Airworthiness Directives; The Boeing Company Model 737-300, -400, -500, -600, -700, and -800 Series Airplanes, 47194-47197 [2010-18624]
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47194
Federal Register / Vol. 75, No. 150 / Thursday, August 5, 2010 / Rules and Regulations
(954) 359–3826; e-mail
structure@embraer.com.br; at the applicable
time specified in paragraph (f)(3)(i) or
(f)(3)(ii) of this AD. The report must include
the inspection results, a description of any
discrepancies found, the airplane serial
number, and the number of landings and
flight hours on the airplane.
(i) If the inspection was done on or after
the effective date of this AD: Submit the
report within 30 days after the inspection.
(ii) If the inspection was accomplished
prior to the effective date of this AD: Submit
the report within 30 days after the effective
date of this AD.
FAA AD Differences
wwoods2 on DSK1DXX6B1PROD with RULES_PART 1
Note 1: This AD differs from the MCAI
and/or service information as follows:
(1) Although Brazilian Airworthiness
Directive 2008–10–02, effective October 21,
2008, does not include a reporting
requirement, the service bulletins identified
in paragraph (f)(1) of this AD do specify
reporting findings to EMBRAER. This AD
requires that operators report the results of
the inspections to EMBRAER because the
required inspection report will help
determine the extent of the corrosion in the
affected fleet, from which we will determine
if further corrective action is warranted. This
difference has been coordinated with
ˆ
Agencia Nacional de Aviacao Civil (ANAC).
¸˜
(2) Brazilian Airworthiness Directive 2008–
10–02, effective October 21, 2008, allows
replacement of the affected APU mounting
rods by ‘‘new ones bearing a new P/N [part
number] approved by ANAC.’’ However,
paragraph (f)(1)(ii) of this AD requires
replacing the affected mounting rod only
with a new mounting rod having the same
part number. Operators may request approval
of an alternative method of compliance in
order to install a new part number in
accordance with the procedures specified in
paragraph (g)(1) of this AD. This difference
has been coordinated with ANAC.
Other FAA AD Provisions
(g) The following provisions also apply to
this AD:
(1) Alternative Methods of Compliance
(AMOCs): The Manager, International
Branch, ANM–116, Transport Airplane
Directorate, 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: Todd Thompson,
Aerospace Engineer, International Branch,
ANM–116, Transport Airplane Directorate,
FAA, 1601 Lind Avenue SW., Renton,
Washington 98057–3356; telephone (425)
227–1175; fax (425) 227–1149. 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.
(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
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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.
(3) Reporting Requirements: For any
reporting requirement in this AD, under the
provisions of the Paperwork Reduction Act
(44 U.S.C. 3501 et seq.), the Office of
Management and Budget (OMB) has
approved the information collection
requirements and has assigned OMB Control
Number 2120–0056.
(4) Special Flight Permits: Special flight
permits may be issued in accordance with
sections 21.197 and 21.199 of the Federal
Aviation Regulations (14 CFR 21.197 and
21.199) to operate the airplane to a location
where the airplane can be modified (if the
operator elects to do so), except if two or
more center mounting rods or rod ends are
heavily corroded or broken, a special flight
permit is not permitted.
Related Information
(h) Refer to MCAI Brazilian Airworthiness
Directive 2008–10–02, effective October 21,
2008; EMBRAER Service Bulletin 145–49–
0034, Revision 01, dated September 8, 2008;
and EMBRAER Service Bulletin 145LEG–49–
0008, Revision 02, dated September 8, 2008;
for related information.
Material Incorporated by Reference
(i) You must use EMBRAER Service
Bulletin 145–49–0034, Revision 01, dated
September 8, 2008; or EMBRAER Service
Bulletin 145LEG–49–0008, Revision 02,
dated September 8, 2008; as applicable; 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 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; e-mail: distrib@embraer.com.br;
Internet: https://www.flyembraer.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 July 16,
2010.
Ali Bahrami,
Manager, Transport Airplane Directorate,
Aircraft Certification Service.
[FR Doc. 2010–18398 Filed 8–4–10; 8:45 am]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2010–0046; Directorate
Identifier 2009–NM–086–AD; Amendment
39–16383; AD 2010–16–06]
RIN 2120–AA64
Airworthiness Directives; The Boeing
Company Model 737–300, –400, –500,
–600, –700, and –800 Series Airplanes
Federal Aviation
Administration (FAA), DOT.
