Powerplant instruments.

CFR · 2024-01-01 · US · Title 14

The following are required powerplant instruments: (a) For each rotorcraft— (1) A carburetor air temperature indicator for each reciprocating engine; (2) A cylinder head temperature indicator for each air-cooled reciprocating engine, and a coolant temperature indicator for each liquid-cooled reciprocating engine; (3) A fuel quantity indicator for each fuel tank; (4) A low fuel warning device for each fuel tank which feeds an engine. This device must— (i) Provide a warning to the crew when approximately 10 minutes of usable fuel remains in the tank; and (ii) Be independent of the normal fuel quantity indicating system. (5) A means to indicate manifold pressure for each altitude engine; (6) An oil pressure indicator for each pressure-lubricated gearbox. (7) An oil pressure warning device for each pressure-lubricated gearbox to indicate when the oil pressure falls below a safe value; (8) An oil quantity indicator for each oil tank and each rotor drive gearbox, if lubricant is self-contained; (9) An oil temperature indicator for each engine; (10) An oil temperature warning device to indicate unsafe oil temperatures in each main rotor drive gearbox, including gearboxes necessary for rotor phasing; (11) A means to indicate the gas temperature for each turbine engine; (12) A means to indicate the gas producer speed for each turbine engine; (13) A tachometer for each engine that, if combined with the applicable instrument required by paragraph (a)(14) of this section, indicates rotor

official document · source cfr-2024 · id 14:§ 29.1305