Airworthiness Directives; Boeing Model 767-200 and -300 Series Airplanes, 26285-26287 [E7-8767]

Download as PDF Federal Register / Vol. 72, No. 89 / Wednesday, May 9, 2007 / Rules and Regulations DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2005–21748; Directorate Identifier 2005–NM–071–AD; Amendment 39–15044; AD 2007–10–03] SW., Nassif Building, Room PL–401, Washington, DC. Contact Boeing Commercial Airplanes, P.O. Box 3707, Seattle, Washington 98124–2207, for service information identified in this AD. FOR FURTHER INFORMATION CONTACT: Airworthiness Directives; Boeing Model 767–200 and –300 Series Airplanes Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Final rule. Marcia Smith, 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) 917–6484; fax (425) 917–6590. SUPPLEMENTARY INFORMATION: RIN 2120–AA64 rmajette on PROD1PC67 with RULES AGENCY: Examining the Docket SUMMARY: The FAA is adopting a new airworthiness directive (AD) for certain Boeing Model 767–200 and –300 series airplanes. For certain airplanes, this AD requires repetitive inspections for discrepancies of the tube assemblies and insulation of the metered fire extinguisher system and the bleed air duct couplings of the auxiliary power unit (APU) located in the aft cargo compartment, and corrective actions if necessary. For certain other airplanes, this AD requires a one-time inspection for sufficient clearance between the fire extinguishing tube and the APU bleed air duct in the aft cargo compartment, and modification if necessary. This AD also requires an inspection for signs of chafing and to verify sufficient clearance between the fire extinguisher system and the bleed air duct couplings of the APU. This AD results from one report indicating that an operator found a hole in the discharge tube assembly for the metered fire extinguishing system; and another report indicating that an operator found chafing of the fire extinguishing tube against the APU duct that resulted in a crack in the tube. We are issuing this AD to prevent fire extinguishing agent from leaking out of the tube assembly in the aft cargo compartment which, in the event of a fire in the aft cargo compartment, could result in an insufficient concentration of fire extinguishing agent, and consequent inability of the fire extinguishing system to suppress the fire. DATES: This AD becomes effective June 13, 2007. The Director of the Federal Register approved the incorporation by reference of certain publications listed in the AD as of June 13, 2007. ADDRESSES: You may examine the AD docket on the Internet at http:// dms.dot.gov or in person at the Docket Management Facility, U.S. Department of Transportation, 400 Seventh Street, VerDate Aug<31>2005 13:44 May 08, 2007 Jkt 211001 You may examine the AD docket on the Internet at http://dms.dot.gov or in person at the Docket Management Facility office between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The Docket Management Facility office (telephone (800) 647–5227) is located on the plaza level of the Nassif Building at the street address stated in the ADDRESSES section. Discussion The FAA issued a supplemental 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 –300 series airplanes. That supplemental NPRM was published in the Federal Register on June 7, 2006 (71 FR 32873). For certain airplanes, that supplemental NPRM proposed to require repetitive inspections for discrepancies of the tube assemblies and insulation of the metered fire extinguisher system and the bleed air duct couplings of the auxiliary power unit (APU) located in the aft cargo compartment; and corrective actions if necessary. For certain other airplanes, that supplemental NPRM proposed to require a one-time inspection for sufficient clearance between the fire extinguishing tube and the APU bleed air duct in the aft cargo compartment, and modification if necessary. That supplemental NPRM also proposed to require an inspection for signs of chafing and to verify sufficient clearance between the fire extinguisher system and the bleed air duct couplings of the APU. Comments We provided the public the opportunity to participate in the development of this AD. We have considered the comments received. PO 00000 Frm 00003 Fmt 4700 Sfmt 4700 26285 Request To Refer to Latest Revision of Service Bulletin Boeing, the Air Transport Association (ATA), on behalf of American Airlines, and Japan Airlines ask that we refer to Boeing Service Bulletin 767–26A0130, Revision 2, dated October 31, 2006, in the final rule. We referred to Revision 1 of the service bulletin dated December 15, 2005, as the appropriate source of service information for doing certain actions specified in the supplemental NPRM. Japan Airlines states that Revision 1 includes incorrect requirements, and asks that Revision 2 be included in the final rule to correct the specified