Airworthiness Directives; McDonnell Douglas Model MD-90-30 Airplanes

[Federal Register Volume 70, Number 121 (Friday, June 24, 2005)]
[Rules and Regulations]
[Pages 36479-36480]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 05-12313]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2004-19867; Directorate Identifier 2004-NM-58-AD; 
Amendment 39-14151; AD 2005-13-14]
RIN 2120-AA64


Airworthiness Directives; McDonnell Douglas Model MD-90-30 
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 all 
McDonnell Douglas Model MD-90-30 airplanes. This AD requires replacing 
existing dual anti-skid control manifolds (DACM) with new, improved or 
reworked and reidentified DACMs; inspecting the inlet filters and other 
components of the DACMs for damage; replacing any damaged DACM 
components with new or serviceable components; and flushing/cleaning 
the braking system prior to replacing the inlet filters. This AD is 
prompted by reports of multiple incidents of blown tires on landing 
while using maximum autobrake. We are issuing this AD to prevent 
metallic fibers from the first stage filter of the servo valves inside 
the DACM from becoming lodged in the first stage nozzle of the servo 
valve, which could lead to tire failure during high speed/high energy 
braking and possible subsequent runway departure.

DATES: This AD becomes effective July 29, 2005.
    The incorporation by reference of certain publications listed in 
the AD is approved by the Director of the Federal Register as of July 
29, 2005.

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).
    Docket: The AD docket contains the proposed AD, comments, and any 
final disposition. You can 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 U.S. 
Department of Transportation, 400 Seventh Street SW., room PL-401, 
Washington, DC. This docket number is FAA-2004-19867; the directorate 
identifier for this docket is 2004-NM-58-AD.

FOR FURTHER INFORMATION CONTACT: Cheyenne Del Carmen, Aerospace 
Engineer, Cabin Safety, Mechanical & Environmental Branch, ANM-150L, 
FAA, Los Angeles Aircraft Certification Office, 3960 Paramount 
Boulevard, Lakewood, California 90712-4137; telephone (562) 627-5338; 
fax (562) 627-5210.

SUPPLEMENTARY INFORMATION: The FAA proposed to amend 14 CFR part 39 
with an AD for all McDonnell Douglas Model MD-90-30 airplanes. That 
action, published in the Federal Register on December 16, 2004 (69 FR 
75277), proposed to require replacing existing dual anti-skid control 
manifolds (DACM) with new, improved or reworked and reidentified DACMs; 
inspecting the inlet filters and other components of the DACMs for 
damage; replacing any damaged DACM components with new or serviceable 
components; and flushing/cleaning the braking system prior to replacing 
the inlet filters.

Comments

    We provided the public the opportunity to participate in the 
development of this AD. No comments have been submitted on the proposed 
AD or on the determination of the cost to the public.

Explanation of Change in the Service Information Citations

    We have changed the name of the manufacturer shown in the service 
bulletins cited in the final rule to conform to the Office of the 
Federal Register requirements for materials incorporated by reference 
in ADs.

Conclusion

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

Costs of Compliance

    This AD will affect about 115 airplanes worldwide and 24 airplanes 
of U.S. registry. The required actions will take about 8 work hours per 
airplane, at an average labor rate of $65 per work hour. Required parts 
will cost between $8,000 and $240,780 per airplane. Based on these 
figures, the estimated cost of the AD for U.S. operators is between 
$204,480 and $5,791,200, or between $8,520 and $241,300 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

[[Page 36480]]

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

2005-13-14 McDonnell Douglas: Amendment 39-14151. Docket No. FAA-
2004-19867; Directorate Identifier 2004-NM-58-AD.

Effective Date

    (a) This AD becomes effective July 29, 2005.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to all McDonnell Douglas Model MD-90-30 
airplanes, certificated in any category.

