Operational Test of the Altitude Alert Warning

TASK 22-10-00-710-007-A
Operational Test of the Altitude Alert Warning

WARNING: MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE YOU SUPPLY ELECTRICAL POWER TO THE AIRCRAFT. UNWANTED ELECTRICAL POWER CAN BE DANGEROUS.

WARNING: IF HYDRAULIC SYSTEMS ARE PRESSURIZED, THE PITCH TRIM COULD AUTOMATICALLY GO TO THE NEUTRAL POSITION WHEN YOU GO BACK TO THE GROUND CONFIGURATION.

ZONE: 210

1. Reason for the Job
To do a check of the Altitude Alert Warning.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
TASK 32-00-00-860-001-A	Flight Configuration Precautions with Electrical Power
TASK 32-00-00-860-001-A-01	Flight Configuration Precautions without Electrical Power
TASK 32-00-00-860-002-A	Ground Configuration after Flight Configuration with Electrical Power
TASK 32-00-00-860-002-A-01	Ground Configuration after Flight Configuration without Electrical Power
TASK 34-10-00-860-002-A	ADIRS Start Procedure
TASK 34-10-00-860-005-A	ADIRS Stop Procedure

3. Job Set-up
Subtask 22-10-00-860-056-A

A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) Do the EIS start procedure
(Ref. AMM TASK 31-60-00-860-001).
(3) Do the ADIRS start procedure
(Ref. AMM TASK 34-10-00-860-002).
(4) Make sure that the aircraft is in the clean configuration (on the FLAPS panel 114VU, the lever is in the 0 notch position).

Subtask 22-10-00-860-059-A

B. Take the applicable safety precautions before you open the LGCIU circuit breakers (Ref. AMM TASK 32-00-00-860-001).

NOTE: You must do these actions to prevent probe heating and to simulate a flight configuration.

NOTE: Push and release the MASTER CAUT (or MASTER WARN) pushbutton switch to ignore the warnings related to this simulation.

Subtask 22-10-00-865-060-A

C. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	AUTO FLT/FCU/1	9CA1	B05
49VU	AUTO FLT/FMGC/1	10CA1	B02
** ON A/C ALL
49VU	CAPT/LOUD/SPKR	5WW	F10
49VU	FWS/FWC1/SPLY	3WW	F01
** ON A/C NOT FOR ALL
49VU	AUTO FLT/FCU/1	9CA1	H11
49VU	AUTO FLT/FMGC/1	10CA1	H08
** ON A/C ALL
121VU	AUTO FLT/FCU/2	9CA2	M21
121VU	AUTO FLT/FMGC/2	10CA2	M17
121VU	EIS/F/O/LOUD/SPKR	4WW	P08
121VU	EIS/FWC2/SPLY	2WW	Q07

Subtask 22-10-00-865-072-A

D. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	L/G/LGCIU/SYS1/NORM	1GA	C09
49VU	ANTI ICE/PROBES/AOA/1	4DA1	D04
49VU	ANTI ICE/PROBES/PHC/1	2DA1	D03
49VU	ANTI ICE/PROBES/PITOT/1	3DA1	D02
121VU	COM NAV/RAD ALTM/2	1SA2	K12
121VU	COM NAV/RAD ALTM/1	1SA1	K11
121VU	HYDRAULIC/LGCIU/SYS2	2GA	Q35
121VU	HYDRAULIC/LGCIU/SYS1/GRND SPLY	52GA	Q34
122VU	ANTI ICE/PROBES/PHC/3	2DA3	Y16
122VU	ANTI ICE/PROBES/2/TAT	1DA2	Y15
122VU	ANTI ICE/PROBES/2/PITOT	3DA2	Y14
122VU	ANTI ICE/PROBES/2/AOA	4DA2	Y13
122VU	ANTI ICE/PROBES/PHC/2	2DA2	Y12
122VU	ANTI ICE/PROBES/2/STATIC	5DA2	Y11
122VU	ANTI ICE/PROBES/3/PITOT	3DA3	Z16
122VU	ANTI ICE/PROBES/3/AOA	4DA3	Z15
122VU	ANTI ICE/PROBES/3/STATIC	5DA3	Z14
122VU	ANTI ICE/PROBES/1/STATIC	5DA1	Z13
122VU	ANTI ICE/PROBES/1/TAT	1DA1	Z12
** ON A/C NOT FOR ALL
2000VU	WASTE WIP-DRAINMAST-FWD	1DU	B06
** ON A/C NOT FOR ALL
2000VU	DRAINMAST-FWD	1DU	B03
** ON A/C NOT FOR ALL
2000VU	WASTE WIP-DRAINMAST-FWD	1DU	B03
** ON A/C ALL
2001VU	WASTE WIP-DRAINMAST-AFT	11DU	E01

Subtask 22-10-00-860-057-A

E. Aircraft Maintenance Configuration
(1) On the center pedestal, on the SWITCHING panel 8VU, make sure that the AIR DATA selector switch is set to NORM.
(2) On the FCUs:

Push the baro reference selector knobs to get baro reference,
then turn them to set an altitude equal to zero feet on Captain's and First Officer's PFDs.

