Airworthiness Directives; The Boeing Company Model 777 Airplanes, 39811-39814 [2010-16201]
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Federal Register / Vol. 75, No. 133 / Tuesday, July 13, 2010 / Rules and Regulations
Alternative Methods of Compliance
(AMOCs)
(k)(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. Send information to ATTN: Louis
Natsiopoulos, Aerospace Engineer, Systems
and Equipment Branch, ANM–130S, 1601
Lind Avenue SW., Renton, Washington
98057–3356; telephone (425) 917–6478; fax
(425) 917–6590. Information may be e-mailed
to: 9-ANM-Seattle-ACO-AMOCRequests@faa.gov.
(2) To request a different method of
compliance or a different compliance time
for this AD, follow the procedures in 14 CFR
39.19. Before using any approved AMOC on
any airplane to which the AMOC applies,
notify your principal maintenance inspector
(PMI) or principal avionics inspector (PAI),
as appropriate, or lacking a principal
inspector, your local Flight Standards District
Office. The AMOC approval letter must
specifically reference this AD.
Material Incorporated by Reference
(l) You must use the applicable service
information contained in Table 3 of this AD
to do the actions required by this AD, unless
the AD specifies otherwise. If you
accomplish the optional actions specified by
this AD, you must use the applicable service
information specified in Table 3 of this AD
to perform those actions, unless the AD
specifies otherwise.
(1) The Director of the Federal Register
approved the incorporation by reference of
this service information under 5 U.S.C.
552(a) and 1 CFR part 51.
(2) For service information identified in
this AD, contact Boeing Commercial
39811
Airplanes, Attention: Data & Services
Management, P.O. Box 3707, MC 2H–65,
Seattle, Washington 98124–2207; telephone
206–544–5000, extension 1, fax 206–766–
5680; e-mail me.boecom@boeing.com;
Internet https://www.myboeingfleet.com.
(3) You may review copies of the service
information at the FAA, Transport Airplane
Directorate, 1601 Lind Avenue, SW., Renton,
Washington. For information on the
availability of this material at the FAA, call
425–227–1221.
(4) You may also review copies of the
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/
code_of_federal_regulations/
ibr_locations.html.
TABLE 3—MATERIAL INCORPORATED BY REFERENCE
Boeing Special Attention Service Bulletin—
Revision—
Dated—
757–30–0019 ..........................................................................................................
757-30-0020 ...........................................................................................................
767-30–0039 ...........................................................................................................
767–30–0041 ..........................................................................................................
777–30–0012 ..........................................................................................................
2 .............................................................
2 .............................................................
Original ..................................................
Original ..................................................
2 .............................................................
April 19, 2010.
March 31, 2010.
December 5, 2007.
December 5, 2007.
December 19, 2007.
Issued in Renton, Washington, on July 6,
2010.
Ali Bahrami,
Manager, Transport Airplane Directorate,
Aircraft Certification Service.
[FR Doc. 2010–17046 Filed 7–9–10; 4:15 pm]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2009–1249; Directorate
Identifier 2009–NM–100–AD; Amendment
39–16358; AD 2010–14–13]
RIN 2120–AA64
Airworthiness Directives; The Boeing
Company Model 777 Airplanes
jlentini on DSKJ8SOYB1PROD with RULES
AGENCY: Federal Aviation
Administration (FAA), DOT.
ACTION: Final rule.
SUMMARY: We are adopting a new
airworthiness directive (AD) for certain
Model 777 airplanes. This AD requires
inspecting the bolt, nut, and downstop
of the slat track assembly to determine
if the bolt, nut, or stops are missing and
to determine if the thread protrusion of
the bolt from the nut is within specified
limits and parts are correctly installed,
and related investigative and corrective
actions if necessary. For certain
airplanes, this AD also requires
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16:12 Jul 12, 2010
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inspecting the slat cans at the outboard
slat number 3 and 12 outboard main
track locations for holes and wear
damage, and corrective actions if
necessary; and replacing the downstop
hardware for the outboard slats number
3 and 12 outboard and inboard main
track locations. This AD results from a
report of a hole in the inboard main
track slat can for outboard slat number
12 on a Model 777 airplane. The hole
was caused when the bolt securing the
downstop migrated out of the fitting and
contacted the slat can. We are issuing
this AD to detect and correct damage to
the outboard slat main track slat cans,
which can allow fuel leakage into the
fixed wing leading edge in excess of the
capacity of the draining system. Excess
fuel leakage could result in an
uncontained fire.
DATES: This AD is effective August 17,
2010.
The Director of the Federal Register
approved the incorporation by reference
of a certain publication listed in the AD
as of August 17, 2010.
For service information
identified in this AD, contact Boeing
Commercial Airplanes, Attention: Data
& Services Management, P.O. Box 3707,
MC 2H–65, Seattle, Washington 98124–
2207; telephone 206–544–5000,
extension 1; fax 206–766–5680; e-mail
me.boecom@boeing.com; Internet
https://www.myboeingfleet.com.