requirements. Japan Airlines adds that if the final rule is issued before issuance of Revision 2 of the service bulletin, the mistakes (included in Japan Airlines comments) should be corrected in the final rule. Boeing states that inclusion of Revision 2 will avoid issuance of a future supplemental NPRM. American Airlines indicates that Boeing provided it with information acknowledging that Revision 1 would be revised and released in the second quarter of 2006. American Airlines recommends that Revision 2 refer to the APU duct couplings only, not both the APU duct and the APU duct couplings. We agree to refer to Revision 2 of the service bulletin in paragraph (f)(1) of the AD. Revision 2 does the following: • Corrects certain station numbers. • Adds clarification procedures for moving the fire extinguisher tube, and clarifies the inspection and repair of the fire extinguisher tube. • Clarifies certain procedures specified in Figures 3 through 12, 15, and 16. • Adds Figures 19 and 20 to clarify clamp removal and installation. • Adds manpower requirements for Figures 19 and 20. Revision 2 also refers to the APU duct couplings instead of both the APU duct and the APU duct couplings in certain sections of the Accomplishment Instructions. We have revised the AD to refer to Revision 2 of the service bulletin as the appropriate source of service information for doing certain actions. We have also revised paragraph (g) of this AD to add credit for actions done before the effective date of this AD in accordance with Boeing Alert Service Bulletin 767–26A0130, Revision 1, dated December 15, 2005. We acknowledge that there were errors in certain procedures specified in Revision 1, but those errors did not prevent accomplishing the inspections and any applicable corrective actions in a manner that would address the identified unsafe condition. E:\FR\FM\09MYR1.SGM 09MYR1 26286 Federal Register / Vol. 72, No. 89 / Wednesday, May 9, 2007 / Rules and Regulations Request to Change Note 1 The ATA, on behalf of its member Delta Airlines, asks that Note 1 of the supplemental NPRM be changed to omit the revision level of Boeing Service Bulletin 767–26–0118, Revision 2, dated December 21, 2004, so it matches the reference to Boeing Alert Service Bulletin 767–26A0123. We partially agree with the request. In Note 1 of the supplemental NPRM Boeing Alert Service Bulletin 767– 26A0123, without a date or revision level, referred to Boeing Service Bulletin 767–26–0118, Revision 2, dated December 21, 2004, as the appropriate source of service information for accomplishing the modification of the fire extinguishing tube assembly. Since the AD must specify a revision level and date in the requirements, in lieu of removing the revision level and date for Boeing Service Bulletin 767–26–0118, we have removed Note 1 and added a new paragraph (f)(2)(ii) to the AD. Paragraph (f)(2)(ii) requires accomplishing the modification of the fire extinguishing tube assembly in accordance with Boeing Service Bulletin 767–26–0118, Revision 2, dated December 21, 2004. We have also added a new paragraph (h) to this AD (and reidentified subsequent paragraphs) to include credit for previously accomplishing the actions specified in Boeing Service Bulletin 767–26–0118, dated June 20, 2002, or Revision 1, dated October 3, 2002. Accomplishment Instructions of the service bulletin, and the correct station numbers (STA 1140 and STA 1340) are specified in the Accomplishment Instructions of both Revisions 1 and 2 of the referenced service bulletin. We inadvertently specified STA 1197 in paragraph (f)(1), and we have corrected that error accordingly. Clarification Made to This AD We have carefully reviewed the available data, including the comments received, and determined that air safety and the public interest require adopting the AD with the changes described previously. These changes will neither increase the economic burden on any operator nor increase the scope of the AD. We have changed paragraph (f)(1) of this AD to clarify the station numbers for the fire extinguishing tube assemblies. Paragraph (f)(1) of the supplemental NPRM proposed to require performing detailed and general visual inspections for discrepancies of the fire extinguishing tube assemblies between STA 1197 and STA 1340. Those station numbers were incorrectly specified in the Summary section of Revision 1 of the service bulletin. However, paragraph (f)(1) specifies doing the actions in accordance with the Conclusion Costs of Compliance There are about 749 airplanes of the affected design in the worldwide fleet. The following table provides the estimated costs for U.S. operators to comply with this AD. ESTIMATED COSTS Action Work hours Inspection in Service Bulletin 767–26A0123 ..................... Inspection in Service Bulletin 767–26A0130, Revision 2 .. Average labor rate per hour 1 5 $80 80 None ........ None ........ rmajette on PROD1PC67 with RULES Authority for This Rulemaking Title 49 of the United States Code specifies the FAA’s authority to issue rules on aviation safety. Subtitle I, Section 106, describes the authority of the FAA Administrator. Subtitle VII, Aviation Programs, describes in more detail the scope of the Agency’s authority. We are issuing this rulemaking under the authority described in Subtitle VII, Part A, Subpart III, Section 44701, ‘‘General requirements.’’ Under that section, Congress charges the FAA with promoting safe flight of civil aircraft in air commerce by prescribing regulations for practices, methods, and procedures the Administrator finds necessary for safety in air commerce. This regulation is within the scope of that authority because it addresses an unsafe condition that is likely to exist or develop on products identified in this rulemaking action. 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. We prepared a regulatory evaluation of the estimated costs to comply with this AD and placed it in the AD docket. See the ADDRESSES section for a location to examine the regulatory evaluation. Regulatory Findings We have determined that this AD will not have federalism implications under Executive Order 13132. This AD will not have a substantial direct effect on List of Subjects in 14 CFR Part 39 VerDate Aug<31>2005 13:44 May 08, 2007 Jkt 211001 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. PO 00000 Frm 00004 Fmt 4700 Sfmt 4700 Cost per airplane Parts Number of U.S.registered airplanes $80 400 292 292 Fleet cost $23,360 116,800 Adoption of the Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: I 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. § 39.13 [Amended] 2. The Federal Aviation Administration (FAA) amends § 39.13 by adding the following new airworthiness directive (AD): I 2007–10–03 Boeing: Amendment 39– 15044. Docket No. FAA–2005–21748; Directorate Identifier 2005-NM–071-AD. Effective Date (a) This AD becomes effective June 13, 2007. Affected ADs (b) None. E:\FR\FM\09MYR1.SGM 09MYR1 Federal Register / Vol. 72, No. 89 / Wednesday, May 9, 2007 / Rules and Regulations Applicability (c) This AD applies to Boeing Model 767– 200 and –300 series airplanes; certificated in any category; with a metered fire extinguisher system in the aft cargo compartment. Unsafe Condition (d) This AD was prompted by one report indicating that an operator found a hole in the discharge tube assembly for the metered fire extinguishing system; and another report indicating that an operator found chafing of the fire extinguishing tube against the auxiliary power unit (APU) duct that resulted in a crack in the tube. We are issuing this AD to prevent fire extinguishing agent from leaking out of the tube assembly in the aft cargo compartment which, in the event of a fire in the aft cargo compartment, could result in an insufficient concentration of fire extinguishing agent, and consequent inability of the fire extinguishing system to suppress the fire. rmajette on PROD1PC67 with RULES 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. Inspections and Corrective Actions (f) Within 24 months or 8,000 flight hours after the effective date of this AD, whichever is first: Accomplish the actions required by paragraphs (f)(1) and (f)(2) of this AD, as applicable. (1) For airplanes identified in Boeing Service Bulletin 767–26A0130, Revision 2, dated October 31, 2006: Perform detailed and general visual inspections for discrepancies of the fire extinguishing tube assemblies between station (STA) 1140 and STA 1340, and the insulation of the metered fire extinguisher system and the bleed air duct couplings of the APU located in the aft cargo compartment, and any applicable corrective actions, by doing all the applicable actions specified in the Accomplishment Instructions of Boeing Service Bulletin 767– 26A0130, Revision 2, dated October 31, 2006. Do all applicable corrective actions before further flight in accordance with the service bulletin. Repeat the inspections thereafter at intervals not to exceed 24 months or 8,000 flight hours, whichever is first. Installation of the tube assembly in the correct location, in accordance with the service bulletin, terminates the repetitive inspections for that assembly only. (2) For airplanes identified in Boeing Alert Service Bulletin 767–26A0123, dated August 22, 2002: Accomplish the actions required by paragraphs (f)(2)(i) and (f)(2)(ii) of this AD, as applicable. (i) Perform a general visual inspection for sufficient clearance between the fire extinguishing tube and the APU duct on the left sidewall from STA 1355 through 1365 inclusive, and do all applicable modifications, by doing all the actions specified in the Accomplishment Instructions of Boeing Alert Service Bulletin 767–26A0123, dated August 22, 2002. Do all