# AD 47-10-36: Wing Leading Edge Rework

- 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- Superseded by: Nothing supersedes this AD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/31C8A1D9E927595B8625696D00458FE6.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/47-10-36

## The airworthiness directive

47-10-36 LOCKHEED: (Was Service Note 7 of AD-763-3.) Applies to All Model 49 Serial Numbers Up to and Including 2088.

Between the edges of the inboard and outboard nacelle attach angles, the rivets used to attach the leading edge lower skin to the front beam should be inspected for looseness at periods not to exceed 200 hours of operation. When loose rivets are found the following corrective action should be taken:

Add stiffener to lower surface of leading edge skin between Stations 287 and 299, install 5/32-inch rivets in place of existing 1/8-inch rivets used to attach lower leading edge skin to front beam between Station 287 and outboard nacelle, and install six 10-32 screws in place of six rivets in this same rivet line (two each at Stations 263, 287, and 312). After this rework has been accomplished, no further periodic inspections will be required.

(LAC Service Instruction 49/SI-121 covers this wing leading edge reinforcement and rivet replacement.)

## 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/47-10-36/models.md
Every aircraft: https://openairdocs.org/ad/47-10-36/aircraft.md

Its text cites no advisory circulars or STCs.

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