ADDRESSES:
PO 00000
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Examining the AD Docket
You may examine the AD docket on
the Internet at https://
www.regulations.gov; 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 (telephone 800–647–5527)
is the Document 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:
Duong Tran, Aerospace Engineer,
Airframe Branch, ANM–120S, FAA,
Seattle Aircraft Certification Office,
1601 Lind Avenue SW., Renton,
Washington 98057–3356; telephone
(425) 917–6452; fax (425) 917–6590.
SUPPLEMENTARY INFORMATION:
Discussion
We issued a notice of proposed
rulemaking (NPRM) to amend 14 CFR
part 39 to include an airworthiness
directive (AD) that would apply to
certain Model 777 airplanes. That
NPRM was published in the Federal
Register on January 7, 2010 (75 FR 950).
That NPRM proposed to require
inspecting the bolt, nut, and downstop
of the slat track assembly to determine
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Federal Register / Vol. 75, No. 133 / Tuesday, July 13, 2010 / Rules and Regulations
if the bolt, nut, or stops are missing and
to determine if the thread protrusion of
the bolt from the nut is within specified
limits and parts are correctly installed,
and related investigative and corrective
actions if necessary. For certain
airplanes, that NPRM also proposed to
require inspecting the slat cans at the
outboard slat number 3 and 12 outboard
main track locations for holes and wear
damage, and corrective actions if
necessary; and replacing the downstop
hardware for the outboard slats number
3 and 12 outboard and inboard main
track locations.
Relevant Service Information
We have reviewed Boeing Service
Bulletin 777–57A0064, Revision 1,
dated May 6, 2010. The NPRM referred
to Boeing Alert Service Bulletin 777–
57A0064, dated March 26, 2009, as the
appropriate source of service
information. Boeing Service Bulletin
777–57A0064, Revision 1, dated May 6,
2010, clarifies procedures, deletes a
requirement, adds a note to allow a
different fastener, revises an incorrect
chamfer callout, and adds information
that was published in Boeing
Information Notice 777–57A0064 IN 01
and 777–57A0064 IN 02. Boeing Service
Bulletin 777–57A0064, Revision 1,
dated May 6, 2010, does not require
additional work.
Comments
We gave the public the opportunity to
participate in developing this AD. We
considered the comments received from
the commenters.
jlentini on DSKJ8SOYB1PROD with RULES
Support for the NPRM
Continental Airlines (Continental)
supports the intent of the NPRM.
Request To Add Exception for Group 1
Airplanes
Boeing requests that we revise the
NPRM to add a statement to paragraph
(h) of the NPRM stating, ‘‘The outboard
main track locations for slats 3 and 12
are excluded from the inspection
defined in Table 3 of Boeing Alert
Service Bulletin 777–57A0064, dated
March 26, 2009.’’ Boeing states that, for
Group 1 airplanes, the slat tracks do not
penetrate into the wing fuel tank at
these locations. Boeing also states that,
for all Group 2 airplanes, this inspection
is accomplished via Table 4 of Boeing
Alert Service Bulletin 777–57A0064,
dated March 26, 2009. Boeing Alert
Service Bulletin 777–57A0064, dated
March 26, 2009, states that for only
Group 2 airplanes the outboard main
track locations at slats 3 and 12 must be
inspected. Boeing notes that it plans to
issue a new revision to this service
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16:12 Jul 12, 2010
Jkt 220001
bulletin in June 2010 that contains this
information.
We disagree with the commenter that
such a revision is necessary. We have
updated this final rule to refer to Boeing
Service Bulletin 777–57A0064, Revision
1, dated May 6, 2010. Boeing Service
Bulletin 777–57A0064, Revision 1,
dated May 6, 2010, has corrected this
information. We have added Boeing
Service Bulletin 777–57A0064, Revision
1, dated May 6, 2010, as the appropriate
source of service information for the
actions required by this AD, including
paragraph (g)(2) of this AD (in paragraph
(g)(2) of the NPRM we referred to the
original issue of the service bulletin for
the compliance times but did not
specifically reference the service
bulletin as the applicable source of
service information for doing the
actions). We have also added paragraph
(j) to this final rule to provide credit for
actions done in accordance with Boeing
Alert Service Bulletin 777–57A0064,
dated March 26, 2009.
Request To Add Exception for Group 2
Airplanes
Boeing further requests that we revise
paragraph (h) of the NPRM to state, ‘‘For
airplanes defined as Group 2 in Boeing
Alert Service Bulletin 777–57A0064,
dated March 26, 2009, it is not
necessary to perform the torque check
on the downstop hardware for slats 3
and 12 as defined in Table 2 of Boeing
Alert Service Bulletin 777–57A0064,
dated March 26, 2009.’’ Boeing states
that at locations where a fastener is to
be replaced by subsequent instructions
in Boeing Alert Service Bulletin 777–
57A0064, dated March 26, 2009, a
torque check is redundant and is not a
technical requirement. Boeing states
that the visual inspections are still in
place to guarantee that damage caused
by a loose fastener will be caught.
