# AD 84-03-52 R1: MLG Doors, Latches, Shields

- 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: June 4, 1984
- Amendment: 39-4869
- Data sheets: TCDS A6WE
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A7E7083D24B6ABEF862569F2006A3ADF.0001
- Page: https://openairdocs.org/ad/84-03-52-R1

## The airworthiness directive

84-03-52 R1 McDONNELL DOUGLAS: Amendment 39-4869. Applies to McDonnell Douglas Model DC-9 and Military C-9 series airplanes, certificated in all categories. Compliance required as indicated, unless previously accomplished.

To prevent degradation of available roll control, possible loss of an engine at critical flight regime, and/or loss of normal MLG retraction/extension capability, accomplish the following, unless previously accomplished:

A. Within five (5) calendar days after the effective date of this AD:

1. Open left and right inboard MLG doors and install doorkeepers. (See Maintenance Manual, Chapter 32-00, paragraph entitled "General Maintenance Practice.")

2. Locate an area convenient to the secondary latch, P/N 9953874, or bracket, P/N 2919899-1, to install safety wire. Secure lateral control mixer shield assembly to adjacent structure (mixer assembly, P/N 5924667) with .032-inch or .040-inch inconel or stainless steel safety wire and verify the safety wiring installation.

3. Whenever the lateral control mixer shield has been opened, the shield shall, upon closing, be properly secured and safety wired with .032-inch or .040-inch inconel or stainless steel safety wire. The installation of the safety wire shall be verified by a representative of the operator and recorded in the aircraft records prior to further flight.

4. Remove doorkeepers and close left and right MLG doors.

B. 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.

NOTE: Removal of the mixer shields in accordance with McDonnell Douglas Service Bulletin 27-247, dated February 16, 1984, or later revision approved by the Manager, Los Angeles Aircraft Certification Office, FAA, Northwest Mountain Region, is an approved alternate means of compliance for the DC-9-10 through -80 and Military C-9 series airplanes.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 the Los Angeles Aircraft Certification Office, 4344 Donald Douglas Drive, Long Beach, California.

This amendment becomes effective June 4, 1984, and was effective earlier to those recipients of telegraphic AD T84-03-52 dated January 27, 1984.

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From OpenAirDocs.org, an independent open copy of FAA data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.