J.E.T.

AIRBORNE NAVIGATION APPARATUS-NAMELY, SELF-CONTAINED GYRO POWER SUPPLY PACKS, [ INVERTERS ], EMERGENCY POWER SUPPLY PACKS, [ INVERTERS TO OBTAIN ELECTRICAL SUPPLY FOR OPERATION OF VARIOUS COMPONENTS OF THE AIRCRAFT, MALFUNCTION WARNING SYSTEMS, ENGINE PRESSURE RATIO SYSTEMS, STATIC INVERTERS, VERTICAL GYRO INDICATORS, ] GYRO HORIZON, [ SELF-CONTAINED ELECTRICAL VERTICAL SYSTEMS ], AND SELF-CONTAINED ELECTRICAL DIRECTIONAL GYRO SYSTEMS