applicable modifications before further flight. (ii) If there is insufficient clearance between the fire extinguishing tube and the VerDate Aug<31>2005 13:44 May 08, 2007 Jkt 211001 26287 APU duct: Before further flight, accomplish the modification of the fire extinguishing tube assembly by doing all the actions specified in the Accomplishment Instructions of Boeing Service Bulletin 767– 26–0118, Revision 2, dated December 21, 2004. Accomplishing the modification in this paragraph terminates the repetitive inspections for that assembly only. DEPARTMENT OF TRANSPORTATION Credit for Actions Accomplished Previously (g) Accomplishing the inspections and corrective actions required by paragraph (f)(1) of this AD before the effective date of this AD, in accordance with Boeing Alert Service Bulletin 767–26A0130, dated December 2, 2004, or Revision 1, dated December 15, 2005; is considered acceptable for compliance with the corresponding actions in paragraph (f)(1) of this AD. (h) Accomplishing the actions required by paragraph (f)(2)(ii) of this AD before the effective date of this AD, in accordance with Boeing Service Bulletin 767–26–0118, dated June 20, 2002, or Revision 1, dated October 3, 2002; is considered acceptable for compliance with the corresponding actions in paragraph (f)(2)(ii) of this AD for accomplishing the modification of the fire extinguishing tube assembly. Establishment of Class E Airspace; Front Royal-Warren County, VA Alternative Methods of Compliance (AMOCs) (i)(1) The Manager, Seattle Aircraft Certification Office, FAA, has the authority to approve AMOCs for this AD, if requested in accordance with the procedures found in 14 CFR 39.19. (2) Before using any AMOC approved in accordance with § 39.19 on any airplane to which the AMOC applies, notify the appropriate principal inspector in the FAA Flight Standards Certificate Holding District Office. Material Incorporated by Reference (j) You must use Boeing Service Bulletin 767–26A0130, Revision 2, dated October 31, 2006; Boeing Alert Service Bulletin 767– 26A0123, dated August 22, 2002; and Boeing Service Bulletin 767–26–0118, Revision 2, dated December 21, 2004; as applicable; to perform the actions that are required by this AD, unless the AD specifies otherwise. The Director of the Federal Register approved the incorporation by reference of these documents in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Contact Boeing Commercial Airplanes, P.O. Box 3707, Seattle, Washington 98124–2207, for a copy of this service information. You may review copies 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: http://www.archives.gov/federal-register/ cfr/ibr-locations.html. Issued in Renton, Washington, on April 30, 2007. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. E7–8767 Filed 5–8–07; 8:45 am] BILLING CODE 4910–13–P PO 00000 Frm 00005 Fmt 4700 Sfmt 4700 Federal Aviation Administration 14 CFR Part 71 [Docket No. FAA 2007–27512, Airspace Docket No. 07–AEA–01] Federal Aviation Administration (FAA), DOT. ACTION: Direct final rule; request for comments. AGENCY: SUMMARY: This action establishes a Class E airspace area at Front Royal-Warren County Airport, Front Royal, VA (KFFR) to provide for adequate controlled airspace for those aircraft using the new Area Navigation (RNAV) Instrument Approach Procedure to the Airport. DATES: Effective 0901 UTC, July 5, 2007. The Director of the Federal Register approves this incorporation by reference action under 1 CFR part 51, subject to the annual revision of FAA Order 7400.9 and publication of conforming amendments. Comments for inclusion in the Rules Docket must be received on or before June 8, 2007. ADDRESSES: Send comments on the rule to the Docket Management System, U.S. Department of Transportation, Room Plaza 401, 400 Seventh Street, SW., Washington, DC 20590–0001. You must identify the docket number, FAA–2007– 27512; airspace docket number, 07– AEA–01, at the beginning of your comments. You may also submit comments on the Internet at http:// dms.dot.gov. You may review the public docket containing the proposal, any comments received, and any final disposition in person at the Dockets Office between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The Docket Office (telephone 1–800–647–5527) is located on the plaza level of the Department of Transportation NASSIF Building at the street address stated above. An informal docket may be examined during normal business hours in the FAA Eastern Service Center, by contacting the Manager, Systems Support, AJO–2E2, Federal Aviation Administration, Eastern Service Center, 1701 Columbia Ave, College Park, GA, 30337. FOR FURTHER INFORMATION CONTACT: Mark D. Ward, Manager, Systems Support, AJO–2E2, FAA Eastern Service Center, 1701 Columbia Ave., College Park, GA, 30337; telephone (404) 305– 5570; fax (404) 305–5099. E:\FR\FM\09MYR1.SGM 09MYR1

