# AD 89-08-04: Spoiler Position System - Type: Airworthiness directive - Status: Current - Products: Boeing DC-9-11, DC-9-12, DC-9-13, DC-9-14, DC-9-15, DC-9-15F, DC-9-21, DC-9-31, DC-9-32, DC-9-32 (VC-9C), DC-9-32F, DC-9-32F (C-9A) and 10 more - Effective: May 4, 1989 - Superseded by: Nothing supersedes this AD - Product type: Aircraft, Large airplane - Amendment: 39-6179 - Registered aircraft: 99 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/334808340E519664862569F2006E8A55.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/89-08-04 ## The airworthiness directive 89-08-04 McDONNELL DOUGLAS: Amendment 39-6179. Applicability: Model DC-9, DC-9-80, and C-9 (Military) series airplanes, certificated in any category, as listed in McDonnell Douglas Model DC-9 Service Bulletin 27-173, Revision 1, dated May 20, 1982, and Service Bulletin 27-257, Revision 1, dated June 20, 1988. Compliance: Required within 12 months after the effective date of this airworthiness directive (AD), unless previously accomplished. To eliminate lateral control difficulties after liftoff during takeoff, accomplish the following: A. For McDonnell Douglas Model DC-9 and C-9 (Military) series airplanes, identified in McDonnell Douglas Model DC-9 Service Bulletin 27-173, Revision 1, dated May 20, 1982, and Service Bulletin 27-257, Revision 1, dated June 20, 1988: Install the Spoiler Position Sensing and Indication System and "spoiler deployed" annunciation takeoff inhibit feature in accordance with the accomplishment instructions of those service bulletins.B. For McDonnell Douglas Model DC-9-81, and DC-9-82, and DC-9-83 series airplanes identified in McDonnell Douglas Model DC-9 Service Bulletin 27-257, Revision 1, dated June 20, 1988: Install the spoiler deployed annunciation takeoff inhibit feature in accordance with the accomplishment instructions of that service bulletin. C. For all McDonnell Douglas Model DC-9-81, DC-9-82, and DC-9-83 airplanes with the production equivalent of McDonnell Douglas Model DC-9 Service Bulletin, 27-257, Revision, dated June 20, 1988, incorporated but presently de-activated: Re-activate the spoiler deployed annunciation takeoff inhibit feature in accordance with the airplane type design configuration. D. An alternate means 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 Certification Office, FAA, Northwest Mountain Region. NOTE: The request should be forwarded through an FAA Principal Maintenance Inspector (PMI), who may add any comments and then send it to the Manager, Los Angeles Aircraft Certification Office. E. Special flight permits may be used in accordance with FAR 21.197 and 21.199 to operate airplanes to a 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 information from the manufacturer may obtain copies upon request to the McDonnell Douglas Corporation, 3855 Lakewood Boulevard, Long Beach, California 90846, Attention: Director of Publications, C1-LOO (54-60). These documents may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or at 3229 East Spring Street, Long Beach, California. This amendment (39-6179, AD 89-08-04) becomes effective on May 4, 1989. ## 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 19 of 25 models: DC-9-12, DC-9-15F, DC-9-41, DC-9-13, DC-9-34F, DC-9-81 (MD-81), DC-9-33F, DC-9-83 (MD-83)… ## 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: 99 (99 by airframe model, 0 by engine model) - Makers: Mcdonnell Douglas 93, Douglas 6 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 DC-9-87](https://openairdocs.org/model/mcdonnell-douglas-dc-9-87): 13 aircraft (airframe model) - [Mcdonnell Douglas DC-9-15F](https://openairdocs.org/model/mcdonnell-douglas-dc-9-15f): 3 aircraft (airframe model) - [Mcdonnell Douglas DC-9-33F](https://openairdocs.org/model/mcdonnell-douglas-dc-9-33f): 3 aircraft (airframe model) - [Douglas DC-9-83](https://openairdocs.org/model/douglas-dc-9-83): 1 aircraft (airframe model) - [Douglas DC9-15](https://openairdocs.org/model/douglas-dc9-15): 1 aircraft (airframe model) - [Douglas DC-9-15F](https://openairdocs.org/model/douglas-dc-9-15f): 1 aircraft (airframe model) - [Douglas DC-9-21](https://openairdocs.org/model/douglas-dc-9-21): 1 aircraft (airframe model) - [Douglas DC-9-32F](https://openairdocs.org/model/douglas-dc-9-32f): 1 aircraft (airframe model) - [Mcdonnell Douglas DC-9-32](https://openairdocs.org/model/mcdonnell-douglas-dc-9-32): 1 aircraft (airframe model) - [Mcdonnell Douglas DC-9-32F](https://openairdocs.org/model/mcdonnell-douglas-dc-9-32f): 1 aircraft (airframe model) - [Douglas DC-9-33F](https://openairdocs.org/model/douglas-dc-9-33f): 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 14 models: https://openairdocs.org/ad/89-08-04/models.md Every aircraft: https://openairdocs.org/ad/89-08-04/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.