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Airworthiness directives › 98-20-21

AD 98-20-21 Airworthiness Directives; McDonnell Douglas Model DC-9-80 Series Airplanes Equipped With Heath Tecna Aerospace Extended Spacial Concept Interior III Installed in Accordance With Supplemental Type Certificate SA4744NM

1998-10-27
1998-09-22
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Airframe
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Models named: DC-9-80 series. Read the applicability below — it usually turns on serial or part numbers too.

Applicability*9

Model DC-9-80 series airplanes, equipped with Heath Tecna Aerospace Extended Spacial Concept Interior III installed in accordance with Revision A, dated March 7, 1989, or Revision B, dated February 16, 1990, of Heath Tecna Drawing List HPD-DL-34, as approved under Supplemental Type Certificate SA4744NM; certificated in any category. This AD does not apply to airplanes on which Heath Tecna Aerospace Extended Spacial Concept Interior III was installed in accordance with Revision C, dated October 27, 1997, of Heath Tecna Drawing List HPD-DL-34. Note 1: This AD applies to each airplane identified in the preceding applicability provision, regardless of whether it has been otherwise 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 (b) 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 failures of the electrical connectors, which could result in poor socket/pin contact, excessive heat, electrical arcing, and consequently, connector burnthrough and smoke in the passenger cabin, accomplish the following: (a) Within 12 months after the effective date of this AD, accomplish paragraph (a)(1) [[Page 50516]] and (a)(2) of this AD, in accordance with Heath Tecna Service Bulletin H0655-33-01, dated March 28, 1996. (1) Perform a visual inspection to detect discrepancies (i.e., damage, burn marks, and black or brown discoloration) of the electrical plugs and receptacles of the sidewall lighting system in the passenger cabin, and to verify that the ends of all pins and sockets are even and that they are seated and locked into place, in accordance with the service bulletin. If any discrepancy is detected, prior to further flight, replace the discrepant part with a new part in accordance with the service bulletin. (2) Modify the electrical wiring and connectors of the sidewall lighting system in the passenger cabin in accordance with paragraph 2.H. of the Accomplishment Instructions of the service bulletin. (b) 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, Seattle Aircraft Certification Office (ACO), FAA, Transport Airplane Directorate. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Seattle ACO. Note 2: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Seattle ACO. (c) 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. (d) The actions shall be done in accordance with Heath Tecna Service Bulletin H0655-33-01, dated March 28, 1996. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be obtained from Hexcel Interiors (formerly Heath Tecna Aerospace), 3225 Woburn Street, Bellingham, Washington 98226. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC. (e) This amendment becomes effective on October 27, 1998. Issued in Renton, Washington, on September 15, 1998. Darrell M. Pederson, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 98-25145 Filed 9-21-98; 8:45 am] BILLING CODE 4910-13-U

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