ACTION: Final rule.
AGENCY:
We are adopting a new
airworthiness directive (AD) for certain
Model 737–300, –400, –500, –600, –700,
and –800 series airplanes. This AD
requires inspecting to verify the part
number of the low-pressure flex-hoses
of the crew oxygen system installed
under the oxygen mask stowage boxes
located within the flight deck, and
replacing the flex-hose with a new nonconductive low-pressure flex-hose if
necessary. This AD results from reports
of low-pressure flex-hoses of the crew
oxygen system that burned through due
to inadvertent electrical current from a
short circuit in the audio select panel.
We are issuing this AD to prevent
inadvertent electrical current, which
can cause the low-pressure flex-hoses of
the crew oxygen system to melt or burn,
causing oxygen system leakage and
smoke or fire.
DATES: This AD is effective September 9,
2010.
The Director of the Federal Register
approved the incorporation by reference
of certain publications listed in the AD
as of September 9, 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.
SUMMARY:
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,
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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:
Susan L. Monroe, Aerospace Engineer,
Cabin Safety and Environmental
Systems Branch, ANM–150S, FAA,
Seattle Aircraft Certification Office,
1601 Lind Avenue, SW., Renton,
Washington 98057–3356; telephone
(425) 917–6457; 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 737–300, –400, –500,
–600, –700, and –800 series airplanes.
That NPRM was published in the
Federal Register on January 22, 2010
(75 FR 3662). That NPRM proposed to
require inspecting to verify the part
number of the low-pressure flex-hoses
of the crew oxygen system installed
under the oxygen mask stowage boxes
located within the flight deck, and
replacing the flex-hose with a new nonconductive low-pressure flex-hose if
necessary.
Comments
We gave the public the opportunity to
participate in developing this AD. We
considered the comments received.
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Support of NPRM
Boeing concurs with the contents of
the NPRM.
Request for Clarification of Cup-Type
Oxygen Mask Applicability
All Nippon Airways requests that the
FAA clarify the NPRM by including a
note stating that the cup-type oxygen
mask at the observer seat position is not
included in the applicability statement
of the NPRM, as stated in a note in the
Accomplishment Instructions of Boeing
Service Bulletin 737–35A1053, Revision
1, dated June 1, 2000.
We agree that clarification is
necessary. Boeing Service Bulletin 737–
35A1053, Revision 1, dated June 1,
2000, provides information that
describes the applicable parts and
equipment. ADs do not identify parts
and equipment that are not applicable;
therefore, the cup-type oxygen mask is
not included in the applicability
statement. No change has been made to
the AD in this regard.
Request To Extend Compliance Time
The Air Transport Association on
behalf of its member American Airlines,
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requests that the 36-month compliance
time be extended to 72 months to allow
accomplishment during heavy
maintenance. American Airlines states
that this extended compliance time
would be consistent with the apparent
urgency being placed on this inspection
by the FAA, which has waited over ten
years since the original release of the
service bulletin to issue the NPRM.
American Airlines also states that the
compliance urgency should also take
into account that the proposed AD
results from reports of hoses that burned
through on a Model 757 airplane due to
electrical current from a short circuit in
the audio selector panel with no
mention of reports of burned-through
hoses on properly maintained Model
737 airplanes.
We do not agree. American Airlines
provides no technical justification for
extending the compliance time. In
developing an appropriate compliance
time, we considered the safety
implications, parts availability, and
normal maintenance schedules for
timely accomplishment of the required
actions. Further, we arrived at the
compliance time with manufacturer
concurrence. In consideration of all of
these factors, we determined that the
compliance time, as proposed,
represents an appropriate interval in
which the inspections can be done in a
timely manner within the fleet, while
still maintaining an adequate level of
safety. If additional data are presented
that would justify a longer compliance
time, we may consider further
rulemaking on this issue. No change has
been made to the AD in this regard.
