Airworthiness Directives; McDonnell Douglas Model 717-200 Airplanes, 4059-4061 [E8-971]

Download as PDF 4059 Federal Register / Vol. 73, No. 16 / Thursday, January 24, 2008 / Rules and Regulations through the full authority digital electronic control fault detection system. Repetitive Inspections for CF6–80C2A Series Turbofan Engines (j) For CF6–80C2A series turbofan engines, perform repetitive thrust reverser inspections using Section 2, Accomplishment Instructions, of MRAS ASB No. CF6– 80C2A1/A2/A3/A5/A8/A5F S/B 78A1015, Revision 7, dated August 30, 2007, at the following: (1) On Airbus A300–600 and A310 series airplanes with left-hand and right-hand reverser halves that do not have the double/ backup P-seal, introduced by MRAS SB No. CF6–80C2 S/B 78A1005, and that do not have LAAs installed, within every 600 hours TSLI. (2) On Airbus A300–600 and A310 series airplanes with left-hand and right-hand reverser halves that have the double/backup P-seal, introduced by MRAS SB No. CF6– 80C2 S/B 78A1005, or that have LAAs installed, within every 7,000 hours TSLI. Engines That Fail an Inspection or Check (k) On engines that fail an inspection or check required by this AD, perform corrective actions or deactivate the fan reverser per Section 2, Accomplishment Instructions, of the applicable MRAS ASB, before further flight. Previous Credit (l) Initial and repetitive inspections and checks of the thrust reverser actuation systems done before the effective date of this AD that use the following ASBs, comply with the requirements specified in this AD: (1) MRAS ASB No. CF6–50 S/B 78A3001, Revision 2, dated December 18, 1997; and MRAS ASB No. CF6–50 S/B 78A3001, Revision 3, dated May 3, 2006. (2) MRAS ASB No. CF6–80A1/A3 S/B 78A1002, Revision 3, dated January 21, 1999; and MRAS ASB No. CF6–80A1/A3 S/B 78A1002, Revision 4, dated May 3, 2006. (3) MRAS ASB No. CF6–80C2 S/B 78A1015, Revision 5, dated January 21, 1999; and MRAS ASB No. CF6–80C2A1/A2/A3/ A5/A8/A5F S/B 78A1015, Revision 6, dated May 3, 2006. Alternative Methods of Compliance (m) The Manager, Engine Certification Office, FAA, has the authority to approve alternative methods of compliance for this AD if requested using the procedures found in 14 CFR 39.19. Related Information (n) France AD 1999–422–IMP(B), dated October 20, 1999, also pertains to the subject of this AD. (o) Contact Robert Green, Aerospace Engineer, Engine Certification Office, FAA, Engine and Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; e-mail: Robert.green@faa.gov; telephone (781) 238–7754; fax (781) 238– 7199, for more information about this AD. (p) You must use the service information specified in Table 1 of this AD to perform the inspections required by this AD. The Director of the Federal Register approved the incorporation by reference of the documents listed in Table 1 of this AD in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Contact Middle River Aircraft Systems, Mail Point 46, 103 Chesapeake Park Plaza, Baltimore, MD, 21220, attn: Warranty Support, telephone: (410) 682–0094, fax: (410) 682–0100 for a copy of this service information. You may review copies at the FAA, New England Region, 12 New England Executive Park, Burlington, MA; or at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202–741–6030, or go to: https:// www.archives.gov/federal-register/cfr/ibrlocations.html. TABLE 1.—INCORPORATION BY REFERENCE Middle River Aircraft Systems Alert Service Bulletin No. Page CF6–50 S/B 78A3001 ...................................................................................................... Total Pages: 50 CF6–80A1/A3 S/B 78A1002 ............................................................................................ Total Pages: 38 CF6–80C2A1/A2/A3/A5/A8/A5F S/B 78A1015 ............................................................... Total Pages: 36 Issued in Burlington, Massachusetts, on January 15, 2008. Peter A. White, Assistant Manager, Engine and Propeller Directorate, Aircraft Certification Service. [FR Doc. E8–975 Filed 1–23–08; 8:45 am] [Docket No. FAA–2007–29329; Directorate Identifier 2007–NM–205–AD; Amendment 39–15342; AD 2008–02–12] SUMMARY: We are adopting a new airworthiness directive (AD) for certain McDonnell Douglas Model 717–200 airplanes. This AD requires modification of the conduit for the forward boost pump of the center fuel tank. This AD results from the finding that a potential chafing condition exists in the volute assembly of the forward boost pump for the center fuel tank. We are issuing this AD to prevent chafing of the fuel boost pump wiring that could lead to arcing to the inside of the 45degree angle fitting, which, in combination with flammable fuel vapors, could result in a fuel tank explosion and consequent loss of the airplane. RIN 2120–AA64 DATES: BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration jlentini on PROD1PC65 with RULES 14 CFR Part 39 Airworthiness Directives; McDonnell Douglas Model 717–200 Airplanes Federal Aviation Administration (FAA), DOT. ACTION: Final rule. AGENCY: VerDate Aug<31>2005 19:26 Jan 23, 2008 Jkt 214001 This AD is effective February 28, 2008. