AD 51-04-01

Airworthiness directive · Fuel Vent Line Check Valve · Martin-Marietta 202

Model
202
Data sheet
TCDSA-795
Product
Aircraft · Large airplane

Unofficial copy of the text in the FAA’s Dynamic Regulatory System. The FAA’s own copy is the authoritative one. DRS record last changed May 30, 2024.

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The airworthiness directive

51-04-01 MARTIN: Applies to All Model 202 Aircraft.

Compliance required not later than April 1, 1951.

In order to eliminate a fire hazard due to the possibility of flow from the tank to the engine compartment in case of the failure of the carburetor vapor vent return line, install a swing type check valve at each fuel tank where the vapor vent line attaches to the tank so that flow can take place only toward the fuel tank.

(Martin Service Bulletin No. 138, dated November 30, 1950, covers this same subject.)

Affected TCDS · 1

The type certificate data sheets for the models this AD names, matched by model and maker.

Registered aircraft

No registered aircraft matched this AD’s modelsForeign aircraft aren’t included, and ADs on propellers and appliances aren’t matched by model.