R TASK 26-22-00-040-010
R To make sure that the APU Automatic Fire Extinguishing System is operative when
R the APU FIRE Light on External Power Panel is inoperative
R 1. Reason for the Job__________________
R Refer to the MMEL TASK: 26-22-11
R APU Fire Extinguishing
R APU Fire Light on External
R Power Panel
R 2. Job Set-up Information______________________
R Not Applicable
R 3. Job Set-up__________
R Subtask 26-22-00-860-068
R A. Aircraft Maintenance Configuration
R (1) There is no special job set-up for this task.
R 4. Procedure_________
R Subtask 26-22-00-710-074
R A. Operational Test of the Test Circuit
R -------------------------------------------------------------------------------
R ACTION RESULT
R -------------------------------------------------------------------------------
R 1. On ground: On the External Power Panel 108 VU:
R - the red APU FIRE light comes on.
R - the external warning horn sounds.
R NOTE : The APU fire extinguisher____
R operates automatically three
R seconds after the fire warning.
R 2. On ground: On the External Power Panel 108 VU:
R - the red APU FIRE light goes off.
R NOTE : The APU FIRE light goes off if____
R the fire is extinguished.
R 5. Close-up
________
R Subtask 26-22-00-860-069
R A. Make sure that the work area is clean and clear of tool(s) and other R items.
R TASK 26-22-00-040-011
R To make sure that the APU Automatic Fire Extinguishing System is operative when
R the APU SHUT OFF PB on External Power Panel is inoperative
R 1. Reason for the Job__________________
R Refer to the MMEL TASK: 26-22-12
R APU Fire Extinguishing
R APU Shut Off pb on External
R Power Panel
R 2. Job Set-up Information______________________
R A. Referenced Information
R -------------------------------------------------------------------------------
R REFERENCE DESIGNATION
R -------------------------------------------------------------------------------
R 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied
R from the External Power
R 3. Job Set-up__________
R Subtask 26-22-00-860-070
R A. Aircraft Maintenance Configuration
R (1) There is no special job set-up for this task.
R 4. Procedure
_________
R Subtask 26-22-00-710-075
R A. Operational Test of the Test Circuit
R -------------------------------------------------------------------------------
R ACTION RESULT
R -------------------------------------------------------------------------------
R 1. On the External Power Panel 108 On the External Power Panel 108 VU:
R VU: - the warning horn goes off.
R - lift the guard then push and
R release the APU SHUT OFF
R pushbutton switch.
R 2. On ground:
R NOTE : If an APU fire occurs and____
R someone outside the
R aircraft pushs the APU
R SHUT OFF pushbutton it
R makes sure, that the APU
R has shut down
R automatically.
R 5. Close-up________
R Subtask 26-22-00-860-071
R A. Put the aircraft back to its initial configuration.
R (1) Make sure that the work area is clean and clear of tool(s) and other
R items.
R (Ref. TASK 24-41-00-862-002).
TASK 26-22-00-040-012
Test Circuit Verification
R R WARNING : MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE_______ YOU SUPPLY ELECTRICAL POWER TO THE AIRCRAFT.
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