Boeing also adds that Boeing Alert
Service Bulletin 777–57A0064, dated
March 26, 2009, specifies compliance
times for the fastener replacement that
are less than those for the torque check.
Boeing notes that it plans to issue a new
revision to this service bulletin in June
2010 that contains this information.
We agree with the commenter that
such a revision is necessary. We have
updated this final rule to refer to Boeing
Service Bulletin 777–57A0064, Revision
1, dated May 6, 2010. However, we have
added a new paragraph (i) to this final
rule to clarify that this measurement is
not necessary on slats 3 and 12. We
have added Boeing Service Bulletin
777–57A0064, Revision 1, dated May 6,
2010, as the primary source of service
information for accomplishing the
actions required by this AD.
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Request To Increase the Inspection
Threshold to 12 Months
Continental requests that we revise
the compliance time for the inspection
from 6 months to 12 months after the
effective date of the AD. Continental
states that the current 6-month
compliance time will not provide a
practical period in which to complete
the full inspection for its Model 777
fleet based on their maintenance
schedule. Continental states that a 12month threshold would not compromise
the safety of the airplane because there
are existing zonal inspection
requirements in the referenced
Maintenance Planning Document/
Maintenance Review Board (MPD/MRB)
tasks, discrepancies in the area of
interest could be detected through the
required routine inspections.
Continental states that with a frequency
of every 1,125 days from delivery, most
affected airplanes should have had at
least one inspection performed in
accordance with the MPD/MRB tasks.
We disagree. Due to the urgent nature
of a potential excessive fuel leakage, we
do not find it appropriate to revise the
inspection threshold. Furthermore, the
MPD/MRB zonal inspection
requirements are not intense enough to
detect certain unobvious discrepancies
(e.g., loose bolts and insufficient nut
torque). However, under the provisions
of paragraph (k) of this AD, we will
consider requests for approval of an
extension of the compliance time if
sufficient data are submitted to
substantiate that the extension would
provide an acceptable level of safety.
We have not changed the AD in regard
to this issue.
Request To Clarify Requirements of
Downstop Fitting Rework
EVA Airlines requests that we
incorporate the information from Boeing
Information Notice 777–57A0064 IN 01,
dated May 28, 2009, which states that
the chamfer for the ¥2 stop fitting in
view B–B of Appendix A of Boeing
Alert Service Bulletin 777–57A0064,
dated March 26, 2009, should be
‘‘0.820¥0.850 × 90 Degrees¥120
Degrees’’ instead of ‘‘0.820¥0.050 × 90
Degrees¥120 Degrees.’’
We agree that this information should
be incorporated into the AD. Boeing
Service Bulletin 777–57A0064, Revision
1, dated May 6, 2010, corrects this
information. As stated previously, we
have changed this AD to refer to Boeing
Service Bulletin 777–57A0064, Revision
1, dated May 6, 2010, as the primary
source of service information for
accomplishing the actions required by
this AD.
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Federal Register / Vol. 75, No. 133 / Tuesday, July 13, 2010 / Rules and Regulations
39813
on any operator or increase the scope of
the AD.
We reviewed the relevant data,
considered the comments received, and
determined that air safety and the
public interest require adopting the AD
with the changes described previously.
We also determined that these changes
will not increase the economic burden
this increase in the specified hourly
labor rate.
Explanation of Change to Costs of
Compliance
Since issuance of the NPRM, we have
increased the labor rate used in the
Costs of Compliance from $80 per workhour to $85 per work-hour. The Costs of
Compliance information, below, reflects
Conclusion
Costs of Compliance
We estimate that this AD would affect
129 airplanes of U.S. registry. The
following table provides the estimated
costs for U.S. operators to comply with
this AD.
TABLE—ESTIMATED COSTS
Action
Work hours
Average
labor rate
per hour
Cost per product
Parts
Inspection for Group 1 airplanes.
39
$85
$0
Inspection for Group 2 airplanes.
55
85
0
8
85
9,267
Replacement for Group 2 airplanes.
jlentini on DSKJ8SOYB1PROD with RULES
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), and
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16:12 Jul 12, 2010
Jkt 220001
$3,315 per inspection
cycle.
4,675 per inspection
cycle.
9,947 ...............
(3) 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.
You can find our regulatory
evaluation and the estimated costs of
compliance in the AD Docket.
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:
■
2010–14–13 The Boeing Company:
Amendment 39–16358. Docket No.
FAA–2009–1249; Directorate Identifier
2009–NM–100–AD.
Effective Date
(a) This airworthiness directive (AD) is
effective August 17, 2010.
Affected Ads
PO 00000
(b) None.
Frm 00027
Fmt 4700
Number of
U.S.registered
airplanes
Sfmt 4700
127
Fleet cost
$421,005 per inspection cycle.
2
9,350 per inspection cycle.
2
19,894.
