Airworthiness Directives; The Boeing Company Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747-400F, 747SR, and 747SP Series Airplanes, 38007-38009 [2010-15659]

Download as PDF 38007 Federal Register / Vol. 75, No. 126 / Thursday, July 1, 2010 / Rules and Regulations Boeing Service Bulletin 747–53A2449, Revision 1, dated May 24, 2001. (5) 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. (6) 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. (7) 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 17, 2010. Robert D. Breneman, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2010–15654 Filed 6–30–10; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2010–0275; Directorate Identifier 2009–NM–231–AD; Amendment 39–16344; AD 2010–14–01] RIN 2120–AA64 Airworthiness Directives; The Boeing Company Model 747–100, 747–100B, 747–100B SUD, 747–200B, 747–200C, 747–200F, 747–300, 747–400, 747– 400F, 747SR, and 747SP Series Airplanes Federal Aviation Administration (FAA), DOT. ACTION: Final rule. AGENCY: SUMMARY: We are adopting a new airworthiness directive (AD) for certain Model 747–100, 747–100B, 747–100B SUD, 747–200B, 747–200C, 747–200F, 747–300, 747–400, 747–400F, 747SR, and 747SP series airplanes. This AD requires reworking or replacing certain duct assemblies in the environmental control system (ECS). This AD results from reports of duct assemblies in the ECS with burned Boeing Material Specification (BMS) 8–39 polyurethane foam insulation. This proposed AD also results from a report from the airplane manufacturer that airplanes were assembled with duct assemblies in the ECS wrapped with BMS 8–39 polyurethane foam insulation, a material of which the fire retardant properties deteriorate with age. We are issuing this AD to prevent a potential electrical arc from igniting the BMS 8– 39 polyurethane foam insulation on the duct assemblies of the ECS, which could propagate a small fire and lead to a larger fire that might spread throughout the airplane through the ECS. DATES: This AD is effective August 5, 2010. The Director of the Federal Register approved the incorporation by reference of certain publications listed in the AD as of August 5, 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: Sue McCormick, Aerospace Engineer, Cabin Safety and Environmental Systems Branch, ANM–150S, FAA, Seattle Aircraft Certification Office, 1601 Lind Avenue, SW., Renton, Washington 98057–3356; telephone (303) 342–1082; 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 747–100, 747–100B, 747– 100B SUD, 747–200B, 747–200C, 747– 200F, 747–300, 747–400, 747–400F, 747SR, and 747SP series airplanes. That NPRM was published in the Federal Register on April 12, 2010 (75 FR 18446). That NPRM proposed to require reworking or replacing certain duct assemblies in the environmental control system (ECS). Comments We gave the public the opportunity to participate in developing this AD. We considered the comments received. The Boeing Company concurs with the contents of the NPRM, and Delta Airlines states that it is not affected by the NPRM. Conclusion We reviewed the relevant data, considered the comments received, and determined that air safety and the public interest require adopting the AD as proposed. Costs of Compliance There are about 558 airplanes of the affected design in the worldwide fleet. The average labor rate is $85 per workhour. The following table provides the estimated costs for U.S. operators to comply with this AD. ESTIMATED COSTS Cost per airplane Number of U.S.-registered airplanes 8 per duct (average of $12,305 (average) .......... 130 ducts per airplane). $100,705 (average) ... 185 ................... $18,630,425. 1 per duct (1 duct per airplane). $85 ............................ Up to 168 ......... Up to $14,280. WReier-Aviles on DSKGBLS3C1PROD with RULES Action Duct assembly rework, specified in Boeing Service Bulletin 747– 21A2421. Duct assembly rework or replacement, specified in Boeing Service Bulletin 747–21A2422. VerDate Mar<15>2010 Work hours 15:16 Jun 30, 2010 Jkt 220001 PO 00000 Parts cost, per airplane The manufacturer states that it will supply required parts to the operators at no cost. Frm 00033 Fmt 4700 Sfmt 4700 E:\FR\FM\01JYR1.SGM 01JYR1 Fleet cost 38008 Federal Register / Vol. 75, No. 126 / Thursday, July 1, 2010 / Rules and Regulations Authority for This Rulemaking § 39.13 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 Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: WReier-Aviles on DSKGBLS3C1PROD with RULES ■ 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. VerDate Mar<15>2010 15:16 Jun 30, 2010 Jkt 220001 [Amended] 2. The FAA amends § 39.13 by adding the following new AD: 2010–14–01 The Boeing Company: Amendment 39–16344. Docket No. FAA–2010–0275; Directorate Identifier 2009–NM–231–AD. Effective Date (a) This airworthiness directive (AD) is effective August 5, 2010. Affected ADs (b) None. Applicability (c) This AD applies to the airplanes specified in paragraphs (c)(1) and (c)(2) of this AD, certificated in any category. (1) The Boeing Company Model 747–100, 747–100B, 747–100B SUD, 747–200B, 747– 200C, 747–200F, 747–300, 747–400, 747SR, and 747SP series airplanes identified in Boeing Service Bulletin 747–21A2421, Revision 2, dated December 19, 2006. (2) The Boeing Company Model 747–100, 747–100B, 747–200B, 747–200C, 747–200F, 747–300, 747–400F, 747SR, and 747SP series airplanes identified in Boeing Service Bulletin 747–21A2422, Revision 2, dated November 16, 2006. Subject (d) Air Transport Association (ATA) of America Code 21: Air conditioning. Unsafe Condition (e) This AD results from reports of duct assemblies in the environmental control system (ECS) with burned Boeing Material Specification (BMS) 8–39 polyurethane foam insulation. This AD also results from a report from the airplane manufacturer that airplanes were assembled with duct assemblies in the ECS wrapped with BMS 8–39 polyurethane foam insulation, a material of which the fire retardant properties deteriorate with age. We are issuing this AD to prevent a potential electrical arc from igniting the BMS 8–39 polyurethane foam insulation on the duct assemblies of the ECS, which could propagate a small fire and lead to a larger fire that could spread throughout the airplane through the ECS. 