# AD 47-49-07: Drag Link Bolt Replacement

- Type: Airworthiness directive
- Status: Current
- Products: Lockheed 49-46
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Registered aircraft: 1 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/CE90DEAB2FFCE9BE8625696D004594E8.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/47-49-07

## The airworthiness directive

47-49-07 LOCKHEED: (Was Mandatory Note 40 of AD-763-3.) Applies to All Model 49 Serials Up to and Including 2088, Unless Equipped With MLG Drag Strut Dampers.

Compliance required prior to February 1, 1948.

  (a) Replace the NAS 58A65 bolt used to connect the two halves of each MLG upper drag link assembly, LAC P/N 283418 and 288983, with a 5/8-inch diameter high strength bolt, LAC P/N 297902.

(LAC Service Bulletin 49/SB-368 covers installation of MLG shock strut dampers.)

  (b) Reduce MLG shock strut inflation pressures to provide a static extension of 2 inches at maximum landing weight.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A-763](https://openairdocs.org/tcds/A-763): Lockheed Martin Aeronautics Company; names 1 of 6 models: 49-46

## 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: 1 (1 by airframe model, 0 by engine model)
- Makers: Lockheed 1

Models with the most aircraft:

- [Lockheed 49-46](https://openairdocs.org/model/lockheed-49-46): 1 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/47-49-07/models.md
Every aircraft: https://openairdocs.org/ad/47-49-07/aircraft.md

Its text cites no advisory circulars or STCs.

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