Applicability
(c) This AD applies to The Boeing
Company Model 777–200, -200LR, -300, and
-300ER airplanes, certificated in any
category; as identified in Boeing Service
Bulletin 777–57A0064, Revision 1, dated
May 6, 2010.
Subject
(d) Air Transport Association (ATA) of
America Code 57: Wings.
Unsafe Condition
(e) This AD results from a report of a hole
in the inboard main track slat can for
outboard slat number 12 on a Model 777
airplane. The Federal Aviation
Administration is issuing this AD to detect
and correct damage to the outboard slat main
track slat cans, which can allow fuel leakage
into the fixed wing leading edge in excess of
the capacity of the draining system. Excess
fuel leakage could result in an uncontained
fire.
Compliance
(f) You are responsible for having the
actions required by this AD performed within
the compliance times specified, unless the
actions have already been done.
Inspect the Slat Main Track Stop Hardware
and Measure the Torque of the Slat Main
Track Stop Hardware
(g) At the applicable time specified in
paragraph 1.E., ‘‘Compliance,’’ of Boeing
Service Bulletin 777–57A0064, Revision 1,
dated May 6, 2010, except as required by
paragraph (h) of this AD: Do the applicable
actions specified in paragraphs (g)(1) and
(g)(2) of this AD.
(1) For all airplanes: Do a detailed
inspection of the slat main track stop
hardware to determine if the bolt, nut, or
stops are missing and to determine if the
thread protrusion of the bolt from the nut is
within specified limits, and do all applicable
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Federal Register / Vol. 75, No. 133 / Tuesday, July 13, 2010 / Rules and Regulations
related investigative and corrective actions,
in accordance with the Accomplishment
Instructions of Boeing Service Bulletin 777–
57A0064, Revision 1, dated May 6, 2010,
except as required by paragraph (i) of this
AD. Do all applicable related investigative
and corrective actions at the applicable time
specified in paragraph 1.E., ‘‘Compliance,’’ of
Boeing Service Bulletin 777–57A0064,
Revision 1, dated May 6, 2010, except as
required by paragraph (h) of this AD.
(2) For airplanes identified as Group 2
airplanes in Boeing Service Bulletin 777–
57A0064, Revision 1, dated May 6, 2010: Do
a detailed inspection of the slat cans at the
outboard slat number 3 and 12 outboard
main track locations for holes and wear
damage and do all applicable corrective
actions, and replace the downstop hardware
for the outboard slats number 3 and 12
outboard and inboard main track locations,
in accordance with the Accomplishment
Instructions of Boeing Service Bulletin 777–
57A0064, Revision 1, dated May 6, 2010. Do
all applicable corrective actions at the
applicable time specified in paragraph 1.E.,
‘‘Compliance,’’ of Boeing Service Bulletin
777–57A0064, Revision 1, dated May 6, 2010.
Exception to the Service Bulletin
(h) Where Boeing Service Bulletin 777–
57A0064, Revision 1, dated May 6, 2010,
specifies a compliance time after the date on
the service bulletin, this AD requires
compliance within the specified compliance
time after the effective date of this AD.
(i) Where Boeing Service Bulletin 777–
57A0064, Revision 1, dated May 6, 2010,
specifies measuring torque of the nuts of the
slat main track stop hardware of slats 3 and
12, this AD does not require that action for
Group 2 airplanes.
jlentini on DSKJ8SOYB1PROD with RULES
Credit for Actions Accomplished Previously
(j) Actions accomplished before the
effective date of this AD according to Boeing
Alert Service Bulletin 777–57A0064, dated
March 26, 2009, are considered acceptable
for compliance with the corresponding
actions specified in this AD.
Alternative Methods of Compliance
(AMOCs)
(k)(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. Send information to ATTN:
Duong Tran, Aerospace Engineer, Airframe
Branch, ANM–120S, FAA, Seattle Aircraft
Certification Office, 1601 Lind Avenue, SW.,
Renton, Washington 98057–3356; telephone
(425) 917–6452; fax (425) 917–6590. Or, email information to 9-ANM-Seattle-ACOAMOC-Requests@faa.gov.
(2) To request a different method of
compliance or a different compliance time
for this AD, follow the procedures in 14 CFR
39.19. Before using any approved AMOC on
any airplane to which the AMOC applies,
notify your principal maintenance inspector
(PMI) or principal avionics inspector (PAI),
as appropriate, or lacking a principal
inspector, your local Flight Standards District
Office. The AMOC approval letter must
specifically reference this AD.
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16:12 Jul 12, 2010
Jkt 220001
(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.
Material Incorporated by Reference
(l) You must use Boeing Service Bulletin
777–57A0064, Revision 1, dated May 6, 2010,
to do the actions required by this AD, unless
the AD specifies otherwise.
(1) The Director of the Federal Register
approved the incorporation by reference of
this service information under 5 U.S.C.
552(a) and 1 CFR part 51.
