[Federal Register Volume 71, Number 128 (Wednesday, July 5, 2006)]
[Rules and Regulations]
[Pages 38053-38054]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 06-5871]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2006-24430; Directorate Identifier 2006-NM-048-AD; 
Amendment 39-14671; AD 2006-13-18]
RIN 2120-AA64


Airworthiness Directives; McDonnell Douglas Model DC-9-31, DC-9-
32, DC-9-32F, DC-9-33F, DC-9-34, and DC-9-34F Airplanes; and Model DC-
9-40 and DC-9-50 Series Airplanes

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

ACTION: Final rule.

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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for 
certain transport category airplanes, identified above. This AD 
requires installing a bonding jumper from the boost pump volute to the 
fuel tank structure, and related investigative/corrective actions. This 
AD results from fuel system reviews conducted by the manufacturer. We 
are issuing this AD to prevent point-contact arcing or filament heating 
in the fuel tank, which, in the event of a short or ground fault inside 
the fuel tank, could result in a fuel tank explosion and consequent 
loss of the airplane.

DATES: This AD becomes effective August 9, 2006.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in the AD as of August 9, 
2006.

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

FOR FURTHER INFORMATION CONTACT: Samuel Lee, Aerospace Engineer, 
Propulsion Branch, ANM-140L, FAA, Los Angeles Aircraft Certification 
Office, 3960 Paramount Boulevard, Lakewood, California 90712-4137; 
telephone (562) 627-5262; fax (562) 627-5210.

SUPPLEMENTARY INFORMATION:

Examining the Docket

    You may examine the airworthiness directive (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 notice of proposed rulemaking (NPRM) to amend 14 
CFR part 39 to include an AD that would apply to certain McDonnell 
Douglas transport category airplanes. That NPRM was published in the 
Federal Register on April 13, 2006 (71 FR 19140). That NPRM proposed to 
require installing a bonding jumper from the boost pump volute to the 
fuel tank structure, and related investigative/corrective actions.

Comments

    We provided the public the opportunity to participate in the 
development of this AD. We received no

[[Page 38054]]

comments on the NPRM or on the determination of the cost to the public.

Conclusion

    We have carefully reviewed the available data and determined that 
air safety and the public interest require adopting the AD as proposed.

Costs of Compliance

    There are about 250 airplanes of the affected design in the 
worldwide fleet. This AD will affect about 152 airplanes of U.S. 
registry. The required actions will take about 9 work hours per 
airplane, at an average labor rate of $80 per work hour. Required parts 
will cost about $2,385 per airplane. Based on these figures, the 
estimated cost of this AD for U.S. operators is $471,960, or $3,105 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

    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):

2006-13-18 McDonnell Douglas: Amendment 39-14671. Docket No. FAA-
2006-24430; Directorate Identifier 2006-NM-048-AD.

Effective Date

    (a) This AD becomes effective August 9, 2006.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to McDonnell Douglas Model DC-9-31, DC-9-32, 
DC-9-32F, DC-9-33F, DC-9-34, DC-9-34F, DC-9-41, and DC-9-51 
airplanes, certificated in any category; as identified in Boeing 
Service Bulletin DC9-28-214, dated December 16, 2005.

Unsafe Condition

    (d) This AD results from fuel system reviews conducted by the 
manufacturer. We are issuing this AD to prevent point-contact arcing 
or filament heating in the fuel tank, which, in the event of a short 
or ground fault inside the fuel tank, 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.

Installation

    (f) Within 60 months after the effective date of this AD, 
install a bonding jumper from the boost pump volute to the fuel tank 
structure, and do all applicable related investigative and 
corrective actions before further flight; by doing all the actions 
specified in the Accomplishment Instructions of Boeing Service 
Bulletin DC9-28-214, dated December 16, 2005.

Alternative Methods of Compliance (AMOCs)

    (g)(1) The Manager, Los Angeles 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

    (h) You must use Boeing Service Bulletin DC9-28-214, dated 
December 16, 2005, 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 this document in 
accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Contact Boeing 
Commercial Airplanes, Long Beach Division, 3855 Lakewood Boulevard, 
Long Beach, California 90846, Attention: Data and Service 
Management, Dept. C1-L5A (D800-0024), for a copy of this service 
information. You may review copies at the Docket Management 
Facility, U.S. Department of Transportation, 400 Seventh Street SW., 
Room PL-401, Nassif Building, Washington, DC; on the Internet at 
http://dms.dot.gov; or at the National Archives and Records 
Administration (NARA). For information on the availability of this 
material at the NARA, call (202) 741-6030, or go to http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.

    Issued in Renton, Washington, on June 22, 2006.
Kalene C. Yanamura,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 06-5871 Filed 7-3-06; 8:45 am]
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