The crew AFES activates automatically when one of four Optical Fire Sensing Assemblies
(OFSA) detects hydrocarbon fuel fires. Crew AFES components are described below:
CREW TEST AND ALARM (T/A) PANEL
Provides status lights and switches and contains the electronic circuitry necessary to
monitor the crew AFES.
Interfaces with the Standard Control Electronic Amplifier (SCEA) and the OFSA.
The crew AFES has BITE, which automatically monitors the status of components and
allows crew members to test the components for normal operation.
A red guarded, two-position MANUAL ELECTRIC DISCHARGE toggle switch permits
the crew to manually discharge crew compartment fire extinguishers.