Request for Clarification of Conductive
Oxygen Hose Part Numbers
The Air Transport Association on
behalf of its member American Airlines,
requests clarification regarding the
conductive oxygen hose part numbers in
Table 1 of the NPRM and the applicable
airplane models. American Airlines
states that the NPRM requires
inspections for five conductive hose
part numbers regardless of model
applicability, and does not differentiate
between part numbers that are
applicable to Model 737–300, –400, and
–500 series airplanes, and those
applicable to Models 737–600, –700,
and –800 series airplanes. American
Airlines states that if an operator who
flies only Model 737–800 series
airplanes has accomplished Boeing
Service Bulletin 737–35A1058, Revision
1, dated June 1, 2000, for Model 737–
800 airplanes prior to the effective date
of the NPRM, the operator would now
be required to perform another
inspection to look for the part numbers
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47195
in Boeing Service Bulletin 737–
35A1053, Revision 1, dated June 1,
2000, which does not apply to Model
737–800 airplanes. American Airlines
asserts that this places undue burden
and expense on the operator.
We agree that clarification is needed
regarding the conductive hose part
numbers. We have changed Table 1 of
this final rule to identify part numbers
for only Model 737–300, –400, and –500
series airplanes. Table 2 has been added
to this final rule to identify part
numbers for Model 737–600, –700, and
–800 series airplanes.
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 workhour 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 will affect
851 airplanes of U.S. registry. We also
estimate that it will take 1 work-hour
per product to comply with this AD.
The average labor rate is $85 per workhour. Based on these figures, we
estimate the cost of this AD to the U.S.
operators to be $72,335, or $85 per
product.
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
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Federal Register / Vol. 75, No. 150 / Thursday, August 5, 2010 / Rules and Regulations
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.
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:
■
2010–16–06 The Boeing Company:
Amendment 39–16383. Docket No.
FAA–2010–0046; Directorate Identifier
2009–NM–086–AD.
Effective Date
(a) This airworthiness directive (AD) is
effective September 9, 2010.
Affected ADs
(b) None.
Applicability
(c) This AD applies to the airplanes
identified in paragraphs (c)(1) and (c)(2) of
this AD, certificated in any category.
(1) The Boeing Company Model 737–300,
–400, and –500 series airplanes, as identified
in Boeing Service Bulletin 737–35A1053,
Revision 1, dated June 1, 2000.
(2) The Boeing Company Model 737–600,
–700, and –800 series airplanes, as identified
in Boeing Service Bulletin 737–35A1058,
Revision 1, dated June 1, 2000.
Adoption of the Amendment
Subject
(d) Air Transport Association (ATA) of
America Code 35: Oxygen.
Accordingly, under the authority
delegated to me by the Administrator,
the FAA amends 14 CFR part 39 as
follows:
Unsafe Condition
(e) This AD results from reports of lowpressure flex-hoses of the crew oxygen
system that burned through due to
■
inadvertent electrical current from a short
circuit in the audio select panel. The Federal
Aviation Administration is issuing this AD to
prevent inadvertent electrical current, which
can cause the low-pressure flex-hoses of the
crew oxygen system to melt or burn, resulting
in oxygen system leakage and smoke or 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.
Inspection and Replacement
(g) Within 36 months after the effective
date of this AD, do an inspection to
determine whether any low-pressure flexhose of the crew oxygen system installed
under the oxygen mask stowage box in the
flight deck has a part number identified in
Table 1 or Table 2 of this AD, as applicable.
A review of airplane maintenance records is
acceptable in lieu of this inspection if the
part number of the low-pressure flex-hoses of
the crew oxygen system can be conclusively
determined from that review.
(1) For any hose having a part number
identified in Table 1 or Table 2 of this AD,
as applicable, before further flight, replace
the hose with a new or serviceable part, in
accordance with the Accomplishment
Instructions of Boeing Service Bulletin 737–
35A1053, Revision 1, dated June 1, 2000; or
Boeing Service Bulletin 737–35A1058,
Revision 1, dated June 1, 2000; as applicable.
(2) For any hose not having a part number
identified in Table 1 or Table 2 of this AD
no further action is required by this
paragraph.
TABLE 1—APPLICABLE PART NUMBERS FOR MODEL 737–300, –400, AND –500 SERIES AIRPLANES
Equivalent Boeing supplier part Nos.
Boeing specification part No.
Puritan bennett
10–60174–31
10–60174–35
10–60174–46
60B50059–99
..........................................................................
..........................................................................
..........................................................................
.........................................................................
Hydraflow
173470–31 ..............................................................................
173470–35 ..............................................................................