Agencies

[Federal Register Volume 72, Number 89 (Wednesday, May 9, 2007)]
[Rules and Regulations]
[Pages 26285-26287]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E7-8767]



[[Page 26285]]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2005-21748; Directorate Identifier 2005-NM-071-AD; 
Amendment 39-15044; AD 2007-10-03]
RIN 2120-AA64


Airworthiness Directives; Boeing Model 767-200 and -300 Series 
Airplanes

AGENCY: Federal Aviation Administration (FAA), Department of 
Transportation (DOT).

ACTION: Final rule.

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

SUMMARY: The FAA is adopting a new airworthiness directive (AD) for 
certain Boeing Model 767-200 and -300 series airplanes. For certain 
airplanes, this AD requires repetitive inspections for discrepancies of 
the tube assemblies and insulation of the metered fire extinguisher 
system and the bleed air duct couplings of the auxiliary power unit 
(APU) located in the aft cargo compartment, and corrective actions if 
necessary. For certain other airplanes, this AD requires a one-time 
inspection for sufficient clearance between the fire extinguishing tube 
and the APU bleed air duct in the aft cargo compartment, and 
modification if necessary. This AD also requires an inspection for 
signs of chafing and to verify sufficient clearance between the fire 
extinguisher system and the bleed air duct couplings of the APU. This 
AD results from one report indicating that an operator found a hole in 
the discharge tube assembly for the metered fire extinguishing system; 
and another report indicating that an operator found chafing of the 
fire extinguishing tube against the APU duct that resulted in a crack 
in the tube. We are issuing this AD to prevent fire extinguishing agent 
from leaking out of the tube assembly in the aft cargo compartment 
which, in the event of a fire in the aft cargo compartment, could 
result in an insufficient concentration of fire extinguishing agent, 
and consequent inability of the fire extinguishing system to suppress 
the fire.

DATES: This AD becomes effective June 13, 2007.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in the AD as of June 13, 2007.

ADDRESSES: You may examine the AD docket on the Internet at http://
dms.dot.gov or in person at the Docket Management Facility, U.S. 
Department of Transportation, 400 Seventh Street, SW., Nassif Building, 
Room PL-401, Washington, DC.
    Contact Boeing Commercial Airplanes, P.O. Box 3707, Seattle, 
Washington 98124-2207, for service information identified in this AD.

FOR FURTHER INFORMATION CONTACT: Marcia Smith, 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) 917-6484; fax (425) 917-6590.

SUPPLEMENTARY INFORMATION:

Examining the Docket

    You may examine the AD docket on the Internet at http://dms.dot.gov 
or in person at the Docket Management Facility office between 9 a.m. 
and 5 p.m., Monday through Friday, except Federal holidays. The Docket 
Management Facility office (telephone (800) 647-5227) is located on the 
plaza level of the Nassif Building at the street address stated in the 
ADDRESSES section.