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of February 28, 2008. ADDRESSES: For service information identified in this AD, contact Boeing PO 00000 Frm 00009 Fmt 4700 Sfmt 4700 Revision Date All 4 August 30, 2007. All 5 July 19, 2007. All 7 August 30, 2007. Commercial Airplanes, Long Beach Division, 3855 Lakewood Boulevard, Long Beach, California 90846, Attention: Data and Service Management, Dept. C1–L5A (D800– 0024). 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: Samuel S. Lee, Aerospace Engineer, Propulsion Branch, ANM–140L, FAA, E:\FR\FM\24JAR1.SGM 24JAR1 4060 Federal Register / Vol. 73, No. 16 / Thursday, January 24, 2008 / Rules and Regulations Los Angeles Aircraft Certification Office, 3960 Paramount Boulevard, Lakewood, California 90712–4137; telephone (562) 627–5262; fax (562) 627–5210. 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 McDonnell Douglas Model 717– 200 airplanes. That NPRM was published in the Federal Register on October 11, 2007 (72 FR 57892). That NPRM proposed to require modification of the conduit for the forward boost pump of the center fuel tank. Comments We gave the public the opportunity to participate in developing this AD. We have considered the two comments received from the one commenter. jlentini on PROD1PC65 with RULES Support for the NPRM AirTran Airways supports the NPRM. Request To Allow Use of Original Issue of Service Bulletin AirTran Airways requests that we revise this AD to specify that actions accomplished before the effective date of this AD in accordance with Boeing Service Bulletin 717–28–0007, dated August 22, 2002, are considered acceptable for compliance with the corresponding actions specified in paragraph (f) of this AD provided that a leak check of the conduit is accomplished in accordance with Boeing 717 Airplane Maintenance Manual (AMM) Task 28–22–28–700– 801, ‘‘Leak Test of the Fuel Pump Electrical Conduit.’’ AirTran Airways has accomplished the actions specified in the original issue of the service bulletin on all applicable airplanes in its fleet. AirTran Airways states that Revision 1, dated September 23, 2003, of the service bulletin was published to provide a torque value for the conduits due to an instance of fuel leaking from the conduit at the front spar following accomplishment of the task. AirTran Airways notes that it accomplished a leak check of the conduit during accomplishment of the original issue of the service bulletin, and that the leak check was later added to the AMM in January 2004, as AMM Task 28–22–28– 700–801. The leak check of the conduit ensured that the conduit was not leaking, in the absence of a specified torque value in the original issue of the service bulletin. AirTran Airways believes that, if operators have accomplished the modification in VerDate Aug<31>2005 19:26 Jan 23, 2008 Jkt 214001 accordance with the original issue of the service bulletin, accomplishing a leak check of the conduits using AMM Task 28–22–28–700–801 should be acceptable to ensure that the conduits are not leaking in lieu of accessing the conduit connections again for a torque check. We agree that work done in accordance with Boeing Service Bulletin 717–28–0007, dated August 22, 2002, is acceptable for compliance with the requirements of this AD provided that a leak check of the conduit is accomplished in accordance with Boeing 717 AMM Task 28–22–28–700– 801. We have added a new paragraph (g) to this AD to allow credit for previous accomplishment. 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 change described previously. We also determined that this change will not increase the economic burden on any operator or increase the scope of the AD. Costs of Compliance 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: I There are about 77 airplanes of the affected design in the worldwide fleet. This AD affects about 61 airplanes of U.S. registry. The required actions take about 10 work hours per airplane, at an average labor rate of $80 per work hour. Based on these figures, the estimated cost of the AD for U.S. operators is $48,800, or $800 per airplane. PART 39—AIRWORTHINESS DIRECTIVES 1. The authority citation for part 39 continues to read as follows: I Authority: 49 U.S.C. 106(g), 40113, 44701. 