ENGINE AUTOMATIC FIRE EXTINGUISHING SYSTEM (AFES)
The engine AFES activates automatically when the thermal detection system detects en-
gine fires. Engine AFES components are described below:
ENGINE TEST AND ALARM (T/A) PANEL
Provides status lights and switches and contains the electronic circuitry necessary to
automatically monitor the engine AFES.
Monitors the thermal sensing element (fire wire), and activates one of the engine fire
extinguishers when an engine fire is detected.
When fire is detected, the red FIRE ALARM indicator on the T/A panel and the red
ENGINE FIRE indicator on the Remote Status Indicator (RSI) in the crew compart-
The engine AFES contains Built-In Test Equipment (BITE) which automatically moni-
tors the status of AFES components.
BITE permits the driver to check the status of AFES components for normal operation.