scope:

This specification covers the requirements for three types of integrally lighted indicators for indicating the flow rate of engine fuel in pounds per hour (pph) for three specific flow ranges. The indicator is a hermetically sealed synchro/servo receiver with a redundant counter/pointer display. The indicator may provide a voltage output signal proportional to the fuel flow rate and contains special damping provisions to attenuate small oscillatory transmitter output signals.

Indicators shall be of the following types, as specified (see 6.2):

Integral Flow Rate Type Lighting (PPH) EFU-22A/A Red 0-80,000 EFU-22A/A-2 Whit 0-80,000 EFU-22A/A-7 White 0-80,000

intended Use:

The indicators covered by this specification are intended for use in indication both main engine and afterburner flow rate.