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. ECS Duct Assembly Rework or Replacement (g) Within 72 months after the effective date of this AD, rework or replace the applicable duct assemblies in the ECS specified in and in accordance with the Accomplishment Instructions and Appendices A through F of Boeing Service Bulletin 747–21A2421, Revision 2, dated December 19, 2006 (for Model 747–100, 747– 100B, 747–100B SUD, 747–200B, 747–200C, 747–200F, 747–300, 747–400, 747SR, and 747SP series airplanes); and the Accomplishment Instructions and Appendices A through C of Boeing Service Bulletin 747–21A2422, Revision 2, dated PO 00000 Frm 00034 Fmt 4700 Sfmt 4700 November 16, 2006 (for Model 747–100, 747– 100B, 747–200B, 747–200C, 747–200F, 747– 300, 747–400F, 747SR, and 747SP series airplanes). Parts Installation (h) As of the effective date of this AD, no person may install an ECS duct assembly with BMS 8–39 polyurethane foam insulation on any airplane. Alternative Methods of Compliance (AMOCs) (i)(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: Sue McCormick, Aerospace Engineer, Cabin Safety and Environmental Systems Branch, ANM–150S, FAA, Seattle Aircraft Certification Office, 1601 Lind Avenue, SW., Renton, Washington 98057–3356; telephone (303) 342–1082; 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 (j) You must use Boeing Service Bulletin 747–21A2421, Revision 2, dated December 19, 2006; or Boeing Service Bulletin 747– 21A2422, Revision 2, dated November 16, 2006; 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. E:\FR\FM\01JYR1.SGM 01JYR1 Federal Register / Vol. 75, No. 126 / Thursday, July 1, 2010 / Rules and Regulations Issued in Renton, Washington, on June 17, 2010. Robert D. Breneman, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2010–15659 Filed 6–30–10; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2010–0638; Directorate Identifier 2007–NM–333–AD; Amendment 39–16346; AD 2008–01–01] RIN 2120–AA64 Airworthiness Directives; The Boeing Company Model 737–200, –300, –400, –500, –600, –700, –800, and –900 Series Airplanes; Model 747–400 Series Airplanes; Model 757–200 and 757–300 Series Airplanes; Model 767–200, 767– 300, and 767–400ER Series Airplanes; and Model 777–200 Series Airplanes AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Final rule; request for comments. SUMMARY: This document publishes in the Federal Register an amendment adopting airworthiness directive (AD) 2008–01–01 that was sent previously to all known U.S. owners and operators of certain Model 737–200, –300, –400, –500, –600, –700, –800, and –900 series airplanes; Model 747–400 series airplanes; Model 757–200 and 757–300 series airplanes; Model 767–200, 767– 300, and 767–400ER series airplanes; and Model 777–200 series airplanes by individual notices. This AD requires replacing a certain flight deck door feature and revising the modification record placard. This AD is prompted by a report indicating that the feature of the flight deck door is defective. We are issuing this AD to prevent failure of this feature, which could jeopardize flight safety. DATES: This AD becomes effective July 6, 2010 to all persons except those persons to whom it was made immediately effective by AD 2008–01– 01, issued December 26, 2007, which contained the requirements of this amendment. The Director of the Federal Register approved the incorporation by reference of certain publications listed in the AD as of July 6, 2010. We must receive comments on this AD by August 16, 2010. ADDRESSES: You may send comments by any of the following methods: • 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. For service information identified in this AD, contact Jamco America, Inc., 1018 80th Street, SW., Everett, WA 98203; telephone 425–347–4735, ext: 1192 (David Crotty); fax 425–353–2343; e-mail David_Crotty@jamcoamerica.com; Internet https://jamcoamerica.com. 38009 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 street address for the Docket Office (telephone 800–647– 5527) is in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Patrick Gillespie, 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) 917–6429; fax (425) 917–6590. On December 26, 2007, we issued AD 2008– 01–01, which applies to certain Model 737–200, –300, –400, –500, –600, –700, –800, and –900 series airplanes; Model 747–400 series airplanes; Model 757– 200 and 757–300 series airplanes; Model 767–200, 767–300, and 767– 400ER series airplanes; and Model 777– 200 series airplanes. SUPPLEMENTARY INFORMATION: Background We have received a report indicating that a feature of the flight deck door is defective. This condition, if not corrected, could result in a failure of the feature, which could jeopardize flight safety. Relevant Service Information We reviewed the following service bulletins: TABLE—SERVICE BULLETINS Jamco Service Bulletin— For Model— 52–2295, Revision 1, dated October 10, 2007 ........................................ 737–200 –300, –400, –500, –600, –700, –800, and –900 series airplanes. 767–200, –300, and –400ER series airplanes. 747–400 series airplanes. 757–200 and –300 series airplanes. 777–200 series airplanes. WReier-Aviles on DSKGBLS3C1PROD with RULES 52–2302, 52–2303, 52–2304, 52–2305, Revision Revision Revision Revision 1, 1, 2, 1, dated dated dated dated October 10, 2007 ........................................ October 10, 2007 ........................................ November 1, 2007 ...................................... October 10, 2007 ........................................ The service bulletins describe procedures for replacing a certain flight deck door feature and revising the modification record placard. FAA’s Determination and Requirements of This AD Since the unsafe condition described is likely to exist or develop on other VerDate Mar<15>2010 15:16 Jun 30, 2010 Jkt 220001 airplanes of these same type designs, we issued AD 2008–01–01 to prevent the failure of a certain feature of the flight deck door. The AD requires accomplishing the actions specified in the service information previously described. We found that notice and opportunity for prior public comment on AD 2008– PO 00000 Frm 00035 Fmt 4700 Sfmt 4700 01–01 were contrary to the public interest, and good cause existed to make the AD effective immediately by individual notices issued on December 26, 2007, to all known U.S. owners and operators of certain Model 737–200, –300, –400, –500, –600, –700, –800, and –900 series airplanes; Model 747–400 series airplanes; Model 757–200 and E:\FR\FM\01JYR1.SGM 01JYR1

