# AD 47-10-28: Elevator Cable Seal Holes

- 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- Superseded by: Nothing supersedes this AD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/E613174C908F14258625696D0071A17E.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/47-10-28

## The airworthiness directive

47-10-28 LOCKHEED: (Was Mandatory Note 31 of AD-763-3.) Applies to All Model 49 Serials Up to and Including 2088.

Compliance required prior to July 1, 1947.

Enlarge holes in elevator cable seals in aft pressure bulkhead to 0.19 + 0.031-inch diameter.

(LAC Service Bulletin 49/SB-208 covers this same subject.)

## 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/47-10-28/models.md
Every aircraft: https://openairdocs.org/ad/47-10-28/aircraft.md

Its text cites no advisory circulars or STCs.

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