# AD 89-13-07: Wheel Assembly

- Type: Airworthiness directive
- Status: Current
- Products: Boeing DC-9-81 (MD-81), DC-9-82 (MD-82) and DC-9-87 (MD-87)
- Effective: July 24, 1989
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Amendment: 39-6239
- Registered aircraft: 36 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B4521349A629E7E6862569F2006F6C52.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/89-13-07

## The airworthiness directive

89-13-07 McDONNELL DOUGLAS: Amendment 39-6239.

Applicability: Model DC-9-81, -82, and -87 series airplanes, equipped with Loral Aircraft Braking Systems main landing gear wheels, Part Number 5004320-2, -3, -4, -5, -6, and -7, certificated in any category.

Compliance: Required as indicated, unless previously accomplished.

To prevent wheel failure, accomplish the following:

A. Prior to the accumulation of 2,000 landings on the wheel or within the next 350 landings after the effective date of this AD, whichever occurs later, unless the wheel was inspected within the last 700 landings, inspect the wheel assembly for cracks in accordance with Loral Service Bulletin MD 81-32-1, MD-82-32-1, and MD-87-32-1, Revision 1, dated November 15, 1988.

1. If no cracks are found, replace the key boss screws in accordance with the Loral Service Bulletin.

2. If crack(s) are found, replace the wheel before further flight.

B. Within 90 days after the effective dateof this AD, revise the FAA-approved maintenance program to include inspection of the wheel assembly, and replacement, if necessary, as specified in paragraph A., above, at every fourth tire change or every 1,500 landings, whichever occurs first.

C. 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 Aircraft Certification Office, FAA, Northwest Mountain Region.

NOTE: The request should be forwarded through an FAA Principal Maintenance Inspector (PMI), who will either concur or comment and then send it to the Manager, Los Angeles Aircraft Certification Office.

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 the requirements of this AD.

All persons affected by this directive who have not already received the appropriate service documents from the manufacturer mayobtain copies upon request to Loral Aircraft Braking Systems, 1204 Massillon Road, Akron, Ohio 44306-4186, Attention: Manager of Product Integrity, Mr. J. B. Wright. These documents may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 17900 Pacific Highway South, Seattle, Washington, or the Los Angeles Aircraft Certification Office, 3229 East Spring Street, Long Beach, California.

This amendment (39-6239, AD 89-13-07) becomes effective on July 24, 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 3 of 25 models: DC-9-81 (MD-81), 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: 36 (36 by airframe model, 0 by engine model)
- Makers: Mcdonnell Douglas 36

Models with the most aircraft:

- [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-9-87 (MD-87)](https://openairdocs.org/model/mcdonnell-douglas-dc-9-87-md-87): 1 aircraft (airframe model)

All 3 models: https://openairdocs.org/ad/89-13-07/models.md
Every aircraft: https://openairdocs.org/ad/89-13-07/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.