# AD 52-04-04: Lighting Circuit Protection

- Type: Airworthiness directive
- Status: Current
- Products: Martin-Marietta 202 and 202A
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5013AF482E6C626A86256A32005735BE.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/52-04-04

## The airworthiness directive

52-04-04 MARTIN: Applies to All Models 202 and 202A Aircraft.

Compliance required not later than July 1, 1952.

Provide two separate and individually protected circuits for instrument panel lighting- each circuit to provide adequate panel illumination for necessary flight instruments.

(G. L. Martin Co. Service Bulletin 118 and Trans World Airlines Engineering Order 5643 cover this same subject for the 202A).

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A-795](https://openairdocs.org/tcds/A-795): Martin-Marietta Corporation; names 2 of 2 models: 202A, 202

## Registered aircraft it may apply to (OpenAirDocs)

No registered aircraft matched the models it names.

Its text cites no advisory circulars or STCs.

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