Not Applicable ........................................................................
Not Applicable ........................................................................
37001–31
37001–35
37001–46
38001–99
TABLE 2—APPLICABLE PART NUMBERS FOR MODEL 737–600, –700, AND –800 SERIES AIRPLANES
Equivalent Boeing supplier part Nos.
Boeing specification part No.
Puritan bennett
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10–60174–31 ..........................................................................
10–60174–35 ..........................................................................
60B50059–124 .......................................................................
Parts Installation
(h) As of the effective date of this AD, no
person may install a crew oxygen hose with
a part number identified in Table 1 or Table
2 of this AD, as applicable, on any airplane.
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173470–31 ..............................................................................
173470–35 ..............................................................................
Not Applicable ........................................................................
Actions Accomplished According to
Previous Issue of Service Bulletins
(i) Actions accomplished before the
effective date of this AD in accordance with
Boeing Alert Service Bulletin 737–35A1053,
dated September 2, 1999; or Boeing Alert
Service Bulletin 737–35A1058, dated
September 2, 1999; as applicable; are
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37001–31
37001–35
38001–124
considered acceptable for compliance with
the corresponding actions specified in this
AD.
Alternative Methods of Compliance
(AMOCs)
(j)(1) The Manager, Seattle Aircraft
Certification Office (ACO), FAA, has the
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authority to approve AMOCs for this AD, if
requested using the procedures found in 14
CFR 39.19. Send information to Attn: Susan
L. Monroe, Aerospace Engineer, Cabin Safety
and Environmental Systems Branch, ANM–
150S, FAA, Seattle Aircraft Certification
Office, 1601 Lind Avenue SW., Renton,
Washington 98057–3356; telephone (425)
917–6457; 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.
Material Incorporated by Reference
wwoods2 on DSK1DXX6B1PROD with RULES_PART 1
(k) You must use Boeing Service Bulletin
737–35A1053, Revision 1, dated June 1,
2000; or Boeing Service Bulletin 737–
35A1058, Revision 1, dated June 1, 2000; as
applicable; 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 July 16,
2010.
Ali Bahrami,
Manager, Transport Airplane Directorate,
Aircraft Certification Service.
[FR Doc. 2010–18624 Filed 8–4–10; 8:45 am]
BILLING CODE 4910–13–P
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2010–0758; Directorate
Identifier 2010–SW–004–AD; Amendment
39–16385; AD 2010–16–08]
RIN 2120–AA64
Airworthiness Directives; Schweizer
Aircraft Corporation (Schweizer) Model
269D Helicopters
Federal Aviation
Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule; request for
comments.
AGENCY:
This amendment adopts a
new airworthiness directive (AD) for the
Schweizer Model 269D helicopters. This
action requires installing a Scroll
Housing Blade Containment Shielding
Kit on each helicopter. This amendment
is prompted by 21 reports of the blades
of the oil cooler impeller separating, one
of which punctured the engine and
transmission oil cooler resulting in loss
of engine oil pressure. The actions
specified in this AD are intended to
protect the oil cooler from uncontained
oil cooler impeller blades that could
damage the oil cooler and result in loss
of engine and transmission oil pressure,
and subsequent loss of control of the
helicopter.
DATES: Effective August 20, 2010.
Comments for inclusion in the Rules
Docket must be received on or before
October 4, 2010.
ADDRESSES: Use one of the following
addresses to submit comments on this
AD:
• Federal eRulemaking Portal: Go to
https://www.regulations.gov. Follow the
instructions for submitting comments.
• Fax: 202–493–2251.
• Mail: U.S. Department of
Transportation, Docket Operations, M–
30, West Building Ground Floor, Room
W12–140, 1200 New Jersey Avenue, SE.,
Washington, DC 20590.
• Hand Delivery: U.S. Department of
Transportation, Docket Operations, M–
30, West Building Ground Floor, Room
W12–140, 1200 New Jersey Avenue, SE.,
Washington, DC 20590, between 9 a.m.
and 5 p.m., Monday through Friday,
except Federal holidays.
You may get the service information
identified in this AD from Schweizer
Aircraft Corporation, Elmira/Corning
Regional Airport, 1250 Schweizer Road,
Horseheads, NY 14845, telephone (607)
739–3821, fax: (607) 796–2488, e-mail
address schweizer@sacusa.com, or at
https://www.sacusa.com/support.