Discussion

    The FAA issued a supplemental 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 -300 series airplanes. That supplemental NPRM 
was published in the Federal Register on June 7, 2006 (71 FR 32873). 
For certain airplanes, that supplemental NPRM proposed to require 
repetitive inspections for discrepancies of the tube assemblies and 
insulation of the metered fire extinguisher system and the bleed air 
duct couplings of the auxiliary power unit (APU) located in the aft 
cargo compartment; and corrective actions if necessary. For certain 
other airplanes, that supplemental NPRM proposed to require a one-time 
inspection for sufficient clearance between the fire extinguishing tube 
and the APU bleed air duct in the aft cargo compartment, and 
modification if necessary. That supplemental NPRM also proposed to 
require an inspection for signs of chafing and to verify sufficient 
clearance between the fire extinguisher system and the bleed air duct 
couplings of the APU.

Comments

    We provided the public the opportunity to participate in the 
development of this AD. We have considered the comments received.

Request To Refer to Latest Revision of Service Bulletin

    Boeing, the Air Transport Association (ATA), on behalf of American 
Airlines, and Japan Airlines ask that we refer to Boeing Service 
Bulletin 767-26A0130, Revision 2, dated October 31, 2006, in the final 
rule. We referred to Revision 1 of the service bulletin dated December 
15, 2005, as the appropriate source of service information for doing 
certain actions specified in the supplemental NPRM. Japan Airlines 
states that Revision 1 includes incorrect requirements, and asks that 
Revision 2 be included in the final rule to correct the specified 
requirements. Japan Airlines adds that if the final rule is issued 
before issuance of Revision 2 of the service bulletin, the mistakes 
(included in Japan Airlines comments) should be corrected in the final 
rule. Boeing states that inclusion of Revision 2 will avoid issuance of 
a future supplemental NPRM. American Airlines indicates that Boeing 
provided it with information acknowledging that Revision 1 would be 
revised and released in the second quarter of 2006. American Airlines 
recommends that Revision 2 refer to the APU duct couplings only, not 
both the APU duct and the APU duct couplings.
    We agree to refer to Revision 2 of the service bulletin in 
paragraph (f)(1) of the AD. Revision 2 does the following:
     Corrects certain station numbers.
     Adds clarification procedures for moving the fire 
extinguisher tube, and clarifies the inspection and repair of the fire 
extinguisher tube.
     Clarifies certain procedures specified in Figures 3 
through 12, 15, and 16.
     Adds Figures 19 and 20 to clarify clamp removal and 
installation.
     Adds manpower requirements for Figures 19 and 20.
    Revision 2 also refers to the APU duct couplings instead of both 
the APU duct and the APU duct couplings in certain sections of the 
Accomplishment Instructions. We have revised the AD to refer to 
Revision 2 of the service bulletin as the appropriate source of service 
information for doing certain actions. We have also revised paragraph 
(g) of this AD to add credit for actions done before the effective date 
of this AD in accordance with Boeing Alert Service Bulletin 767-
26A0130, Revision 1, dated December 15, 2005. We acknowledge that there 
were errors in certain procedures specified in Revision 1, but those 
errors did not prevent accomplishing the inspections and any applicable 
corrective actions in a manner that would address the identified unsafe 
condition.

[[Page 26286]]

Request to Change Note 1

    The ATA, on behalf of its member Delta Airlines, asks that Note 1 
of the supplemental NPRM be changed to omit the revision level of 
Boeing Service Bulletin 767-26-0118, Revision 2, dated December 21, 
2004, so it matches the reference to Boeing Alert Service Bulletin 767-
26A0123.
    We partially agree with the request. In Note 1 of the supplemental 
NPRM Boeing Alert Service Bulletin 767-26A0123, without a date or 
revision level, referred to Boeing Service Bulletin 767-26-0118, 
Revision 2, dated December 21, 2004, as the appropriate source of 
service information for accomplishing the modification of the fire 
extinguishing tube assembly. Since the AD must specify a revision level 
and date in the requirements, in lieu of removing the revision level 
and date for Boeing Service Bulletin 767-26-0118, we have removed Note 
1 and added a new paragraph (f)(2)(ii) to the AD. Paragraph (f)(2)(ii) 
requires accomplishing the modification of the fire extinguishing tube 
assembly in accordance with Boeing Service Bulletin 767-26-0118, 
Revision 2, dated December 21, 2004. We have also added a new paragraph 
(h) to this AD (and re-identified subsequent paragraphs) to include 
credit for previously accomplishing the actions specified in Boeing 
Service Bulletin 767-26-0118, dated June 20, 2002, or Revision 1, dated 
October 3, 2002.

