Fuel flow.

CFR · 2024-01-01 · US · Title 14

(a) (1) The fuel pressure, corrected for critical accelerations, must be within the limits specified by the engine type certificate data sheet. (2) The fuel level in the tank may not exceed that established as the unusable fuel supply for that tank under § 27.959, plus the minimum additional fuel necessary to conduct the test. (3) The fuel head between the tank outlet and the engine inlet must be critical with respect to rotorcraft flight attitudes. (4) The critical fuel pump (for pump-fed systems) is installed to produce (by actual or simulated failure) the critical restriction to fuel flow to be expected from pump failure. (5) Critical values of engine rotation speed, electrical power, or other sources of fuel pump motive power must be applied. (6) Critical values of fuel properties which adversely affect fuel flow must be applied. (7) The fuel filter required by § 27.997 must be blocked to the degree necessary to simulate the accumulation of fuel contamination required to activate the indicator required by § 27.1305(q). (b) (c)

official document · source cfr-2024 · id 14:§ 27.955