AD 2003-17-07 R1

AD Final Rules - 2003-17-07 R1.pdf
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AD Number:
2003-17-07 R1
Document Type:
AD Final Rules
Docket Number:
FAA-2005-20881
Subject Heading:
Airworthiness Directives; Various Transport Category Airplanes Manufactured by McDonnell Douglas
Subject:
Auxiliary power unit (APU)
Status:
Current
Citation:
(Federal Register: October 3, 2005 (Volume 70, Number 190))
Citation Publish Date:
10/03/2005
Effective Date:
09/24/2003
Make:
The Boeing Company
Model:
DC-10-10 | DC-10-10F | DC-10-15 | DC-10-30 | DC-10-30F (KC-10A, KDC-10) | DC-10-40 | DC-10-40F | DC-8-11 ...Show more
Product Type:
Aircraft
Product Subtype:
Large Airplane
Affected AD:
Superseded AD:
2003-17-07
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
CORRECTION: On the first line of the regulatory portion of this AD, we failed to list the manufacturer (McDonnell Douglas). There will be a correction... ...Show more
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1


[Federal Register: October 3, 2005 (Volume 70, Number 190)]


[Rules and Regulations]


[Page 57491-57493]


From the Federal Register Online via GPO Access [wais.access.gpo.gov]


[DOCID:fr03oc05-4]


–––––––––––––––––––––––––––––––––––


DEPARTMENT OF TRANSPORTATION


Federal Aviation Administration


14 CFR Part 39


[Docket No. FAA-2005-20881; Directorate Identifier 2004-NM-253-AD; Amendment 39-14302;


AD 2003-17-07 R1]


RIN 2120-AA64


Airworthiness Directives; Various Transport Category Airplanes Manufactured by McDonnell


Douglas


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


ACTION:
 
Final rule.


–––––––––––––––––––––––––––––––––––


SUMMARY:
 
The FAA is revising an existing airworthiness directive (AD) that applies to various


transport category airplanes manufactured by McDonnell Douglas. We issued that AD to require a


one-time test of the fire extinguishers for the engine and auxiliary power unit (APU), as applicable, to


determine the capability of the Firex electrical circuits to fire discharge cartridges, and


troubleshooting actions if necessary. This new AD removes certain transport category airplanes from


the applicability of the existing AD. This AD results from reports indicating that fire extinguishers


for the engine and auxiliary power unit had failed to discharge when commanded. We are issuing this


AD to prevent failure of the fire extinguishers to fire discharge cartridges, which could result in the


inability to put out a fire in an engine or in the APU.


DATES:
 
The effective date of this AD is September 24, 2003.


On September 24, 2003 (68 FR 50058, August 20, 2003), the Director of the Federal Register


approved the incorporation by reference of certain service bulletins listed in the AD.


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.
2


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 proposed to amend part 39 of the Federal Aviation Regulations (14 CFR part 39) with


an airworthiness directive (AD) to revise AD 2003-17-07, amendment 39-13281 (68 FR 50058,


August 20, 2003). The existing AD applies to various transport category airplanes manufactured by


McDonnell Douglas. The proposed AD was published in the Federal Register on April 11, 2005 (70


FR 18324) to require a one-time test of the fire extinguishers for the engine and auxiliary power unit


(APU), as applicable, to determine the capability of the Firex electrical circuits to fire discharge


cartridges, and troubleshooting actions if necessary. That action also proposed to remove Model MD-


10-10F and MD-10-30F airplanes from the applicability of the existing AD.


Comments


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


considered the comments received.


No Objections to the NPRM


One commenter states that it has no objection to the NPRM.


Request To Give Credit for Previous Alternative Methods of Compliance (AMOCs)


This same commenter notes that it has received an AMOC with AD 2003-17-07. We infer that


the commenter is requesting that credit be given for compliance with the AD in accordance with the


AMOC.


We acknowledge that the AMOC the commenter received provides compliance with AD 2003-


17-07. However, it is unnecessary to amend this revised AD to reflect credit for previous


accomplishment of the one-time test of the fire extinguishers for the engine and auxiliary power unit


(APU), as applicable. This revised AD merely reduces the applicability of the AD, and all of the


previous requirements, conditions, and provisions remain in effect.


Request To Revise Note 1


One commenter requests that we revise a typographical error in Note 1 of the proposed AD,


which referred to paragraph (c) as the AMOC paragraph. We agree with the commenter, and have


revised Note 1 to refer to paragraph (h) of the AD for AMOCs.


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 change described previously.