(2) For service information identified in
this AD, contact Boeing Commercial
Airplanes, Attention: Data & Services
Management, P.O. Box 3707, MC 2H–65,
Seattle, Washington 98124–2207; telephone
206–544–5000, extension 1; fax 206–766–
5680; e-mail me.boecom@boeing.com;
Internet https://www.myboeingfleet.com.
(3) You may review copies of the service
information at the FAA, Transport Airplane
Directorate, 1601 Lind Avenue, SW., Renton,
Washington. For information on the
availability of this material at the FAA, call
425–227–1221.
(4) You may also review copies of the
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/
code_of_federal_regulations/
ibr_locations.html.
Issued in Renton, Washington on June 21,
2010.
Ali Bahrami,
Manager, Transport Airplane Directorate,
Aircraft Certification Service.
[FR Doc. 2010–16201 Filed 7–12–10; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2009–1215; Directorate
Identifier 2009–NM–126–AD; Amendment
39–16364; AD 2010–14–19]
RIN 2120–AA64
Airworthiness Directives; Airbus Model
A330–200 and –300, and Model A340–
200, –300, –500 and –600 Series
Airplanes
AGENCY: Federal Aviation
Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule.
PO 00000
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SUMMARY: We are adopting a new
airworthiness directive (AD) for the
products listed above. This AD results
from mandatory continuing
airworthiness information (MCAI)
originated by an aviation authority of
another country to identify and correct
an unsafe condition on an aviation
product. The MCAI describes the unsafe
condition as:
* * * [P]artial blockage of the water
absorbing filter element P/N (part number)
QA06123 was observed several times. The
blockage was created by carbon debris from
the cartridge and from the burst disc of the
Halon bottle.
This water absorbing filter element is part
of Halon Dual-Filter Assembly installed also
in the Flow Metering System (FMS) of the
cargo compartment Fire Extinguishing
System used in the A330 and A340
aeroplanes.
Blockage of the water absorbing filter
element could lead to reduction of Halon
outflow, leading to incapacity to maintain
fire extinguishing agent concentration.
Combined with fire, this could result in an
uncontrolled fire in the affected
compartment, which would constitute an
unsafe condition.
*
*
*
*
*
We are issuing this AD to require
actions to correct the unsafe condition
on these products.
DATES: This AD becomes effective
August 17, 2010.
The Director of the Federal Register
approved the incorporation by reference
of certain publications listed in this AD
as of August 17, 2010.
ADDRESSES: You may examine the AD
docket on the Internet at https://
www.regulations.gov or in person at the
U.S. Department of Transportation,
Docket Operations, M–30, West
Building Ground Floor, Room W12–140,
1200 New Jersey Avenue, SE.,
Washington, DC.
FOR FURTHER INFORMATION CONTACT:
Vladimir Ulyanov, Aerospace Engineer,
International Branch, ANM–116,
Transport Airplane Directorate, FAA,
1601 Lind Avenue, SW., Renton,
Washington 98057–3356; telephone
(425) 227–1138; fax (425) 227–1149.
SUPPLEMENTARY INFORMATION:
Discussion
We issued a notice of proposed
rulemaking (NPRM) to amend 14 CFR
part 39 to include an AD that would
apply to the specified products. That
NPRM was published in the Federal
Register on December 29, 2009 (74 FR
68737). That NPRM proposed to correct
an unsafe condition for the specified
products. The MCAI states:
During the qualification test campaign at
the supplier site of the prototype Flow
E:\FR\FM\13JYR1.SGM
13JYR1
]]>Agencies
[Federal Register Volume 75, Number 133 (Tuesday, July 13, 2010)]
[Rules and Regulations]
[Pages 39811-39814]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2010-16201]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2009-1249; Directorate Identifier 2009-NM-100-AD;
Amendment 39-16358; AD 2010-14-13]
RIN 2120-AA64
Airworthiness Directives; The Boeing Company Model 777 Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
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SUMMARY: We are adopting a new airworthiness directive (AD) for certain
Model 777 airplanes. This AD requires inspecting the bolt, nut, and
downstop of the slat track assembly to determine if the bolt, nut, or
stops are missing and to determine if the thread protrusion of the bolt
from the nut is within specified limits and parts are correctly
installed, and related investigative and corrective actions if
necessary. For certain airplanes, this AD also requires inspecting the
slat cans at the outboard slat number 3 and 12 outboard main track
locations for holes and wear damage, and corrective actions if
necessary; and replacing the downstop hardware for the outboard slats
number 3 and 12 outboard and inboard main track locations. This AD
results from a report of a hole in the inboard main track slat can for
outboard slat number 12 on a Model 777 airplane. The hole was caused
when the bolt securing the downstop migrated out of the fitting and
contacted the slat can. We are issuing this AD to detect and correct
damage to the outboard slat main track slat cans, which can allow fuel
leakage into the fixed wing leading edge in excess of the capacity of
the draining system. Excess fuel leakage could result in an uncontained
fire.
DATES: This AD is effective August 17, 2010.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in the AD as of August 17,
2010.
