paragraph (k) to this AD to give credit for
actions required by paragraph (i) of this AD, if those actions were
performed before the effective date of this AD using Boeing Special
Attention Service Bulletin 777-71-0055, dated June 12, 2014. We
redesignated subsequent paragraphs accordingly.
In addition, we updated the ``Interim Action'' paragraph in the
SUPPLEMENTARY INFORMATION section of the preamble of this final rule
accordingly.
Request To Remove Requirement To Clean Forward Strut Drain Line
All Nippon Airways (ANA) requested that we revise the NPRM (79 FR
46201, August 7, 2014) to remove the phrase ``clean the forward strut
drain line'' from paragraph (g)(1) of the NPRM. ANA stated that
cleaning the forward strut drain line is not required if part 1,
condition 1, in paragraph 3.B ``Work Instructions,'' of Boeing Special
Attention Service Bulletin 777-54-0027, Revision 1, dated September 12,
2013, is met.
We agree because condition 1 is met when 354 or more ounces of
water are collected within 2 minutes after the start of pouring water
for the functional check of the forward strut drain line. Cleaning the
blocked drain line is part of the corrective actions in condition 2 as
specified in Boeing Special Attention Service Bulletin 777-54-0027,
Revision 1, dated September 12, 2013. This change does not compromise
safety or the intent of the AD, therefore, we have removed the phrase
``clean the forward strut drain line,'' from paragraph (g)(1) of this
final rule.
Request To Allow Alternate Tee Fitting Part Numbers
ANA requested the NPRM (79 FR 46201, August 7, 2014) include three
part numbers of the tee fitting. ANA indicated that paragraph 2.C., of
Boeing Special Attention Service Bulletin 777-54-0027, Revision 1,
dated September 12, 2013, states BACT16BR120612J tee fitting is
required if replacement is necessary. ANA stated tee fittings having
part numbers BACT16BR120612J, BACT16BR120612JN, and AS4139J120612 may
be used according to a Boeing product standard parts list.
We agree because the tee fitting part number BACT16BR120612J listed
in Boeing Special Attention Service Bulletin 777-54-0027, Revision 1,
dated September 12, 2013, is obsolete. We have added text to paragraph
(g)(1) of this AD to allow alternate tee fitting part numbers
BACT16BR120612JN and AS4139J120612, as long as the installation of the
forward strut drain lines is accomplished in accordance with the
Accomplishment Instructions of Boeing Special Attention Service
Bulletin 777-54-0027, Revision 1, dated September 12, 2013.
Conclusion
We reviewed the relevant data, considered the comments received,
and determined that air safety and the public interest require adopting
this AD with the changes described previously and minor editorial
changes. We have determined that these minor changes:
[Agr]re consistent with the intent that was proposed in
the NPRM (79 FR 46201, August 7, 2014) for correcting the unsafe
condition; and
Do not add any additional burden upon the public than was
already proposed in the NPRM (79 FR 46201, August 7, 2014).
We also determined that these changes will not increase the
economic burden on any operator or increase the scope of this AD.
Interim Action
We consider this AD interim action. The manufacturer has issued
Boeing Special Attention Service Bulletin 777-71-0055, Revision 1,
dated April 15, 2015, which describes a modification that addresses the
unsafe condition identified in this AD. This service information is an
optional action in this AD. If final action is later identified, we
might consider further rulemaking.
Related Service Information Under 1 CFR Part 51
We reviewed the following Boeing service information.
Boeing Special Attention Service Bulletin 777-54-0027,
Revision 1, dated September 12, 2013. The service information describes
procedures for doing a functional check for blockage of the forward
strut drain lines and corrective actions.
Boeing Special Attention Service Bulletin 777-71-0055,
Revision 1, dated April 15, 2015. This service information describes
procedures for replacing the forward strut drain lines and adding
insulation blankets.
Airworthiness Limitation 54-AWL-01, ``Forward Strut Drain
Line,'' Section D.4, Pratt and Whitney Forward Strut Drain Line, of the
Boeing 777 Maintenance Planning Data (MPD) Document Section 9,
Airworthiness Limitations (AWLs) and Certification Maintenance
Requirements (CMRs), D622W001-9, Revision October 2014. This service
information describes an airworthiness limitation task for the
functional check of the forward strut drain line.
