# AD 61-01-02: MARTIN Models 202, 202A and 404 Aircraft

- Type: Airworthiness directive
- Status: Current
- Products: Martin-Marietta 202, 202A and 404
- Effective: January 6, 1961
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Registered aircraft: 5 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/40CF1A7EA90B38B486256A32005F8705.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/61-01-02

## The airworthiness directive

61-01-02 MARTIN: Amdt. 239 Part 507 Federal Register January 5, 1961. Applies to All Models 202, 202A and 404 Aircraft With Main Landing Gear Torque Arms Having More Than 12,000 Hours' Time In Service. Compliance required as indicated. Failures of Model 404 main landing gear torque arms have occurred in the lower attachment point where the torque scissors attach to the strut. Also, a failure was found in the apex (upper to lower torque arm attach point). As a result, the following must be accomplished within the next 225 hours' time in service, unless already accomplished within the last 225 hours' time in service, and every 450 hours' time in service thereafter. Inspect all surfaces of the torque arm lugs which attach the torque scissors to the strut for cracks or corrosion, using dye penetrant, ultrasonic or radiographic method, or FAA approved equivalent. Beginning with the first repetitive inspection, also inspect all surfaces of the torque arm apex using dye penetrant, ultrasonic or radiographic method, or FAA approved equivalent. Removal of bolts and bushings is required only if dye penetrant is used. If cracks or corrosion are found, the torque arm must be replaced before the next flight. This directive effective January 6, 1961.

## Affected data sheets (2) (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
- [TCDS 1A7](https://openairdocs.org/tcds/1A7): Martin-Marietta Corporation; names 1 of 1 models: 404

## 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: 5 (5 by airframe model, 0 by engine model)
- Makers: Martin 5

Models with the most aircraft:

- [Martin 404](https://openairdocs.org/model/martin-404): 5 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/61-01-02/models.md
Every aircraft: https://openairdocs.org/ad/61-01-02/aircraft.md

Its text cites no advisory circulars or STCs.

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