14 CFR § 121.235 - Fuel valves.

§ 121.235 Fuel valves.

Each fuel valve must -

(a) Comply with § 121.257;

(b) Have positive stops or suitable index provisions in the “on” and “off” positions; and

(c) Be supported so that loads resulting from its operation or from accelerated flight conditions are not transmitted to the lines connected to the valve.

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