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Dek Regulatory System

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§3.431 Multiengine fuel system ar.

CAR 3 (Reissue) · Arrangement · Powerplant Installations – Reciprocating Engines · at CAR3R-8 (current)

Text in force at CAR3R-8: from CAR3R-5, effective 1 Oct 1959. OCR text

rangement. 2s * * * s (b) If multiengine aircraft employ a single fuel tank or series of fuel ta’ interconnected to function as a &il fuel tank, the following provisions sh. apply; IRipAeeepRBOmeeon+eneros erIbetenadeog Seaeaea (1) Independent tank outlets to each engine. Each outlet shall incorporate a shutoff valve at the tank. This valve may also serve as the fire wall shutoff valve required by § 3.551 provided the line between the valve and the engine compartment does not contain a hazardous amount of fuel which can drain into the engine compartment. (2) At least two vents arranged to minimize the possibility of both vents becoming obstructed simultaneously. (3) Filler cap(s) designed to minimize the possibility of incorrect installation or loss in flight. (4) The remainder of the fuel system from the tank outlet to the engine shall be entirely independent of any portion of the system supplying fuel to the other engine(s). 12, By amending § 3.551(b) to read as follows:

(Secs. 313(a), 601, 608, 72 Stat. 752, 775, 776; 49 U.S.C. 1354(a), 1421, 1423) ·

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