# AD 91-10-08: Electrical Connectors - Type: Airworthiness directive - Status: Current - Products: Boeing DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87) and MD-88 - Effective: June 11, 1991 - Superseded by: Nothing supersedes this AD - Product type: Aircraft, Large airplane - Amendment: 39-6990 - Docket: 90-NM-256-AD - Registered aircraft: 100 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/30C19188035F2E0186256A080064B431.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/91-10-08 ## The airworthiness directive 91-10-08 MCDONNELL DOUGLAS: Amendment 39-6990. Docket No. 90-NM-256-AD. Applicability: McDonnell Douglas Model DC-9-81, -82, -83, and -87 series airplanes, and MD-88 airplanes, fuselage Numbers 909 through 1825, certificated in any category. Compliance: Required as indicated, unless previously accomplished. To eliminate a potential fire ignition source in the forward cabin ceiling panel area, accomplish the following: A. Within 90 days after the effective date of this AD, inspect the electrical connectors located above the forward cabin ceiling panel for damage in accordance with Paragraph B. of the "Accomplishment Instructions" of McDonnell Douglas Alert Service Bulletin A33-92, dated October 22, 1990 (hereinafter referred to as "The Service Bulletin"). 1. If damage is found, prior to further flight, modify the connectors and wires in accordance with Paragraph B, Condition I, of the "Accomplishment Instructions" in the Service Bulletin. 2. If nodamage is found, reinstall the connectors and reinspect the connectors in accordance with paragraph A. of this AD at intervals not to exceed 6 months. B. Within 2 years after the effective date of this AD, modify the connectors in accordance with Paragraph B, Condition I or Condition II, Option 2, of the Service Bulletin. Accomplishment of these modifications constitutes terminating action for the repetitive inspections required by paragraph A. of this AD. C. An alternative method of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Los Angeles Aircraft Certification Office (ACO), FAA, Transport Airplane Directorate. NOTE: The request should be forwarded through an FAA Principal Maintenance Inspector, who may concur or comment and then send it to the Manager, Los Angeles ACO. D. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes toa base in order to comply with the requirements of this AD. All persons affected by this directive who have not already received the appropriate service documents from the manufacturer may obtain copies upon request to McDonnell Douglas Corporation, 3855 Lakewood Boulevard, Long Beach, California 90846; ATTN: Business Unit Manager, Technical Publications C1-HCW (54-60). These documents may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 1601 Lind Avenue S.W., Renton, Washington, or the Los Angeles Aircraft Certification Office, 3229 East Spring Street, Long Beach, California. This amendment (39-6990, AD 91-10-08) becomes effective on June 11, 1991. ## Affected data sheets (1) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS A6WE](https://openairdocs.org/tcds/A6WE): The Boeing Company; names 5 of 25 models: MD-88, DC-9-81 (MD-81), DC-9-83 (MD-83), DC-9-87 (MD-87), DC-9-82 (MD-82) ## Registered aircraft it may apply to (OpenAirDocs) Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment. - Aircraft: 100 (100 by airframe model, 0 by engine model) - Makers: Mcdonnell Douglas 99, Douglas 1 Models with the most aircraft: - [Mcdonnell Douglas DC-9-83(MD-83)](https://openairdocs.org/model/mcdonnell-douglas-dc-9-83-md-83): 49 aircraft (airframe model) - [Mcdonnell Douglas DC-9-82(MD-82)](https://openairdocs.org/model/mcdonnell-douglas-dc-9-82-md-82): 22 aircraft (airframe model) - [Mcdonnell Douglas MD-88](https://openairdocs.org/model/mcdonnell-douglas-md-88): 14 aircraft (airframe model) - [Mcdonnell Douglas DC-9-87](https://openairdocs.org/model/mcdonnell-douglas-dc-9-87): 13 aircraft (airframe model) - [Douglas DC-9-83](https://openairdocs.org/model/douglas-dc-9-83): 1 aircraft (airframe model) - [Mcdonnell Douglas DC-9-87 (MD-87)](https://openairdocs.org/model/mcdonnell-douglas-dc-9-87-md-87): 1 aircraft (airframe model) All 7 models: https://openairdocs.org/ad/91-10-08/models.md Every aircraft: https://openairdocs.org/ad/91-10-08/aircraft.md Its text cites no advisory circulars or STCs. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.