Specifications

SECTION V
MODEL 560 ABNORMAL PROCEDURES
DISPLAY GUIDANCE COMPUTER COOLING FAN FAILURE (IC-1 OR IC-2 FAN MESSAGE ON MFD)
ON GROUND
Indicates failure of the display guidance computer cooling fan.
1. Ground Operating Time - DO NOT EXCEED 10 MINUTES.
IF GROUND OPERATING TIME EXCEEDS 10 MINUTES
2. DISPLAY GUID 1, DISPLAY GUID 2, and/or MFD Circuit Breakers (RH panel) - PULL as
appropriate.
CAUTION
ELECTRICAL POWER MUST BE REMOVED FROM EFIS SYSTEM TO PREVENT
OVERHEATING DURING GROUND OPERATIONS.
3. DISPLAY GUID 1, DISPLAY GUID 2, and/or MFD Circuit Breakers (RH panel) - RESET prior to
takeoff.
IF IC-1 OR IC-2 HOT MESSAGE ILLUMINATES
4. Refer to Abnormal Procedure, DISPLAY GUIDANCE COMPUTER OVERTEMPERATURE
(IC-1 OR IC-2 HOT MESSAGE ON PFD), if required.
IN FLIGHT
Indicates failure of the display guidance computer cooling fan.
1. Continue flight (as desired).
IF IC-1 OR IC-2 HOT MESSAGE ILLUMINATES
2. Refer to Abnormal Procedure, DISPLAY GUIDANCE COMPUTER OVERTEMPERATURE
(IC-1 OR IC-2 HOT MESSAGE ON PFD), if required.
DISPLAY GUIDANCE COMPUTER OVERTEMPERATURE (IC-1 OR IC-2 HOT MESSAGE ON PFD)
ON GROUND
1. Correct prior to flight.
IN FLIGHT
1. DISPLAY GUID 1 or DISPLAY GUID 2 Circuit Breaker (affected system) - PULL.
2. FD/AP Transfer Switch - Select operating side.
3. Land as soon as practical. Correct prior to next flight.
CAUTION
CONTINUED USE OF THE GUIDANCE COMPUTER WITHOUT THE FAN MAY
LEAD TO COMPUTER DAMAGE.
NOTE
T he output of the unaffected display guidance computer may be used to drive all
three displays by placing the MFD Mode Select Knob located on the MFD display
controller to SG1 or SG2 as appropriate.
I 56OMB-01 Configuration AA 5-27