SUMMARY:
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Examining the Docket: You may
examine the docket that contains the
AD, any comments, and other
information on the Internet at https://
www.regulations.gov, or in person at the
Docket Operations office between 9 a.m.
and 5 p.m., Monday through Friday,
except Federal holidays. The Docket
Operations office (telephone (800) 647–
5527) is located in Room W12–140 on
the ground floor of the West Building at
the street address stated in the
ADDRESSES section. Comments will be
available in the AD docket shortly after
receipt.
FOR FURTHER INFORMATION CONTACT:
Richard P. Fiesel, Aviation Safety
Engineer, FAA, New York Aircraft
Certification Office, Airframe and
Propulsion Branch, 1600 Stewart Ave.,
suite 410, Westbury, New York 11590,
telephone (516) 228–7304, fax (516)
794–5531.
SUPPLEMENTARY INFORMATION: This
amendment adopts a new AD for the
Schweizer Model 269D helicopters. This
action requires installing a certain Scroll
Housing Blade Containment Shielding
Kit on each helicopter. This amendment
is prompted by 21 reports of the blades
of the oil cooler impeller separating and
damaging the oil cooler. One failure
resulted in an emergency landing when
the crew experienced vibration and loss
of oil pressure. Further investigation
revealed that a portion of a fan impeller
blade damaged the oil cooler resulting
in a loss of oil. This condition, if not
corrected, could result in loss of engine
and transmission oil pressure and
subsequent loss of control of the
helicopter.
We have reviewed Schweizer Service
Bulletin No. DB–031, dated September
1, 2009 (SB), which specifies installing
a Scroll Housing Blade Containment
Shielding Kit, part number (P/N) SA–
269DK–048 on each Model 269D
helicopter. The manufacturer developed
the containment kit after a recent
incident in which separation of a blade
due to fatigue cracks at the root of the
blade resulted in damage to the oil
cooler and loss of engine oil pressure.
The SB states that the containment kit
will prevent the escape of any separated
impeller blades from the scroll assembly
and relieve the operator of daily and 25hour time-in-service (TIS) inspections.
The SB also states that future
inspections of the cooling impeller will
be done at 100-hour TIS intervals per
the maintenance manual.
This unsafe condition is likely to exist
or develop on other helicopters of the
same type design. Therefore, this AD is
being issued to prevent failure of the oil
cooler, loss of engine and transmission
E:\FR\FM\05AUR1.SGM
05AUR1
]]>Agencies
[Federal Register Volume 75, Number 150 (Thursday, August 5, 2010)]
[Rules and Regulations]
[Pages 47194-47197]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2010-18624]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2010-0046; Directorate Identifier 2009-NM-086-AD;
Amendment 39-16383; AD 2010-16-06]
RIN 2120-AA64
Airworthiness Directives; The Boeing Company Model 737-300, -400,
-500, -600, -700, and -800 Series Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: We are adopting a new airworthiness directive (AD) for certain
Model 737-300, -400, -500, -600, -700, and -800 series airplanes. This
AD requires inspecting to verify the part number of the low-pressure
flex-hoses of the crew oxygen system installed under the oxygen mask
stowage boxes located within the flight deck, and replacing the flex-
hose with a new non-conductive low-pressure flex-hose if necessary.
This AD results from reports of low-pressure flex-hoses of the crew
oxygen system that burned through due to inadvertent electrical current
from a short circuit in the audio select panel. We are issuing this AD
to prevent inadvertent electrical current, which can cause the low-
pressure flex-hoses of the crew oxygen system to melt or burn, causing
oxygen system leakage and smoke or fire.
DATES: This AD is effective September 9, 2010.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in the AD as of September 9,
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,
[[Page 47195]]
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: Susan L. Monroe, Aerospace Engineer,
Cabin Safety and Environmental Systems Branch, ANM-150S, FAA, Seattle
Aircraft Certification Office, 1601 Lind Avenue, SW., Renton,
Washington 98057-3356; telephone (425) 917-6457; 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 737-300, -400, -500, -600, -700, and -800 series
airplanes. That NPRM was published in the Federal Register on January
22, 2010 (75 FR 3662). That NPRM proposed to require inspecting to
verify the part number of the low-pressure flex-hoses of the crew
oxygen system installed under the oxygen mask stowage boxes located
within the flight deck, and replacing the flex-hose with a new non-
conductive low-pressure flex-hose if necessary.
