Title 40

SECTION 91.309

91.309 Engine intake air temperature measurement.

§ 91.309 Engine intake air temperature measurement.

(a) Engine intake air temperature measurement must be made within 100 cm of the air-intake of the engine. The measurement location must be either in the supply system or in the air stream entering the engine.

(b) The temperature measurements must be accurate to within ±2 °C.

---