Clarification Made to This AD

    We have changed paragraph (f)(1) of this AD to clarify the station 
numbers for the fire extinguishing tube assemblies. Paragraph (f)(1) of 
the supplemental NPRM proposed to require performing detailed and 
general visual inspections for discrepancies of the fire extinguishing 
tube assemblies between STA 1197 and STA 1340. Those station numbers 
were incorrectly specified in the Summary section of Revision 1 of the 
service bulletin. However, paragraph (f)(1) specifies doing the actions 
in accordance with the Accomplishment Instructions of the service 
bulletin, and the correct station numbers (STA 1140 and STA 1340) are 
specified in the Accomplishment Instructions of both Revisions 1 and 2 
of the referenced service bulletin. We inadvertently specified STA 1197 
in paragraph (f)(1), and we have corrected that error accordingly.

Conclusion

    We have carefully reviewed the available data, including the 
comments received, and determined that air safety and the public 
interest require adopting the AD with the changes described previously. 
These changes will neither increase the economic burden on any operator 
nor increase the scope of the AD.

Costs of Compliance

    There are about 749 airplanes of the affected design in the 
worldwide fleet. The following table provides the estimated costs for 
U.S. operators to comply with this AD.

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                         Number  of
                                               Average                       Cost per      U.S.-
            Action               Work hours   labor rate       Parts         airplane    registered   Fleet cost
                                               per hour                                  airplanes
----------------------------------------------------------------------------------------------------------------
Inspection in Service Bulletin            1          $80  None...........          $80          292      $23,360
 767-26A0123.
Inspection in Service Bulletin            5           80  None...........          400          292      116,800
 767-26A0130, Revision 2.
----------------------------------------------------------------------------------------------------------------

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

    We have determined that 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.
    We prepared a regulatory evaluation of the estimated costs to 
comply with this AD and placed it in the AD docket. See the ADDRESSES 
section for a location to examine the regulatory evaluation.

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 Federal Aviation Administration (FAA) amends Sec.  39.13 by 
adding the following new airworthiness directive (AD):

2007-10-03 Boeing: Amendment 39-15044. Docket No. FAA-2005-21748; 
Directorate Identifier 2005-NM-071-AD.

Effective Date

    (a) This AD becomes effective June 13, 2007.

Affected ADs

    (b) None.

[[Page 26287]]

Applicability

    (c) This AD applies to Boeing Model 767-200 and -300 series 
airplanes; certificated in any category; with a metered fire 
extinguisher system in the aft cargo compartment.

Unsafe Condition

    (d) This AD was prompted by one report indicating that an 
operator found a hole in the discharge tube assembly for the metered 
fire extinguishing system; and another report indicating that an 
operator found chafing of the fire extinguishing tube against the 
auxiliary power unit (APU) duct that resulted in a crack in the 
tube. We are issuing this AD to prevent fire extinguishing agent 
from leaking out of the tube assembly in the aft cargo compartment 
which, in the event of a fire in the aft cargo compartment, could 
result in an insufficient concentration of fire extinguishing agent, 
and consequent inability of the fire extinguishing system to 
suppress the fire.

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.