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. I PO 00000 Frm 00010 Fmt 4700 Sfmt 4700 [Amended] 2. The FAA amends § 39.13 by adding the following new AD: 2008–02–12 McDonnell Douglas: Amendment 39–15342. Docket No. FAA– 2007–29329; Directorate Identifier 2007– NM–205–AD. Effective Date (a) This airworthiness directive (AD) is effective February 28, 2008. Affected ADs (b) None. Applicability (c) This AD applies to McDonnell Douglas Model 717–200 airplanes, certificated in any category; as identified in Boeing Service Bulletin 717–28–0007, Revision 1, dated September 23, 2003. Unsafe Condition (d) This AD results from a finding that a potential chafing condition exists in the volute assembly of the forward boost pump for the center fuel tank. We are issuing this E:\FR\FM\24JAR1.SGM 24JAR1 Federal Register / Vol. 73, No. 16 / Thursday, January 24, 2008 / Rules and Regulations AD to prevent chafing of the forward boost pump wiring that could lead to arcing to the inside of the 45-degree angle fitting, which, in combination with flammable fuel vapors, could result in a fuel tank explosion and consequent loss of the airplane. Compliance (e) You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done. Issued in Renton, Washington, on January 14, 2008. Stephen P. Boyd, Assistant Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. E8–971 Filed 1–23–08; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Modification (f) Within 78 months after the effective date of this AD, modify the conduit for the forward fuel boost pump of the center fuel tank, by accomplishing all of the actions specified in Boeing Service Bulletin 717–28– 0007, Revision 1, dated September 23, 2003. Federal Aviation Administration Credit for Actions Done According to Previous Issue of Service Bulletin (g) Actions done before the effective date of this AD in accordance with Boeing Service Bulletin 717–28–0007, dated August 22, 2002, are acceptable for compliance with the requirements of paragraph (f) of this AD provided that a leak check of the conduit is accomplished in accordance with Boeing 717 Airplane Maintenance Manual (AMM) Task 28–22–28–700–801, ‘‘Leak Test of the Fuel Pump Electrical Conduit.’’ RIN 2120–AA64 jlentini on PROD1PC65 with RULES Alternative Methods of Compliance (AMOCs) (h)(1) The Manager, Los Angeles Aircraft Certification Office (ACO), FAA, has the authority to approve AMOCs for this AD, if requested in accordance with the procedures found in 14 CFR 39.19. (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 appropriate principal inspector (PI) in the FAA Flight Standards District Office (FSDO), or lacking a PI, your local FSDO. Material Incorporated by Reference (i) You must use Boeing Service Bulletin 717–28–0007, Revision 1, dated September 23, 2003, 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, Long Beach Division, 3855 Lakewood Boulevard, Long Beach, California 90846, Attention: Data and Service Management, Dept. C1–L5A (D800–0024). (3) You may review copies of the service information incorporated by reference at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or 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. VerDate Aug<31>2005 19:26 Jan 23, 2008 Jkt 214001 14 CFR Part 39 [Docket No. FAA–2007–28375; Directorate Identifier 2007–NM–015–AD; Amendment 39–15346; AD 2008–02–16] Airworthiness Directives; Boeing Model 767–200 and 767–300 Series Airplanes Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Final rule. AGENCY: SUMMARY: The FAA is adopting a new airworthiness directive (AD) for certain Boeing Model 767–200 and 767–300 series airplanes. This AD requires reworking 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 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 becomes effective February 28, 2008. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in the AD as of February 28, 2008. ADDRESSES: For service information identified in this AD, contact Boeing Commercial Airplanes, P.O. Box 3707, Seattle, Washington 98124–2207. 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 PO 00000 Frm 00011 Fmt 4700 Sfmt 4700 4061 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 The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 to include an AD that would apply to certain Boeing Model 767–200 and 767–300 series airplanes. That NPRM was published in the Federal Register on June 19, 2007 (72 FR 33701). That NPRM proposed to require reworking certain duct assemblies in the environmental control system (ECS). Comments We provided the public the opportunity to participate in the development of this AD. We have considered the comments received. Support for the Proposed AD Boeing concurs with the requirements of this AD. Request To Remove Airplane From the Proposed Applicability Hawaiian Airlines requests that we revise the proposed AD to remove one of its airplanes from the proposed applicability. Hawaiian states that the airplane came to them with two ducts installed in the affected area that do not have insulation installed on them. Each of these ducts has a part number not listed in Boeing Service Bulletin 767– 21A0167, Revision 1, dated December 19, 2006. We referred to Boeing Service Bulletin 767–21A0167, Revision 1, as the appropriate source of service information for doing the actions specified in the proposed AD. Hawaiian quotes text from a Boeing message, in which Boeing confirms that the two subject duct assemblies do not need rework in accordance with the service bulletin because neither of the ducts assemblies are wrapped with Boeing Material Specification (BMS) 8–39 polyurethane foam insulation. E:\FR\FM\24JAR1.SGM 24JAR1

