Master Fire Warning Lights
Two master FIRE WARN lights illuminate when any fire warning condition occurs. The lights
remain illuminated as long as the condition exists. Pushing either master FIRE WARN light
or fire warning bell cutout switch extinguishes both lights, silences the fire warning bell and
resets the system for future warnings.
Master Caution Lights
After engine start, the master caution system alerts the crew to warnings or cautions away
from the normal field of view.
Two MASTER CAUTION lights illuminate when any caution occurs outside the normal field
of vision of the flight crew. The lights remain illuminated as long as the caution condition
exists, or until the crew resets the system. Pushing either MASTER CAUTION light
extinguishes both lights and resets the master caution system for further cautions. Pushing
either annunciator light panel recalls all existing fault annunciations.
A single fault in certain redundant systems, or some simple faults, do not illuminate the
MASTER CAUTION or system annunciator lights. These faults, however, are stored in the
master caution system. Pushing the system annunciator recalls the single fault on the
system annunciator panel.
When the MASTER CAUTION recall is pressed, all twelve system lights should illuminate
while the press-to-test feature is held.
