PANEL AVIONICS FAN FAILURE (FAN 1 AND/OR FAN 2 AMBER LIGHT ON)
FAN 1 LIGHT ILLUMINATED (BELOW COMM 1 CONTROL KNOB)
Indicates one or both internal cooling fans in the panel radio stack has failed. No limit applies, however, radio service life may be extended by turning off unused radios, particularly during ground operations.
FAN 2 LIGHT ILLUMINATED (BELOW COMM 2 CONTROL KNOB)
Indicates primary cooling fan for panel radios has failed.
1. Unnecessary Radios - OFF.