Agencies

[Federal Register Volume 73, Number 16 (Thursday, January 24, 2008)]
[Rules and Regulations]
[Pages 4059-4061]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E8-971]


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

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2007-29329; Directorate Identifier 2007-NM-205-AD; 
Amendment 39-15342; AD 2008-02-12]
RIN 2120-AA64


Airworthiness Directives; McDonnell Douglas Model 717-200 
Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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

SUMMARY: We are adopting a new airworthiness directive (AD) for certain 
McDonnell Douglas Model 717-200 airplanes. This AD requires 
modification of the conduit for the forward boost pump of the center 
fuel tank. This AD results from the finding that a potential chafing 
condition exists in the volute assembly of the forward boost pump for 
the center fuel tank. We are issuing this AD to prevent chafing of the 
fuel boost pump wiring that could lead to arcing to the inside of the 
45-degree angle fitting, which, in combination with flammable fuel 
vapors, could result in a fuel tank explosion and consequent loss of 
the airplane.

DATES: This AD is effective February 28, 2008.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in this AD as of February 28, 
2008.

ADDRESSES: For service information identified in this AD, contact 
Boeing Commercial Airplanes, Long Beach Division, 3855 Lakewood 
Boulevard, Long Beach, California 90846, Attention: Data and Service 
Management, Dept. C1-L5A (D800-0024).

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: Samuel S. Lee, Aerospace Engineer, 
Propulsion Branch, ANM-140L, FAA,

[[Page 4060]]

Los Angeles Aircraft Certification Office, 3960 Paramount Boulevard, 
Lakewood, California 90712-4137; telephone (562) 627-5262; fax (562) 
627-5210.

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 McDonnell Douglas Model 717-200 airplanes. That NPRM was 
published in the Federal Register on October 11, 2007 (72 FR 57892). 
That NPRM proposed to require modification of the conduit for the 
forward boost pump of the center fuel tank.

Comments

    We gave the public the opportunity to participate in developing 
this AD. We have considered the two comments received from the one 
commenter.

Support for the NPRM

    AirTran Airways supports the NPRM.

Request To Allow Use of Original Issue of Service Bulletin

    AirTran Airways requests that we revise this AD to specify that 
actions accomplished before the effective date of this AD in accordance 
with Boeing Service Bulletin 717-28-0007, dated August 22, 2002, are 
considered acceptable for compliance with the corresponding actions 
specified in paragraph (f) of this AD provided that a leak check of the 
conduit is accomplished in accordance with Boeing 717 Airplane 
Maintenance Manual (AMM) Task 28-22-28-700-801, ``Leak Test of the Fuel 
Pump Electrical Conduit.'' AirTran Airways has accomplished the actions 
specified in the original issue of the service bulletin on all 
applicable airplanes in its fleet. AirTran Airways states that Revision 
1, dated September 23, 2003, of the service bulletin was published to 
provide a torque value for the conduits due to an instance of fuel 
leaking from the conduit at the front spar following accomplishment of 
the task. AirTran Airways notes that it accomplished a leak check of 
the conduit during accomplishment of the original issue of the service 
bulletin, and that the leak check was later added to the AMM in January 
2004, as AMM Task 28-22-28-700-801. The leak check of the conduit 
ensured that the conduit was not leaking, in the absence of a specified 
torque value in the original issue of the service bulletin. AirTran 
Airways believes that, if operators have accomplished the modification 
in accordance with the original issue of the service bulletin, 
accomplishing a leak check of the conduits using AMM Task 28-22-28-700-
801 should be acceptable to ensure that the conduits are not leaking in 
lieu of accessing the conduit connections again for a torque check.
    We agree that work done in accordance with Boeing Service Bulletin 
717-28-0007, dated August 22, 2002, is acceptable for compliance with 
the requirements of this AD provided that a leak check of the conduit 
is accomplished in accordance with Boeing 717 AMM Task 28-22-28-700-
801. We have added a new paragraph (g) to this AD to allow credit for 
previous accomplishment.

