# AD 74-24-04: Lower Center Wing

- Type: Airworthiness directive
- Status: Current
- Products: Lockheed Martin 382, 382B, 382E, 382F and 382G
- Effective: November 20, 1974
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Amendment: 39-2015
- Registered aircraft: 6 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DEDFF05E4B84A7FD862569750048A555.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/74-24-04

## The airworthiness directive

74-24-04 LOCKHEED: Amendment 39-2015. Applies to all Model 382 series airplanes, Serial Numbers 3946 and 4101 through 4298, certificated in all categories, except those airplanes which have been modified in accordance with STC ST441SO, or equivalent.

Compliance required within the next 200 hours' time in service after the effective date of this AD, unless already accomplished.

To prevent cracks in the lower center wing section, modify the wing in accordance with Lockheed Service Bulletin 382-121, or later FAA approved revision, or an equivalent approved by the Chief, Engineering and Manufacturing Branch, FAA, Southern Region.

This amendment becomes effective November 20, 1974.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A1SO](https://openairdocs.org/tcds/A1SO): Lockheed Martin Corporation; names 5 of 6 models: 382F, 382, 382E, 382B, 382G

## 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: 6 (6 by airframe model, 0 by engine model)
- Makers: Lockheed 6

Models with the most aircraft:

- [Lockheed 382G](https://openairdocs.org/model/lockheed-382g): 5 aircraft (airframe model)
- [Lockheed 382 44C (C130K)](https://openairdocs.org/model/lockheed-382-44c-c130k): 1 aircraft (airframe model)

All 2 models: https://openairdocs.org/ad/74-24-04/models.md
Every aircraft: https://openairdocs.org/ad/74-24-04/aircraft.md

## Related documents

- [STC ST441SO](https://openairdocs.org/stc/ST441SO): Installation of a modified center and outer wing.. Lockheed Martin Aeronautics Company, Named in the applicability

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