# AD 83-06-02: Fire Extinguishing Agent

- 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: April 4, 1983
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Amendment: 39-4588
- Registered aircraft: 86 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C2D02E0C51489337862569F20069DB39.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/83-06-02

## The airworthiness directive

83-06-02 MCDONNELL DOUGLAS: Amendment 39-4588. Applies to McDonnell Douglas Model DC-9-80 series airplanes fuselage numbers through 1086, certificated in all categories. Compliance required as indicated, unless previously accomplished.

To prevent possible discharge of fire extinguishing agent into an unselected area, accomplish the following within 300 flight hours time in service after the effective date of this AD:

A. Inspect for proper installation of electrical connection of plugs P1-70, P1-71, and P1-72 to Firex bottle No.1 and plugs P1-73, P1-74, and P1-75 to Firex bottle No. 2 and inspect for proper clamping method and correct if necessary, in accordance with McDonnell Douglas DC-9-80 Alert Service Bulletin A26-13, dated February 2, 1983, or Revision 1, dated February 3, 1983, or later revisions approved by the Manager, Los Angeles Aircraft Certification Office, FAA, Northwest Mountain Region.

B. 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 the requirements of this AD.

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.

All persons affected by this directive who have not already received these documents from the manufacturer may obtain copies upon request to McDonnell Douglas Corporation, 3855 Lakewood Boulevard, Long Beach, California 90846, Attention: Director, Publications and Training, C1-750 (54-60). These documents also may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or at the Los Angeles Aircraft Certification Office, 4344 Donald Douglas Drive, Long Beach, California.

This amendment becomes effective April 4, 1983.

## 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/83-06-02/models.md
Every aircraft: https://openairdocs.org/ad/83-06-02/aircraft.md

Its text cites no advisory circulars or STCs.

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