Unsafe Condition

    (d) This AD was prompted by reports of multiple incidents of 
blown tires on landing while using maximum autobrake. We are issuing 
this AD to prevent metallic fibers from the first stage filter of 
the servo valves inside the dual anti-skid control manifolds (DACM) 
from becoming lodged in the first stage nozzle of the servo valve, 
which could lead to tire failure during high speed/high energy 
braking and possible subsequent runway departure.

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.

Replacement of DACMs

    (f) Within 18 months after the effective date of this AD, 
replace existing DACMs with new, improved or reworked and 
reidentified DACMs, part number 6006079-2, by doing all actions in 
accordance with the Accomplishment Instructions of Boeing Service 
Bulletin MD90-32-056, dated October 7, 2003.

    Note 1: Boeing Service Bulletin MD90-32-056 refers to Aircraft 
Braking Systems Corporation (ABSC) Service Bulletin MD-90 6006079-
32-02, dated August 7, 2003, as an additional source of service 
information for installing new, improved or reworked and 
reidentified DACMs.

Concurrent Service Bulletin

    (g) Prior to or concurrently with the accomplishment of 
paragraph (f) of this AD, perform paragraphs (g)(1) and (g)(2) of 
this AD in accordance with the Accomplishment Instructions of Boeing 
Service Bulletin MD90-32-043, Revision 01, dated November 9, 2000.
    (1) Perform a detailed inspection of the metered pressure inlet 
filters and other components of the DACM for damage. Replace any 
damaged DACM components with new or serviceable components, and 
flush/clean the braking system, as applicable.
    (2) Replace the metered pressure inlet filters of the DACM 
assembly with new filters.

    Note 2: Boeing Service Bulletin MD90-32-043, Revision 01, refers 
to ABSC Service Bulletin MD90-32-12, dated January 12, 2000, as an 
additional source of service information for inspecting the 
components of the DACM assembly for uncleanliness, structural damage 
or excessive wear that may render the DACM inoperable, and for 
replacing those components with new or serviceable components, if 
necessary.


    Note 3: For the purposes of this AD, a detailed inspection is 
``an intensive examination of a specific item, installation, or 
assembly to detect damage, failure, or irregularity. Available 
lighting is normally supplemented with a direct source of good 
lighting at an intensity deemed appropriate. Inspection aids such as 
mirror, magnifying lenses, etc., may be necessary. Surface cleaning 
and elaborate procedures may be required.''

Prior Inspection/Replacement of Inlet Filters

    (h) Inspecting and replacing DACM inlet filters and flushing/
cleaning braking systems before the effective date of this AD in 
accordance with Boeing Service Bulletin MD90-32-043, dated April 10, 
2000, is considered acceptable for compliance with the corresponding 
actions specified in this AD.

Alternative Methods of Compliance (AMOCs)

    (i) The Manager, Los Angeles Aircraft Certification Office, FAA, 
has the authority to approve AMOCs for this AD, if requested using 
the procedures found in 14 CFR 39.19.

Material Incorporated by Reference

    (j) You must use Boeing Service Bulletin MD90-32-056, dated 
October 7, 2003; and Boeing Service Bulletin MD90-32-043, Revision 
01, dated November 9, 2000; as applicable; to perform the actions 
that are required by this AD, unless the AD specifies otherwise. The 
Director of the Federal Register approves the incorporation by 
reference of these documents in accordance with 5 U.S.C. 552(a) and 
1 CFR part 51. To get copies of the service information, contact 
Boeing Commercial Airplanes, Long Beach Division, 3855 Lakewood 
Boulevard, Long Beach, California 90846, Attention: Data and Service 
Management, Dept. C1-L5A (D800-0024). To view the AD docket, go to 
the Docket Management Facility, U.S. Department of Transportation, 
400 Seventh Street SW., room PL-401, Nassif Building, Washington, 
DC. To review copies of the service information, go to 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 13, 2005.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 05-12313 Filed 6-23-05; 8:45 am]
BILLING CODE 4910-13-P

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