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— the VOR / LOC navigation system — refer to 34-51-00. The system also uses the radio installation cooling fan.
The autopilot is electrically supplied by "BUS 2" bar, which electrically supplies a specific autopilot "BJ6" bus bar.
 
Autopilot — Electrical schematic
Figure 1
 
2. LOCATION (Figures 2, 3 and 4)
COMPONENT QTY AREA ACCESS DOOR REFERENCE
A82 flight computer 1 251 C / 22-12-00
B36 roll servo—actuator 1 230 218 or 218F 22-12-00
B38 pitch trim servo—actuator 1 220 219 and 242 22-12-00
AUTOPILOT MASTER switch 1 250 / 22-12-00
Control push—buttons (pilot control wheel) 1 230 232L 22-12-00
Warning buzzer (Autopilot sonalert) 1 241 / 22-12-00
BJ6 bus bar 1 230 232L 22-12-00
Circuit breakers : — "A / P"
— "TRIM" 1
1 230
230 232L
232L WM
WM

3. DESCRIPTION
A. A82 flight computer
A82 flight computer consists of an electronic box enclosing the processing circuits and the two modules storing the values determined upon system certification. These replaceable modules are installed on the top and bottom boards.
A82 flight computer receives data from the following components :
— control push—buttons located on the pilot control wheel,
— attitude director indicator (roll attitude data),
— heading reference system (selected course and heading data),
— radionavigation system (VOR, LOC and MKR data).
A82 flight computer processes these data and generates command signals which are sent to the roll servo—actuator when the autopilot mode is engaged.
A82 flight computer also ensures system monitoring and disables autopilot engagement when the pre—flight test has not been successfully completed.
When the autopilot is disengaged for whatever reason, it sends a signal to the autopilot sonalert and flashes "AP" annunciation.
A82 flight computer is electrically supplied by BJ6 bus bar.
A82 flight computer is mounted on the radio rack.
4. OPERATION
NOTE : For equipment operation and maintenance, refer to the supplier's Maintenance Manual.
 

 

  A — "AP DISC TRM INT' push—button
B — "TRIM UP DN" dual inverter
C — "CWS" push—button

14220000AAA0YZ5004 

Autopilot — Identification and location of components
Figure 3
 
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Autopilot — Identification and location of components
Figure 4
 
AUTOPILOT
DESCRIPTION AND OPERATION
　
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