Comments
We gave the public the opportunity to participate in developing
this AD. We considered the comments received.
Support of NPRM
Boeing concurs with the contents of the NPRM.
Request for Clarification of Cup-Type Oxygen Mask Applicability
All Nippon Airways requests that the FAA clarify the NPRM by
including a note stating that the cup-type oxygen mask at the observer
seat position is not included in the applicability statement of the
NPRM, as stated in a note in the Accomplishment Instructions of Boeing
Service Bulletin 737-35A1053, Revision 1, dated June 1, 2000.
We agree that clarification is necessary. Boeing Service Bulletin
737-35A1053, Revision 1, dated June 1, 2000, provides information that
describes the applicable parts and equipment. ADs do not identify parts
and equipment that are not applicable; therefore, the cup-type oxygen
mask is not included in the applicability statement. No change has been
made to the AD in this regard.
Request To Extend Compliance Time
The Air Transport Association on behalf of its member American
Airlines, requests that the 36-month compliance time be extended to 72
months to allow accomplishment during heavy maintenance. American
Airlines states that this extended compliance time would be consistent
with the apparent urgency being placed on this inspection by the FAA,
which has waited over ten years since the original release of the
service bulletin to issue the NPRM. American Airlines also states that
the compliance urgency should also take into account that the proposed
AD results from reports of hoses that burned through on a Model 757
airplane due to electrical current from a short circuit in the audio
selector panel with no mention of reports of burned-through hoses on
properly maintained Model 737 airplanes.
We do not agree. American Airlines provides no technical
justification for extending the compliance time. In developing an
appropriate compliance time, we considered the safety implications,
parts availability, and normal maintenance schedules for timely
accomplishment of the required actions. Further, we arrived at the
compliance time with manufacturer concurrence. In consideration of all
of these factors, we determined that the compliance time, as proposed,
represents an appropriate interval in which the inspections can be done
in a timely manner within the fleet, while still maintaining an
adequate level of safety. If additional data are presented that would
justify a longer compliance time, we may consider further rulemaking on
this issue. No change has been made to the AD in this regard.
Request for Clarification of Conductive Oxygen Hose Part Numbers
The Air Transport Association on behalf of its member American
Airlines, requests clarification regarding the conductive oxygen hose
part numbers in Table 1 of the NPRM and the applicable airplane models.
American Airlines states that the NPRM requires inspections for five
conductive hose part numbers regardless of model applicability, and
does not differentiate between part numbers that are applicable to
Model 737-300, -400, and -500 series airplanes, and those applicable to
Models 737-600, -700, and -800 series airplanes. American Airlines
states that if an operator who flies only Model 737-800 series
airplanes has accomplished Boeing Service Bulletin 737-35A1058,
Revision 1, dated June 1, 2000, for Model 737-800 airplanes prior to
the effective date of the NPRM, the operator would now be required to
perform another inspection to look for the part numbers in Boeing
Service Bulletin 737-35A1053, Revision 1, dated June 1, 2000, which
does not apply to Model 737-800 airplanes. American Airlines asserts
that this places undue burden and expense on the operator.
We agree that clarification is needed regarding the conductive hose
part numbers. We have changed Table 1 of this final rule to identify
part numbers for only Model 737-300, -400, and -500 series airplanes.
Table 2 has been added to this final rule to identify part numbers for
Model 737-600, -700, and -800 series airplanes.
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 will affect 851 airplanes of U.S.
registry. We also estimate that it will take 1 work-hour per product to
comply with this AD. The average labor rate is $85 per work-hour. Based
on these figures, we estimate the cost of this AD to the U.S. operators
to be $72,335, or $85 per product.
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
[[Page 47196]]
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:
2010-16-06 The Boeing Company: Amendment 39-16383. Docket No. FAA-
2010-0046; Directorate Identifier 2009-NM-086-AD.
Effective Date
(a) This airworthiness directive (AD) is effective September 9,
2010.
Affected ADs
(b) None.
Applicability
(c) This AD applies to the airplanes identified in paragraphs
(c)(1) and (c)(2) of this AD, certificated in any category.