ADDRESSES: For service information identified in this AD, contact
Boeing Commercial Airplanes, Attention: Data & Services Management,
P.O. Box 3707, MC 2H-65, Seattle, Washington 98124-2207; telephone 206-
544-5000, extension 1; fax 206-766-5680; e-mail me.boecom@boeing.com;
Internet https://www.myboeingfleet.com.
Examining the AD Docket
You may examine the AD docket on the Internet at https://www.regulations.gov; 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 (telephone 800-647-5527) is the Document 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: Duong Tran, Aerospace Engineer,
Airframe Branch, ANM-120S, FAA, Seattle Aircraft Certification Office,
1601 Lind Avenue SW., Renton, Washington 98057-3356; telephone (425)
917-6452; fax (425) 917-6590.
SUPPLEMENTARY INFORMATION:
Discussion
We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR
part 39 to include an airworthiness directive (AD) that would apply to
certain Model 777 airplanes. That NPRM was published in the Federal
Register on January 7, 2010 (75 FR 950). That NPRM proposed to require
inspecting the bolt, nut, and downstop of the slat track assembly to
determine
[[Page 39812]]
if the bolt, nut, or stops are missing and to determine if the thread
protrusion of the bolt from the nut is within specified limits and
parts are correctly installed, and related investigative and corrective
actions if necessary. For certain airplanes, that NPRM also proposed to
require inspecting the slat cans at the outboard slat number 3 and 12
outboard main track locations for holes and wear damage, and corrective
actions if necessary; and replacing the downstop hardware for the
outboard slats number 3 and 12 outboard and inboard main track
locations.
Relevant Service Information
We have reviewed Boeing Service Bulletin 777-57A0064, Revision 1,
dated May 6, 2010. The NPRM referred to Boeing Alert Service Bulletin
777-57A0064, dated March 26, 2009, as the appropriate source of service
information. Boeing Service Bulletin 777-57A0064, Revision 1, dated May
6, 2010, clarifies procedures, deletes a requirement, adds a note to
allow a different fastener, revises an incorrect chamfer callout, and
adds information that was published in Boeing Information Notice 777-
57A0064 IN 01 and 777-57A0064 IN 02. Boeing Service Bulletin 777-
57A0064, Revision 1, dated May 6, 2010, does not require additional
work.
Comments
We gave the public the opportunity to participate in developing
this AD. We considered the comments received from the commenters.
Support for the NPRM
Continental Airlines (Continental) supports the intent of the NPRM.
Request To Add Exception for Group 1 Airplanes
Boeing requests that we revise the NPRM to add a statement to
paragraph (h) of the NPRM stating, ``The outboard main track locations
for slats 3 and 12 are excluded from the inspection defined in Table 3
of Boeing Alert Service Bulletin 777-57A0064, dated March 26, 2009.''
Boeing states that, for Group 1 airplanes, the slat tracks do not
penetrate into the wing fuel tank at these locations. Boeing also
states that, for all Group 2 airplanes, this inspection is accomplished
via Table 4 of Boeing Alert Service Bulletin 777-57A0064, dated March
26, 2009. Boeing Alert Service Bulletin 777-57A0064, dated March 26,
2009, states that for only Group 2 airplanes the outboard main track
locations at slats 3 and 12 must be inspected. Boeing notes that it
plans to issue a new revision to this service bulletin in June 2010
that contains this information.
We disagree with the commenter that such a revision is necessary.
We have updated this final rule to refer to Boeing Service Bulletin
777-57A0064, Revision 1, dated May 6, 2010. Boeing Service Bulletin
777-57A0064, Revision 1, dated May 6, 2010, has corrected this
information. We have added Boeing Service Bulletin 777-57A0064,
Revision 1, dated May 6, 2010, as the appropriate source of service
information for the actions required by this AD, including paragraph
(g)(2) of this AD (in paragraph (g)(2) of the NPRM we referred to the
original issue of the service bulletin for the compliance times but did
not specifically reference the service bulletin as the applicable
source of service information for doing the actions). We have also
added paragraph (j) to this final rule to provide credit for actions
done in accordance with Boeing Alert Service Bulletin 777-57A0064,
dated March 26, 2009.
Request To Add Exception for Group 2 Airplanes
Boeing further requests that we revise paragraph (h) of the NPRM to
state, ``For airplanes defined as Group 2 in Boeing Alert Service
Bulletin 777-57A0064, dated March 26, 2009, it is not necessary to
perform the torque check on the downstop hardware for slats 3 and 12 as
defined in Table 2 of Boeing Alert Service Bulletin 777-57A0064, dated
March 26, 2009.'' Boeing states that at locations where a fastener is
to be replaced by subsequent instructions in Boeing Alert Service
Bulletin 777-57A0064, dated March 26, 2009, a torque check is redundant
and is not a technical requirement. Boeing states that the visual
inspections are still in place to guarantee that damage caused by a
loose fastener will be caught. Boeing also adds that Boeing Alert
Service Bulletin 777-57A0064, dated March 26, 2009, specifies
compliance times for the fastener replacement that are less than those
for the torque check. Boeing notes that it plans to issue a new
revision to this service bulletin in June 2010 that contains this
information.