Agencies

[Federal Register Volume 75, Number 126 (Thursday, July 1, 2010)]
[Rules and Regulations]
[Pages 38007-38009]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2010-15659]

-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2010-0275; Directorate Identifier 2009-NM-231-AD;
Amendment 39-16344; AD 2010-14-01]
RIN 2120-AA64

Airworthiness Directives; The Boeing Company Model 747-100, 747-
100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400,
747-400F, 747SR, and 747SP Series Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

-----------------------------------------------------------------------

SUMMARY: We are adopting a new airworthiness directive (AD) for certain
Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-200F,
747-300, 747-400, 747-400F, 747SR, and 747SP series airplanes. This AD
requires reworking or replacing certain duct assemblies in the
environmental control system (ECS). This AD results from reports of
duct assemblies in the ECS with burned Boeing Material Specification
(BMS) 8-39 polyurethane foam insulation. This proposed AD also results
from a report from the airplane manufacturer that airplanes were
assembled with duct assemblies in the ECS wrapped with BMS 8-39
polyurethane foam insulation, a material of which the fire retardant
properties deteriorate with age. We are issuing this AD to prevent a
potential electrical arc from igniting the BMS 8-39 polyurethane foam
insulation on the duct assemblies of the ECS, which could propagate a
small fire and lead to a larger fire that might spread throughout the
airplane through the ECS.

DATES: This AD is effective August 5, 2010.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in the AD as of August 5,
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: Sue McCormick, Aerospace Engineer,
Cabin Safety and Environmental Systems Branch, ANM-150S, FAA, Seattle
Aircraft Certification Office, 1601 Lind Avenue, SW., Renton,
Washington 98057-3356; telephone (303) 342-1082; 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 747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-
200F, 747-300, 747-400, 747-400F, 747SR, and 747SP series airplanes.
That NPRM was published in the Federal Register on April 12, 2010 (75
FR 18446). That NPRM proposed to require reworking or replacing certain
duct assemblies in the environmental control system (ECS).

