
[Federal Register Volume 77, Number 33 (Friday, February 17, 2012)]
[Rules and Regulations]
[Pages 9518-9520]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2012-2973]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2011-0725; Directorate Identifier 2011-NM-065-AD; 
Amendment 39-16943; AD 2012-03-02]
RIN 2120-AA64


Airworthiness Directives; The Boeing Company Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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SUMMARY: We are adopting a new airworthiness directive (AD) for certain 
The Boeing Company Model 767-200, -300, and -300F series airplanes. 
This AD was prompted by reports of loss of avionics cooling due to an 
unserviceable relay installed on a panel as part of the cabin air 
conditioning and temperature control system (CACTCS). This AD requires 
doing certain wiring changes, installing a new relay and necessary 
wiring in the CACTCS, and performing an operational test of the cooling 
pack system. We are issuing this AD to prevent loss of electrical 
equipment bay cooling and the overheating of flight deck instruments, 
which would result in the eventual loss of primary flight displays, an 
unusually high pilot workload, and depressurization of the cabin.

DATES: This AD is effective March 23, 2012.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in the AD as of March 23, 
2012.

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; email: me.boecom@boeing.com; 
Internet https://www.myboeingfleet.com. You may review copies of the 
referenced 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.

Examining the AD Docket

    You may examine the AD docket on the Internet at http://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 (phone: 800-647-5527) is 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: Ana Martinez Hueto, Aerospace 
Engineer, Cabin Safety and Environmental Systems Branch, ANM-150S, FAA, 
Seattle Aircraft Certification Office, 1601 Lind Avenue SW., Renton, WA 
98057-3356; phone: 425-917-6592; fax: 425-917-6590; email: 
ana.m.hueto@faa.gov.

SUPPLEMENTARY INFORMATION: 

Discussion

    We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR 
part 39 to include an AD that would apply to the specified products. 
That NPRM published in the Federal Register on August 24, 2011 (76 FR 
52899). That NPRM proposed to require doing certain wiring changes, 
installing a new relay and necessary wiring in the CACTCS, and 
performing an operational test of the cooling pack system.

Comments

    We gave the public the opportunity to participate in developing 
this AD. We have considered the comments received. Boeing supports the 
NPRM (76 FR 52899, August 24, 2011). American Airlines stated 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 except for minor editorial changes. We have 
determined that these minor changes:
     Are consistent with the intent that was proposed in the 
NPRM (76 FR 52899, August 24, 2011) for correcting the unsafe 
condition; and
     Do not add any additional burden upon the public than was 
already proposed in the NPRM (76 FR 52899, August 24, 2011).

Costs of Compliance

    We estimate that this AD affects 35 airplanes of U.S. registry.
    We estimate the following costs to comply with this AD:

[[Page 9519]]



                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                    Cost per       Cost on U.S.
               Action                        Labor cost           Parts cost        product         operators
----------------------------------------------------------------------------------------------------------------
Change wire bundle, install relay,    29 work-hours x $85 per          $1,240           $3,705         $129,675
 and operational test.                 hour = $2,465 per
                                       relay installation.
----------------------------------------------------------------------------------------------------------------

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 the DOT Regulatory Policies 
and Procedures (44 FR 11034, February 26, 1979),
    (3) Will not affect intrastate aviation in Alaska, and
    (4) 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.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, Safety.

Adoption of the Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA amends 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

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 airworthiness 
directive (AD):

2012-03-02 The Boeing Company: Amendment 39-16943; Docket No. FAA-
2011-0725; Directorate Identifier 2011-NM-065-AD.

(a) Effective Date

    This AD is effective March 23, 2012.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to The Boeing Company Model 767-200 and -300 
series airplanes, certificated in any category, as identified in 
Boeing Special Attention Service Bulletin 767-21-0246, dated January 
7, 2011; and Model 767-300F series airplanes, certificated in any 
category, as identified in Boeing Special Attention Service Bulletin 
767-21-0234, dated August 6, 2009.

(d) Subject

    Joint Aircraft System Component (JASC)/Air Transport Association 
(ATA) of America Code 21: Air conditioning.

(e) Unsafe Condition

    This AD results from reports of loss of avionics cooling due to 
an unserviceable relay installed on a panel as part of the cabin air 
conditioning and temperature control system (CACTCS). We are issuing 
this AD to prevent loss of electrical equipment bay cooling and the 
overheating of flight deck instruments, which would result in the 
eventual loss of primary flight displays, an unusually high pilot 
workload, and depressurization of the cabin.

(f) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.

(g) Installation of New Relay and Wiring Bundle

    Within 72 months after the effective date of this AD: Change the 
wire bundle route and wiring, install a new relay and applicable 
wiring in the CACTCS, and do an operational test of the cooling pack 
system, in accordance with the Accomplishment Instructions of the 
service information specified in paragraph (g)(1) or (g)(2) of this 
AD, as applicable.
    (1) For Model 767-200 and 767-300 series airplanes: Boeing 
Special Attention Service Bulletin 767-21-0246, dated January 7, 
2011.
    (2) For Model 767-300F series airplanes: Boeing Special 
Attention Service Bulletin 767-21-0234, dated August 6, 2009.

(h) Alternative Methods of Compliance (AMOCs)

    (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. In accordance with 14 
CFR 39.19, send your request to your principal inspector or local 
Flight Standards District Office, as appropriate. If sending 
information directly to the manager of the ACO, send it to the 
attention of the person identified in the Related Information 
section of this AD. Information may be emailed to: 9-ANM-Seattle-ACO-AMOC-Requests@faa.gov.
    (2) Before using any approved AMOC, notify your appropriate 
principal inspector, or lacking a principal inspector, the manager 
of the local flight standards district office/certificate holding 
district office.

(i) Related Information

    For more information about this AD, contact Ana Martinez Hueto, 
Aerospace Engineer, Cabin Safety and Environmental Systems Branch, 
ANM-150S, FAA, Seattle Aircraft Certification Office, 1601 Lind 
Avenue SW., Renton, WA 98057-3356; phone 425-917-6592; fax 425-917-
6590; email: ana.m.hueto@faa.gov.

(j) Material Incorporated by Reference

    (1) You must use the following service information to do the 
actions required by this AD, unless the AD specifies otherwise. The 
Director of the Federal Register approved the incorporation by 
reference (IBR) of the following service information under 5 U.S.C. 
552(a) and 1 CFR part 51:
    (i) Boeing Special Attention Service Bulletin 767-21-0246, dated 
January 7, 2011.
    (ii) Boeing Special Attention Service Bulletin 767-21-0234, 
dated August 6, 2009.
    (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; email 
me.boecom@boeing.com; Internet https://www.myboeingfleet.com.
    (3) You may review copies of the referenced service information 
at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., 
Renton, Washington. For

[[Page 9520]]

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: http://www.archives.gov/federal-register/cfr/ibr-locations.html.

    Issued in Renton, Washington, on January 26, 2012.
Kalene C. Yanamura,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2012-2973 Filed 2-16-12; 8:45 am]
BILLING CODE 4910-13-P