We agree with the commenter that such a revision is necessary. We
have updated this final rule to refer to Boeing Service Bulletin 777-
57A0064, Revision 1, dated May 6, 2010. However, we have added a new
paragraph (i) to this final rule to clarify that this measurement is
not necessary on slats 3 and 12. We have added Boeing Service Bulletin
777-57A0064, Revision 1, dated May 6, 2010, as the primary source of
service information for accomplishing the actions required by this AD.
Request To Increase the Inspection Threshold to 12 Months
Continental requests that we revise the compliance time for the
inspection from 6 months to 12 months after the effective date of the
AD. Continental states that the current 6-month compliance time will
not provide a practical period in which to complete the full inspection
for its Model 777 fleet based on their maintenance schedule.
Continental states that a 12-month threshold would not compromise the
safety of the airplane because there are existing zonal inspection
requirements in the referenced Maintenance Planning Document/
Maintenance Review Board (MPD/MRB) tasks, discrepancies in the area of
interest could be detected through the required routine inspections.
Continental states that with a frequency of every 1,125 days from
delivery, most affected airplanes should have had at least one
inspection performed in accordance with the MPD/MRB tasks.
We disagree. Due to the urgent nature of a potential excessive fuel
leakage, we do not find it appropriate to revise the inspection
threshold. Furthermore, the MPD/MRB zonal inspection requirements are
not intense enough to detect certain unobvious discrepancies (e.g.,
loose bolts and insufficient nut torque). However, under the provisions
of paragraph (k) of this AD, we will consider requests for approval of
an extension of the compliance time if sufficient data are submitted to
substantiate that the extension would provide an acceptable level of
safety. We have not changed the AD in regard to this issue.
Request To Clarify Requirements of Downstop Fitting Rework
EVA Airlines requests that we incorporate the information from
Boeing Information Notice 777-57A0064 IN 01, dated May 28, 2009, which
states that the chamfer for the -2 stop fitting in view B-B of Appendix
A of Boeing Alert Service Bulletin 777-57A0064, dated March 26, 2009,
should be ``0.820-0.850 x 90 Degrees-120 Degrees'' instead of ``0.820-
0.050 x 90 Degrees-120 Degrees.''
We agree that this information should be incorporated into the AD.
Boeing Service Bulletin 777-57A0064, Revision 1, dated May 6, 2010,
corrects this information. As stated previously, we have changed this
AD to refer to Boeing Service Bulletin 777-57A0064, Revision 1, dated
May 6, 2010, as the primary source of service information for
accomplishing the actions required by this AD.
[[Page 39813]]
Conclusion
We reviewed the relevant data, considered the comments received,
and determined that air safety and the public interest require adopting
the AD with the changes described previously. We also determined that
these changes will not increase the economic burden on any operator or
increase the scope of the AD.
Explanation of Change to Costs of Compliance
Since issuance of the NPRM, we have increased the labor rate used
in the Costs of Compliance from $80 per work-hour to $85 per work-hour.
The Costs of Compliance information, below, reflects this increase in
the specified hourly labor rate.
Costs of Compliance
We estimate that this AD would affect 129 airplanes of U.S.
registry. The following table provides the estimated costs for U.S.
operators to comply with this AD.
Table--Estimated Costs
--------------------------------------------------------------------------------------------------------------------------------------------------------
Number of
Average U.S.-
Action Work hours labor rate Parts Cost per product registered Fleet cost
per hour airplanes
--------------------------------------------------------------------------------------------------------------------------------------------------------
Inspection for Group 1 airplanes. 39 $85 $0 $3,315 per 127 $421,005 per inspection cycle.
inspection cycle.
Inspection for Group 2 airplanes. 55 85 0 4,675 per 2 9,350 per inspection cycle.
inspection cycle.
Replacement for Group 2 airplanes 8 85 9,267 9,947.............. 2 19,894.
--------------------------------------------------------------------------------------------------------------------------------------------------------
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), and
(3) 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.
You can find our regulatory evaluation and the estimated costs of
compliance in the AD Docket.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.
Adoption of the Amendment
0
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 AD:
2010-14-13 The Boeing Company: Amendment 39-16358. Docket No. FAA-
2009-1249; Directorate Identifier 2009-NM-100-AD.
Effective Date
(a) This airworthiness directive (AD) is effective August 17,
2010.
Affected Ads
(b) None.
Applicability
(c) This AD applies to The Boeing Company Model 777-200, -200LR,
-300, and -300ER airplanes, certificated in any category; as
identified in Boeing Service Bulletin 777-57A0064, Revision 1, dated
May 6, 2010.
Subject
(d) Air Transport Association (ATA) of America Code 57: Wings.