Comments

We gave the public the opportunity to participate in developing
this AD. We considered the comments received. The Boeing Company
concurs with the contents of the NPRM, and Delta Airlines states that
it is not affected by the NPRM.

Conclusion

We reviewed the relevant data, considered the comments received,
and determined that air safety and the public interest require adopting
the AD as proposed.

Costs of Compliance

There are about 558 airplanes of the affected design in the
worldwide fleet. The average labor rate is $85 per work-hour. The
following table provides the estimated costs for U.S. operators to
comply with this AD.

Estimated Costs
--------------------------------------------------------------------------------------------------------------------------------------------------------
Parts cost, per Number of U.S.-
Action Work hours airplane Cost per airplane registered airplanes Fleet cost
--------------------------------------------------------------------------------------------------------------------------------------------------------
Duct assembly rework, specified 8 per duct $12,305 (average). $100,705 (average)........... 185.................... $18,630,425.
in Boeing Service Bulletin 747- (average of 130
21A2421. ducts per
airplane).
Duct assembly rework or 1 per duct (1 duct The manufacturer $85.......................... Up to 168.............. Up to $14,280.
replacement, specified in per airplane). states that it
Boeing Service Bulletin 747- will supply
21A2422. required parts to
the operators at
no cost.
--------------------------------------------------------------------------------------------------------------------------------------------------------

[[Page 38008]]

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

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:

2010-14-01 The Boeing Company: Amendment 39-16344. Docket No. FAA-
2010-0275; Directorate Identifier 2009-NM-231-AD.

Effective Date

(a) This airworthiness directive (AD) is effective August 5,
2010.

Affected ADs

(b) None.

Applicability

(c) This AD applies to the airplanes specified in paragraphs
(c)(1) and (c)(2) of this AD, certificated in any category.
(1) The Boeing Company Model 747-100, 747-100B, 747-100B SUD,
747-200B, 747-200C, 747-200F, 747-300, 747-400, 747SR, and 747SP
series airplanes identified in Boeing Service Bulletin 747-21A2421,
Revision 2, dated December 19, 2006.
(2) The Boeing Company Model 747-100, 747-100B, 747-200B, 747-
200C, 747-200F, 747-300, 747-400F, 747SR, and 747SP series airplanes
identified in Boeing Service Bulletin 747-21A2422, Revision 2, dated
November 16, 2006.

Subject

(d) Air Transport Association (ATA) of America Code 21: Air
conditioning.

Unsafe Condition

(e) This AD results from reports of duct assemblies in the
environmental control system (ECS) with burned Boeing Material
Specification (BMS) 8-39 polyurethane foam insulation. This AD also
results from a report from the airplane manufacturer that airplanes
were assembled with duct assemblies in the ECS wrapped with BMS 8-39
polyurethane foam insulation, a material of which the fire retardant
properties deteriorate with age. We are issuing this AD to prevent a
potential electrical arc from igniting the BMS 8-39 polyurethane
foam insulation on the duct assemblies of the ECS, which could
propagate a small fire and lead to a larger fire that could spread
throughout the airplane through the ECS.

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.

ECS Duct Assembly Rework or Replacement

(g) Within 72 months after the effective date of this AD, rework
or replace the applicable duct assemblies in the ECS specified in
and in accordance with the Accomplishment Instructions and
Appendices A through F of Boeing Service Bulletin 747-21A2421,
Revision 2, dated December 19, 2006 (for Model 747-100, 747-100B,
747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747SR,
and 747SP series airplanes); and the Accomplishment Instructions and
Appendices A through C of Boeing Service Bulletin 747-21A2422,
Revision 2, dated November 16, 2006 (for Model 747-100, 747-100B,
747-200B, 747-200C, 747-200F, 747-300, 747-400F, 747SR, and 747SP
series airplanes).

Parts Installation

(h) As of the effective date of this AD, no person may install
an ECS duct assembly with BMS 8-39 polyurethane foam insulation on
any airplane.

Alternative Methods of Compliance (AMOCs)

(i)(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: Sue McCormick, Aerospace Engineer, Cabin Safety and
Environmental Systems Branch, ANM-150S, FAA, Seattle Aircraft
Certification Office, 1601 Lind Avenue, SW., Renton, Washington
98057-3356; telephone (303) 342-1082; 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

(j) You must use Boeing Service Bulletin 747-21A2421, Revision
2, dated December 19, 2006; or Boeing Service Bulletin 747-21A2422,
Revision 2, dated November 16, 2006; 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.

[[Page 38009]]

Issued in Renton, Washington, on June 17, 2010.
Robert D. Breneman,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 2010-15659 Filed 6-30-10; 8:45 am]
BILLING CODE 4910-13-P

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