Airworthiness directives › 2001-24-25
AD 2001-24-25 Airworthiness Directives; McDonnell Douglas Model DC-9-10, -20, -30, and -40 Series Airplanes and C-9 Airplanes
Models named: DC-9-10, -20, -30, -40 series. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
Model DC-9-10, -20, -30, and -40 series airplanes, and C-9 airplanes, as listed in Boeing Alert Service Bulletin DC9-27A147, Revision 03, dated May 8, 2001; certificated in any category. Note 1: This AD applies to each airplane identified in the preceding applicability provision, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of this AD. For airplanes that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must request approval for an alternative method of compliance in accordance with paragraph (c) of this AD. The request should include an assessment of the effect of the modification, alteration, or repair on the unsafe condition addressed by this AD; and, if the unsafe condition has not been eliminated, the request should include specific proposed actions to address it.
Compliance
Required as indicated, unless accomplished previously. To prevent smoke/fire in the flight compartment in the event that the automatic spoiler actuator overheats, and/or loss of the spoiler control system, which could significantly reduce the braking effectiveness of the airplane; accomplish the following: Modification of the Spoiler Control System (a) Within 18 months after the effective date of this AD, modify the spoiler control system by accomplishing all actions specified in the Accomplishment Instructions of Boeing Alert Service Bulletin DC9-27A147, Revision 03, dated May 8, 2001, per the service bulletin. Note 2: Modification per McDonnell Douglas Service Bulletin DC9-27-147, dated January 7, 1972; Revision 1, dated July 30, 1974; or Revision 2, dated May 9, 1975; before the effective date of this AD; is considered acceptable for compliance with paragraph (a) of this AD. Installation of Protective Interlock Box Assemblies (b) Prior to or in conjunction with the requirements of paragraph (a) of this AD, install protective interlock box assemblies in the spoiler circuit, per McDonnell Douglas DC-9 Service Bulletin 27-103, dated March 19, 1968. Alternative Methods of Compliance (c) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Los Angeles Aircraft Certification Office (ACO), FAA. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Los Angeles ACO. Note 3: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Los Angeles ACO. Special Flight Permit (d) Special flight permits may be issued in accordance with sections 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199) to operate the airplane to a location where the requirements of this AD can be accomplished. Incorporation by Reference (e) The actions shall be done in accordance with Boeing Alert Service Bulletin DC9-27A147, Revision 03, dated May 8, 2001, and McDonnell Douglas DC-9 Service Bulletin 27-103, dated March 19, 1968; as applicable. This incorporation by reference was approved previously by the Director of the Federal Register as of January 16, 2002 (66 FR 64114, December 12, 2001). Copies may be obtained from Boeing Commercial Aircraft Group, Long Beach Division, 3855 Lakewood Boulevard, Long Beach, California 90846, Attention: Data and Service Management, Dept. C1-L5A (D800-0024). Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the FAA, Los Angeles Aircraft Certification Office, 3960 Paramount Boulevard, Lakewood, California; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC. Effective Date (f) The effective date of this amendment remains January 16, 2002. Issued in Renton, Washington, on December 20, 2001. Ali Bahrami, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 02-86 Filed 1-3-02; 8:45 am] BILLING CODE 4910-13-U
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1