Unsafe Condition
(e) This AD results from a report of a hole in the inboard main
track slat can for outboard slat number 12 on a Model 777 airplane.
The Federal Aviation Administration is issuing this AD to detect and
correct damage to the outboard slat main track slat cans, which can
allow fuel leakage into the fixed wing leading edge in excess of the
capacity of the draining system. Excess fuel leakage could result in
an uncontained fire.
Compliance
(f) You are responsible for having the actions required by this
AD performed within the compliance times specified, unless the
actions have already been done.
Inspect the Slat Main Track Stop Hardware and Measure the Torque of the
Slat Main Track Stop Hardware
(g) At the applicable time specified in paragraph 1.E.,
``Compliance,'' of Boeing Service Bulletin 777-57A0064, Revision 1,
dated May 6, 2010, except as required by paragraph (h) of this AD:
Do the applicable actions specified in paragraphs (g)(1) and (g)(2)
of this AD.
(1) For all airplanes: Do a detailed inspection of the slat main
track stop hardware to determine if the bolt, nut, or stops are
missing and to determine if the thread protrusion of the bolt from
the nut is within specified limits, and do all applicable
[[Page 39814]]
related investigative and corrective actions, in accordance with the
Accomplishment Instructions of Boeing Service Bulletin 777-57A0064,
Revision 1, dated May 6, 2010, except as required by paragraph (i)
of this AD. Do all applicable related investigative and corrective
actions at the applicable time specified in paragraph 1.E.,
``Compliance,'' of Boeing Service Bulletin 777-57A0064, Revision 1,
dated May 6, 2010, except as required by paragraph (h) of this AD.
(2) For airplanes identified as Group 2 airplanes in Boeing
Service Bulletin 777-57A0064, Revision 1, dated May 6, 2010: Do a
detailed inspection of the slat cans at the outboard slat number 3
and 12 outboard main track locations for holes and wear damage and
do all applicable corrective actions, and replace the downstop
hardware for the outboard slats number 3 and 12 outboard and inboard
main track locations, in accordance with the Accomplishment
Instructions of Boeing Service Bulletin 777-57A0064, Revision 1,
dated May 6, 2010. Do all applicable corrective actions at the
applicable time specified in paragraph 1.E., ``Compliance,'' of
Boeing Service Bulletin 777-57A0064, Revision 1, dated May 6, 2010.
Exception to the Service Bulletin
(h) Where Boeing Service Bulletin 777-57A0064, Revision 1, dated
May 6, 2010, specifies a compliance time after the date on the
service bulletin, this AD requires compliance within the specified
compliance time after the effective date of this AD.
(i) Where Boeing Service Bulletin 777-57A0064, Revision 1, dated
May 6, 2010, specifies measuring torque of the nuts of the slat main
track stop hardware of slats 3 and 12, this AD does not require that
action for Group 2 airplanes.
Credit for Actions Accomplished Previously
(j) Actions accomplished before the effective date of this AD
according to Boeing Alert Service Bulletin 777-57A0064, dated March
26, 2009, are considered acceptable for compliance with the
corresponding actions specified in this AD.
Alternative Methods of Compliance (AMOCs)
(k)(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. Send information to
ATTN: Duong Tran, Aerospace Engineer, Airframe Branch, ANM-120S,
FAA, Seattle Aircraft Certification Office, 1601 Lind Avenue, SW.,
Renton, Washington 98057-3356; telephone (425) 917-6452; fax (425)
917-6590. Or, e-mail information to 9-ANM-Seattle-ACO-AMOC-Requests@faa.gov.
(2) To request a different method of compliance or a different
compliance time for this AD, follow the procedures in 14 CFR 39.19.
Before using any approved AMOC on any airplane to which the AMOC
applies, notify your principal maintenance inspector (PMI) or
principal avionics inspector (PAI), as appropriate, or lacking a
principal inspector, your local Flight Standards District Office.
The AMOC approval letter must specifically reference this AD.
(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.
Material Incorporated by Reference
(l) You must use Boeing Service Bulletin 777-57A0064, Revision
1, dated May 6, 2010, to do the actions required by this AD, unless
the AD specifies otherwise.
(1) The Director of the Federal Register approved the
incorporation by reference of this service information under 5
U.S.C. 552(a) and 1 CFR part 51.
(2) For service information identified in this AD, contact
Boeing Commercial Airplanes, Attention: Data & Services Management,
P.O. Box 3707, MC 2H-65, Seattle, Washington 98124-2207; telephone
206-544-5000, extension 1; fax 206-766-5680; e-mail
me.boecom@boeing.com; Internet https://www.myboeingfleet.com.
(3) You may review copies of the service information at the FAA,
Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton,
Washington. For information on the availability of this material at
the FAA, call 425-227-1221.
(4) You may also review copies of the 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/code_of_federal_regulations/ibr_locations.html.
Issued in Renton, Washington on June 21, 2010.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 2010-16201 Filed 7-12-10; 8:45 am]
BILLING CODE 4910-13-P