This service information is reasonably available because the
interested parties have access to it through their normal course of
business or by the means identified in the ADDRESSES section of this
AD.
Costs of Compliance
We estimate that this AD affects 54 airplanes of U.S. registry.
We estimate the following costs to comply with this AD:
[[Page 52951]]
Estimated Costs: Required Actions
----------------------------------------------------------------------------------------------------------------
Cost on U.S.
Action Labor cost Parts cost Cost per product operators
----------------------------------------------------------------------------------------------------------------
Repetitive functional checks of 2 9 work-hours x $85 $0 $765 per inspection $41,310 per
struts per inspection cycle. per hour = $765 cycle. inspection cycle.
per inspection
cycle.
One-time cleaning................ 13 work-hours x $85 0 1,105.............. 59,670.
per hour = $1,105.
----------------------------------------------------------------------------------------------------------------
We estimate the following costs to do any necessary repairs or
replacements that would be required based on the results of the
inspection. We have no way of determining the number of aircraft that
might need these replacements:
On-condition Costs
----------------------------------------------------------------------------------------------------------------
Action Labor cost Parts cost Cost per product
----------------------------------------------------------------------------------------------------------------
Repair drain tube assemblies in up to Up to 5 work-hours x $85 per $0 Up to $425.
2 struts. hour = $425.
Replace drain tube assemblies in up to Up to 5 work-hours x $85 per Up to $4,484 Up to $4,909.
2 struts. hour = $425.
----------------------------------------------------------------------------------------------------------------
According to the manufacturer, some of the costs of this AD may be
covered under warranty, thereby reducing the cost impact on affected
individuals. We do not control warranty coverage for affected
individuals. As a result, we have included all costs in our cost
estimate.
Estimated Costs: Optional Actions
----------------------------------------------------------------------------------------------------------------
Cost per
Action Labor Cost Parts Cost product
----------------------------------------------------------------------------------------------------------------
Removal of drain tube assemblies........... 1 work[dash]hour x $85 per hour = $0 $85
$85.
Cleaning of drain lines.................... 6 work-hours x $85 per hour = $510. $0 $510
Installation of new drain lines and 2 work-hours x $85 per hour = $170. $17,250 $17,420
insulation blankets.
Leak check of drain lines.................. 1 work-hour x $85 per hour = $85... $0 $85
Revision of maintenance or inspection 1 work-hour x $85 per hour = $85... $0 $85
program.
----------------------------------------------------------------------------------------------------------------
Authority for This Rulemaking
Title 49 of the United States Code specifies the FAA's authority to
issue rules on aviation safety. Subtitle I, section 106, describes the
authority of the FAA Administrator. Subtitle VII: Aviation Programs,
describes in more detail the scope of the Agency's authority.
We are issuing this rulemaking under the authority described in
Subtitle VII, Part A, Subpart III, Section 44701: ``General
requirements.'' Under that section, Congress charges the FAA with
promoting safe flight of civil aircraft in air commerce by prescribing
regulations for practices, methods, and procedures the Administrator
finds necessary for safety in air commerce. This regulation is within
the scope of that authority because it addresses an unsafe condition
that is likely to exist or develop on products identified in this
rulemaking action.
Regulatory Findings
This AD will not have federalism implications under Executive Order
13132. This AD will not have a substantial direct effect on the States,
on the relationship between the national government and the States, or
on the distribution of power and responsibilities among the various
levels of government.
For the reasons discussed above, I certify that this AD:
(1) Is not a ``significant regulatory action'' under Executive
Order 12866,
(2) Is not a ``significant rule'' under DOT Regulatory Policies and
Procedures (44 FR 11034, February 26, 1979),
(3) Will not affect intrastate aviation in Alaska, and
(4) Will not have a significant economic impact, positive or
negative, on a substantial number of small entities under the criteria
of the Regulatory Flexibility Act.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.
Adoption of the Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA amends 14 CFR part 39 as follows:
PART 39--AIRWORTHINESS DIRECTIVES
0
1. The authority citation for part 39 continues to read as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701.
Sec. 39.13 [Amended]
0
2. The FAA amends Sec. 39.13 by adding the following new airworthiness
directive (AD):
2015-17-13 The Boeing Company: Amendment 39-18246 ; Docket No. FAA-
2014-0523; Directorate Identifier 2014-NM-050-AD.
