# AD 87-25-52: Brake/Anti-Skid Control

- Type: Airworthiness directive
- Status: Current
- Products: Boeing DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83) and DC-9-87 (MD-87)
- Effective: March 7, 1988
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Amendment: 39-5843
- Registered aircraft: 86 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/2DE6D346FD0F9C9E862569F2006D87AB.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/87-25-52

## The airworthiness directive

87-25-52 MCDONNELL DOUGLAS: Amendment 39-5843. Applies to McDonnell Douglas Model DC-9-81, -82, -83, and -87 series airplanes, as listed in McDonnell Douglas Alert Service Bulletin A32-222, dated December 10, 1987, certificated in any category. Compliance required as indicated, unless previously accomplished.

To eliminate the potential for decreased braking performance or loss of braking capability during landing or rejected takeoff, accomplish the following:

A. Within 10 days after the effective date of this AD, inspect the Brake/Anti-Skid Control Unit in accordance with Paragraph B of the Accomplishment Instructions of McDonnell Douglas Alert Service Bulletin A32-222, dated December 10, 1987, or later revision approved by the Manager, Los Angeles Aircraft Certification Office, FAA, Northwest Mountain Region. If correct Brake/Anti-Skid Control Unit is installed, no further action is necessary.

B. If incorrect Brake/Anti-Skid Control Unit is installed, before further flight, remove the incorrect anti-skid control unit, reconfigure the keying rack and electrical connector, and install the correct anti-skid control unit, in accordance with Paragraphs D, E, and F of the Accomplishment Instructions of McDonnell Douglas Alert Service Bulletin A32-222, dated December 10, 1987, or later revision approved by the Manager, Los Angeles Aircraft Certification Office, FAA, Northwest Mountain Region.

C. Alternate means of compliance which provide an equivalent level of safety may be used when approved by the Manager, Los Angeles Aircraft Certification Office, FAA, Northwest Mountain Region.

D. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base in order to comply with inspection 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 the McDonnell Douglas Corporation, 3855 Lakewood Boulevard, Long Beach, California 90846, Attention: Director of Publications, C1-L00 (54-60). These documents may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington or the Los Angeles Aircraft Certification Office, 4344 Donald Douglas Drive, Long Beach, California.

This AD was effective earlier to all recipients of telegraphic AD T87-25-52, issued December 11, 1987.

This amendment 39-5843 becomes effective March 7, 1988.

## 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 4 of 25 models: 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: 86 (86 by airframe model, 0 by engine model)
- Makers: Mcdonnell Douglas 85, 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 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 5 models: https://openairdocs.org/ad/87-25-52/models.md
Every aircraft: https://openairdocs.org/ad/87-25-52/aircraft.md

Its text cites no advisory circulars or STCs.

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