# AD 51-25-02: Circuit Breaker Cover

- 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- Superseded by: Nothing supersedes this AD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/279BDB1C9D3CC2318625698A007311ED.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/51-25-02

## The airworthiness directive

51-25-02 MARTIN: Applies to All Models 202 and 202A Airplanes.

Compliance required by January 1, 1952.

Install cover over D7231-125 inverter remote reset circuit breaker terminals to prevent inadvertent shorting between "MAIN" and "CONTROL" terminals. Compliance may be made in same manner or equivalent to Martin Service Instruction Letter No. 8 dated September 10, 1951.

This supersedes the first item in AD 51-11-01 requiring the redesign of the d.c. input circuit breaker mounting.

## 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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