(1) The Boeing Company Model 737-300, -400, and -500 series
airplanes, as identified in Boeing Service Bulletin 737-35A1053,
Revision 1, dated June 1, 2000.
(2) The Boeing Company Model 737-600, -700, and -800 series
airplanes, as identified in Boeing Service Bulletin 737-35A1058,
Revision 1, dated June 1, 2000.
Subject
(d) Air Transport Association (ATA) of America Code 35: Oxygen.
Unsafe Condition
(e) This AD results from reports of low-pressure flex-hoses of
the crew oxygen system that burned through due to inadvertent
electrical current from a short circuit in the audio select panel.
The Federal Aviation Administration is issuing this AD to prevent
inadvertent electrical current, which can cause the low-pressure
flex-hoses of the crew oxygen system to melt or burn, resulting in
oxygen system leakage and smoke or 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.
Inspection and Replacement
(g) Within 36 months after the effective date of this AD, do an
inspection to determine whether any low-pressure flex-hose of the
crew oxygen system installed under the oxygen mask stowage box in
the flight deck has a part number identified in Table 1 or Table 2
of this AD, as applicable. A review of airplane maintenance records
is acceptable in lieu of this inspection if the part number of the
low-pressure flex-hoses of the crew oxygen system can be
conclusively determined from that review.
(1) For any hose having a part number identified in Table 1 or
Table 2 of this AD, as applicable, before further flight, replace
the hose with a new or serviceable part, in accordance with the
Accomplishment Instructions of Boeing Service Bulletin 737-35A1053,
Revision 1, dated June 1, 2000; or Boeing Service Bulletin 737-
35A1058, Revision 1, dated June 1, 2000; as applicable.
(2) For any hose not having a part number identified in Table 1
or Table 2 of this AD no further action is required by this
paragraph.
Table 1--Applicable Part Numbers for Model 737-300, -400, and -500
Series Airplanes
------------------------------------------------------------------------
Equivalent Boeing supplier part Nos.
Boeing specification part No. ---------------------------------------
Puritan bennett Hydraflow
------------------------------------------------------------------------
10-60174-31..................... 173470-31......... 37001-31
10-60174-35..................... 173470-35......... 37001-35
10-60174-46..................... Not Applicable.... 37001-46
60B50059-99..................... Not Applicable.... 38001-99
------------------------------------------------------------------------
Table 2--Applicable Part Numbers for Model 737-600, -700, and -800
Series Airplanes
------------------------------------------------------------------------
Equivalent Boeing supplier part Nos.
Boeing specification part No. ---------------------------------------
Puritan bennett Hydraflow
------------------------------------------------------------------------
10-60174-31..................... 173470-31......... 37001-31
10-60174-35..................... 173470-35......... 37001-35
60B50059-124.................... Not Applicable.... 38001-124
------------------------------------------------------------------------
Parts Installation
(h) As of the effective date of this AD, no person may install a
crew oxygen hose with a part number identified in Table 1 or Table 2
of this AD, as applicable, on any airplane.
Actions Accomplished According to Previous Issue of Service Bulletins
(i) Actions accomplished before the effective date of this AD in
accordance with Boeing Alert Service Bulletin 737-35A1053, dated
September 2, 1999; or Boeing Alert Service Bulletin 737-35A1058,
dated September 2, 1999; as applicable; are considered acceptable
for compliance with the corresponding actions specified in this AD.
Alternative Methods of Compliance (AMOCs)
(j)(1) The Manager, Seattle Aircraft Certification Office (ACO),
FAA, has the
[[Page 47197]]
authority to approve AMOCs for this AD, if requested using the
procedures found in 14 CFR 39.19. Send information to Attn: Susan L.
Monroe, Aerospace Engineer, Cabin Safety and Environmental Systems
Branch, ANM-150S, FAA, Seattle Aircraft Certification Office, 1601
Lind Avenue SW., Renton, Washington 98057-3356; telephone (425) 917-
6457; 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.
Material Incorporated by Reference
(k) You must use Boeing Service Bulletin 737-35A1053, Revision
1, dated June 1, 2000; or Boeing Service Bulletin 737-35A1058,
Revision 1, dated June 1, 2000; as applicable; 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 July 16, 2010.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 2010-18624 Filed 8-4-10; 8:45 am]
BILLING CODE 4910-13-P