(a) Effective Date
This AD is effective October 7, 2015.
(b) Affected ADs
None.
(c) Applicability
This AD applies to The Boeing Company Model 777-200 and -300 series
airplanes, certificated in any category, equipped with Pratt & Whitney
engines, as identified in Boeing Special Attention Service Bulletin
777-54-0027, Revision 1, dated September 12, 2013.
[[Page 52952]]
(d) Subject
Air Transport Association (ATA) of America Code 54, Nacelles/
pylons.
(e) Unsafe Condition
This AD was prompted by reports of blocked drain lines at the
engine forward strut that caused flammable fluid to accumulate in a
flammable leakage zone. We are proposing this AD to detect and correct
blockage of forward strut drain lines, which could cause flammable
fluids to collect in the forward strut area and potentially cause an
uncontrolled fire or cause failure of engine attachment structure and
consequent airplane loss.
(f) Compliance
Comply with this AD within the compliance times specified, unless
already done.
(g) Functional Check, Cleaning, and Corrective Actions
At the applicable times specified in paragraph 1.E.,
``Compliance,'' of Boeing Special Attention Service Bulletin 777-54-
0027, Revision 1, dated September 12, 2013, except as provided by
paragraph (h) of this AD, do the actions specified in paragraphs (g)(1)
and (g)(2) of this AD, in accordance with the Accomplishment
Instructions of Boeing Special Attention Service Bulletin 777-54-0027,
Revision 1, dated September 12, 2013. Repeat the functional check
required by paragraph (g)(1) of this AD, thereafter at the applicable
times specified in paragraph 1.E., ``Compliance,'' of Boeing Special
Attention Service Bulletin 777-54-0027, Revision 1, dated September 12,
2013, until the terminating action specified in paragraph (i) of this
AD is done.
(1) Do a functional check for blockage of the forward strut drain
line of the left and right strut and do all applicable corrective
actions (including cleaning or replacing blocked drain tubes, repairing
fluid leaks, and cleaning the inlet drain screen on the right system
disconnect assembly inlet). Do all applicable corrective actions before
further flight. Alternate tee fitting part numbers BACT16BR120612JN and
AS4139J120612 may be used during the replacement of the forward strut
drain lines, provided the installation is performed in accordance with
the Accomplishment Instructions of Boeing Special Attention Service
Bulletin 777-54-0027, Revision 1, dated September 12, 2013.
(2) Do a one-time cleaning of the smaller forward strut drain lines
connected to the left systems disconnect, the strut forward lower spar,
and the forward fire seal pan inlets.
(h) Exception to the Service Information Specifications
Where Boeing Special Attention Service Bulletin 777-54-0027,
Revision 1, dated September 12, 2013, refers to a compliance time
``after the Revision 1 date of this Service Bulletin,'' this AD
requires compliance within the specified compliance time after the
effective date of this AD.
(i) Optional Terminating Action
Accomplishment of the actions specified in paragraphs (i)(1)
through (i)(4) of this AD, for both the left and right struts, in
accordance with the Accomplishment Instructions of Boeing Special
Attention Service Bulletin 777-71-0055, Revision 1, dated April 15,
2015, and accomplishment of the revision specified in paragraph (i)(5)
of this AD, terminates the repetitive functional checks required by
paragraph (g)(1) of this AD at the modified area only.
(1) Disconnect and remove the forward strut drain lines.
(2) Clean the left systems disconnect, the strut forward lower
spar, and the forward fireseal pan drain lines.
(3) Install new forward strut drain lines and insulation blankets.
(4) Do a leak check of the forward strut drain lines, for any leak,
and repair if any leaking is found.
(5) Revise the maintenance or inspection program, as applicable, to
incorporate Airworthiness Limitation 54-AWL-01, ``Forward Strut Drain
Line'', Section D.4, Pratt and Whitney Forward Strut Drain Line, of the
Boeing 777 Maintenance Planning Data (MPD) Document Section 9,
Airworthiness Limitations (AWLs) and Certification Maintenance
Requirements (CMRs), D622W001-9, Revision October 2014. The initial
compliance time for Airworthiness Limitation 54-AWL-01 is within 2,000
flight cycles or 1,500 days, whichever occurs first, after doing the
actions specified in paragraphs (i)(1) through (i)(4) of this AD.