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 change described previously. We also determined that 
this change will not increase the economic burden on any operator or 
increase the scope of the AD.

Costs of Compliance

    There are about 77 airplanes of the affected design in the 
worldwide fleet. This AD affects about 61 airplanes of U.S. registry. 
The required actions take about 10 work hours per airplane, at an 
average labor rate of $80 per work hour. Based on these figures, the 
estimated cost of the AD for U.S. operators is $48,800, or $800 per 
airplane.

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:

2008-02-12 McDonnell Douglas: Amendment 39-15342. Docket No. FAA-
2007-29329; Directorate Identifier 2007-NM-205-AD.

Effective Date

    (a) This airworthiness directive (AD) is effective February 28, 
2008.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to McDonnell Douglas Model 717-200 
airplanes, certificated in any category; as identified in Boeing 
Service Bulletin 717-28-0007, Revision 1, dated September 23, 2003.

Unsafe Condition

    (d) This AD results from a finding that a potential chafing 
condition exists in the volute assembly of the forward boost pump 
for the center fuel tank. We are issuing this

[[Page 4061]]

AD to prevent chafing of the forward boost pump wiring that could 
lead to arcing to the inside of the 45-degree angle fitting, which, 
in combination with flammable fuel vapors, could result in a fuel 
tank explosion and consequent loss of the airplane.

Compliance

    (e) You are responsible for having the actions required by this 
AD performed within the compliance times specified, unless the 
actions have already been done.

Modification

    (f) Within 78 months after the effective date of this AD, modify 
the conduit for the forward fuel boost pump of the center fuel tank, 
by accomplishing all of the actions specified in Boeing Service 
Bulletin 717-28-0007, Revision 1, dated September 23, 2003.

Credit for Actions Done According to Previous Issue of Service Bulletin

    (g) Actions done before the effective date of this AD in 
accordance with Boeing Service Bulletin 717-28-0007, dated August 
22, 2002, are acceptable for compliance with the requirements of 
paragraph (f) of this AD provided that a leak check of the conduit 
is accomplished in accordance with Boeing 717 Airplane Maintenance 
Manual (AMM) Task 28-22-28-700-801, ``Leak Test of the Fuel Pump 
Electrical Conduit.''

Alternative Methods of Compliance (AMOCs)

    (h)(1) The Manager, Los Angeles Aircraft Certification Office 
(ACO), FAA, has the authority to approve AMOCs for this AD, if 
requested in accordance with the procedures found in 14 CFR 39.19.
    (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 appropriate principal inspector (PI) in the FAA 
Flight Standards District Office (FSDO), or lacking a PI, your local 
FSDO.

Material Incorporated by Reference

    (i) You must use Boeing Service Bulletin 717-28-0007, Revision 
1, dated September 23, 2003, 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, Long Beach Division, 3855 Lakewood 
Boulevard, Long Beach, California 90846, Attention: Data and Service 
Management, Dept. C1-L5A (D800-0024).
    (3) You may review copies of the service information 
incorporated by reference at the FAA, Transport Airplane 
Directorate, 1601 Lind Avenue, SW., Renton, Washington; or 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 January 14, 2008.
Stephen P. Boyd,
Assistant Manager, Transport Airplane Directorate, Aircraft 
Certification Service.
 [FR Doc. E8-971 Filed 1-23-08; 8:45 am]
BILLING CODE 4910-13-P
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.