Inspections and Corrective Actions

    (f) Within 24 months or 8,000 flight hours after the effective 
date of this AD, whichever is first: Accomplish the actions required 
by paragraphs (f)(1) and (f)(2) of this AD, as applicable.
    (1) For airplanes identified in Boeing Service Bulletin 767-
26A0130, Revision 2, dated October 31, 2006: Perform detailed and 
general visual inspections for discrepancies of the fire 
extinguishing tube assemblies between station (STA) 1140 and STA 
1340, and the insulation of the metered fire extinguisher system and 
the bleed air duct couplings of the APU located in the aft cargo 
compartment, and any applicable corrective actions, by doing all the 
applicable actions specified in the Accomplishment Instructions of 
Boeing Service Bulletin 767-26A0130, Revision 2, dated October 31, 
2006. Do all applicable corrective actions before further flight in 
accordance with the service bulletin. Repeat the inspections 
thereafter at intervals not to exceed 24 months or 8,000 flight 
hours, whichever is first. Installation of the tube assembly in the 
correct location, in accordance with the service bulletin, 
terminates the repetitive inspections for that assembly only.
    (2) For airplanes identified in Boeing Alert Service Bulletin 
767-26A0123, dated August 22, 2002: Accomplish the actions required 
by paragraphs (f)(2)(i) and (f)(2)(ii) of this AD, as applicable.
    (i) Perform a general visual inspection for sufficient clearance 
between the fire extinguishing tube and the APU duct on the left 
sidewall from STA 1355 through 1365 inclusive, and do all applicable 
modifications, by doing all the actions specified in the 
Accomplishment Instructions of Boeing Alert Service Bulletin 767-
26A0123, dated August 22, 2002. Do all applicable modifications 
before further flight.
    (ii) If there is insufficient clearance between the fire 
extinguishing tube and the APU duct: Before further flight, 
accomplish the modification of the fire extinguishing tube assembly 
by doing all the actions specified in the Accomplishment 
Instructions of Boeing Service Bulletin 767-26-0118, Revision 2, 
dated December 21, 2004. Accomplishing the modification in this 
paragraph terminates the repetitive inspections for that assembly 
only.

Credit for Actions Accomplished Previously

    (g) Accomplishing the inspections and corrective actions 
required by paragraph (f)(1) of this AD before the effective date of 
this AD, in accordance with Boeing Alert Service Bulletin 767-
26A0130, dated December 2, 2004, or Revision 1, dated December 15, 
2005; is considered acceptable for compliance with the corresponding 
actions in paragraph (f)(1) of this AD.
    (h) Accomplishing the actions required by paragraph (f)(2)(ii) 
of this AD before the effective date of this AD, in accordance with 
Boeing Service Bulletin 767-26-0118, dated June 20, 2002, or 
Revision 1, dated October 3, 2002; is considered acceptable for 
compliance with the corresponding actions in paragraph (f)(2)(ii) of 
this AD for accomplishing the modification of the fire extinguishing 
tube assembly.

Alternative Methods of Compliance (AMOCs)

    (i)(1) The Manager, Seattle Aircraft Certification Office, FAA, 
has the authority to approve AMOCs for this AD, if requested in 
accordance with the procedures found in 14 CFR 39.19.
    (2) Before using any AMOC approved in accordance with Sec.  
39.19 on any airplane to which the AMOC applies, notify the 
appropriate principal inspector in the FAA Flight Standards 
Certificate Holding District Office.

Material Incorporated by Reference

    (j) You must use Boeing Service Bulletin 767-26A0130, Revision 
2, dated October 31, 2006; Boeing Alert Service Bulletin 767-
26A0123, dated August 22, 2002; and Boeing Service Bulletin 767-26-
0118, Revision 2, dated December 21, 2004; as applicable; to perform 
the actions that are required by this AD, unless the AD specifies 
otherwise. The Director of the Federal Register approved the 
incorporation by reference of these documents in accordance with 5 
U.S.C. 552(a) and 1 CFR part 51. Contact Boeing Commercial 
Airplanes, P.O. Box 3707, Seattle, Washington 98124-2207, for a copy 
of this service information. You may review copies 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: http://www.archives.gov/federal-
register/cfr/ibr-locations.html.

    Issued in Renton, Washington, on April 30, 2007.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. E7-8767 Filed 5-8-07; 8:45 am]
BILLING CODE 4910-13-P