(j) No Alternative Actions or Intervals
After accomplishing the revision required by paragraph (i)(5) of
this AD, no alternative actions (e.g., inspections) or intervals may be
used unless the actions or intervals are approved as an alternative
method of compliance (AMOC) in accordance with the procedures specified
in paragraph (l) of this AD.
(k) Credit for Previous Actions
This paragraph provides credit for actions required by paragraph
(i) of this AD, if those actions were performed before the effective
date of this AD using Boeing Special Attention Service Bulletin 777-71-
0055, dated June 12, 2014, which is not incorporated by reference in
this AD.
(l) Alternative Methods of Compliance (AMOCs)
(1) The Manager, Seattle Aircraft Certification Office (ACO), FAA,
has the authority to approve AMOCs for this AD, if requested using the
procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send
your request to your principal inspector or local Flight Standards
District Office, as appropriate. If sending information directly to the
manager of the ACO, send it to the attention of the person identified
in paragraph (m)(1) of this AD. Information may be emailed to: 9-ANM-Seattle-ACO-AMOC-Requests@faa.gov.
(2) Before using any approved AMOC, notify your appropriate
principal inspector, or lacking a principal inspector, the manager of
the local flight standards district office/certificate holding district
office.
(3) An AMOC that provides an acceptable level of safety may be used
for any repair required by this AD if it is approved by the Boeing
Commercial Airplanes Organization Designation Authorization (ODA) that
has been authorized by the Manager, Seattle ACO, to make those
findings. For a repair method to be approved, the repair must meet the
certification basis of the airplane, and the approval must specifically
refer to this AD.
(m) Related Information
(1) For more information about this AD, contact Kevin Nguyen,
Aerospace Engineer, Propulsion Branch, ANM-140S, FAA, Seattle Aircraft
Certification Office, 1601 Lind Avenue SW., Renton, WA 98057-3356;
phone: 425-917-6501; fax: 425-917-6590; email: kevin.nguyen@faa.gov.
(2) Service information identified in this AD that is not
incorporated by reference is available at the addresses specified in
paragraphs (n)(3) and (n)(4) of this AD.
(n) Material Incorporated by Reference
(1) The Director of the Federal Register approved the incorporation
by reference (IBR) of the service information listed in this paragraph
under 5 U.S.C. 552(a) and 1 CFR part 51.
(2) You must use this service information as applicable to do the
[[Page 52953]]
actions required by this AD, unless the AD specifies otherwise.
(i) Boeing Special Attention Service Bulletin 777-54-0027, Revision
1, dated September 12, 2013.
(ii) Boeing Special Attention Service Bulletin 777-71-0055,
Revision 1, dated April 15, 2015.
(iii) Airworthiness Limitation 54-AWL-01, ``Forward Strut Drain
Line'', Section D.4, Pratt and Whitney Forward Strut Drain Line, of the
Boeing 777 Maintenance Planning Data (MPD) Document Section 9,
Airworthiness Limitations (AWLs) and Certification Maintenance
Requirements (CMRs), D622W001-9, Revision October 2014.
(3) For service information identified in this AD, contact Boeing
Commercial Airplanes, Attention: Data & Services Management, P. O. Box
3707, MC 2H-65, Seattle, WA 98124-2207; telephone 206-544-5000,
extension 1; fax 206-766-5680; Internet https://www.myboeingfleet.com.
(4) You may view this service information at FAA, Transport
Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For information
on the availability of this material at the FAA, call 425-227-1221.
(5) You may view this service information that is incorporated by
reference at the National Archives and Records Administration (NARA).
For information on the availability of this material at NARA, call 202-
741-6030, or go to: https://www.archives.gov/federal-register/cfr/ibr-locations.html.
Issued in Renton, Washington, on August 14, 2015.
Michael Kaszycki,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 2015-20696 Filed 9-1-15; 8:45 am]
BILLING CODE 4910-13-P
