L-3's ESI-500 standby system

Castleberry Electric Attitude Gyro Indicator 300-14EL

General Dynamics Mk-27 FOG Gyrocompass Sperry Attitude Heading Reference System

uAvionix AV-30C Multi-Function Display, Precision Attitude and Directional Gyro

Honeywell Attitude Reference Indicator AR-500 7000836-927

LITEF LCR-93 Attitude Heading Reference Unit

Sandel SG102 Attitude Heading Reference System

Standby Attitude Indicator AI804AH P/N 501-1197-09 Removed Working 8/6/25