4. Procedure
Subtask 22-10-00-710-057-A

A. Operational Test of the Altitude Alert Warning

NOTE: To do a check of the altitude alert circuit, you must do a check of FCU C/Bs with FWC C/Bs with these pairs of circuit breakers open:

9CA1/2WW
9CA1/3WW
9CA2/2WW
9CA2/3WW

ACTION	RESULT
1.Open the circuit breakers 9CA1 and 2WW.
2.In the center of the FCU: Turn the altitude selector knob to set an altitude of 1000 ft in the ALT field of the display window.
3.On the right side of the FCU: Turn the baro reference selector knob to set an altitude of 500 ft on the right altitude counter.	The altitude alert audio warning (C chord) operates only once briefly. On the two PFDs, altitude counter framework flashes yellow continuously.
Turn the baro reference selector knob to set an altitude of zero ft on the right altitude counter.	The altitude alert audio warning (C chord) operates continuously. On the two PFDs, the altitude counter framework flashes amber continuously.
4.In the center of FCU: Turn the altitude selector knob to set an altitude of 30000 ft in the ALT field of the display window.	The altitude audio warning stops. On the two PFDs, the altitude counter framework no longer flashes.
5.Close the circuit breaker 2WW. Open the circuit breaker 3WW. Wait for one minute. NOTE: Push and release the MASTER CAUT (or MASTER WARN) pushbutton switch to ignore the warnings.
6.Repeat the steps 2, 3 and 4.	Same results as in steps 2, 3 and 4.
7.Close the circuit breakers 9CA1 and 3WW. Open the circuit breakers 9CA2 and 2WW. Wait for one minute. NOTE: Push and release the MASTER CAUT (or MASTER WARN) pushbutton switch to ignore the warnings.
8.In the center of the FCU: Turn the altitude selector knob to set an altitude of 1000 ft in the ALT field of the display window.
9.On the left side of the FCU: Turn the baro reference selector knob to set an altitude of 500 ft on the left altitude counter.	The altitude alert audio warning (C chord) operates only once briefly. On the two PFDs, altitude counter framework flashes yellow continuously.
Turn the baro reference selector knob to set an altitude of zero ft on the left altitude counter.	The altitude alert audio warning (C chord) operates continuously. On the two PFDs, the altitude counter framework flashes amber continuously.
10.In the center of FCU: Turn the altitude selector knob to set an altitude of 30000 ft in the ALT field of the display window.	The altitude audio warning stops. On the two PFDs, the altitude counter framework no longer flashes.
11.Close the circuit breaker 2WW. Open the circuit breaker 3WW. Wait for one minute. NOTE: Push and release the MASTER CAUT (or MASTER WARN) pushbutton switch to ignore the warnings.
12.Repeat the steps 8, 9 and 10.	Same results as in steps 8, 9 and 10.
13.Close the circuit breakers 9CA2 and 3WW.

5. Close-up
Subtask 22-10-00-865-073-A

A. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	L/G/LGCIU/SYS1/NORM	1GA	C09
121VU	COM NAV/RAD ALTM/2	1SA2	K12
121VU	COM NAV/RAD ALTM/1	1SA1	K11
121VU	HYDRAULIC/LGCIU/SYS2	2GA	Q35
121VU	HYDRAULIC/LGCIU/SYS1/GRND SPLY	52GA	Q34

Subtask 22-10-00-860-060-A

B. After you close the LGCIU circuit breakers, put the aircraft back to the ground configuration (Ref. AMM TASK 32-00-00-860-002).

Subtask 22-10-00-865-074-A

C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	ANTI ICE/PROBES/AOA/1	4DA1	D04
49VU	ANTI ICE/PROBES/PHC/1	2DA1	D03
49VU	ANTI ICE/PROBES/PITOT/1	3DA1	D02
122VU	ANTI ICE/PROBES/PHC/3	2DA3	Y16
122VU	ANTI ICE/PROBES/2/TAT	1DA2	Y15
122VU	ANTI ICE/PROBES/2/PITOT	3DA2	Y14
122VU	ANTI ICE/PROBES/2/AOA	4DA2	Y13
122VU	ANTI ICE/PROBES/PHC/2	2DA2	Y12
122VU	ANTI ICE/PROBES/2/STATIC	5DA2	Y11
122VU	ANTI ICE/PROBES/3/PITOT	3DA3	Z16
122VU	ANTI ICE/PROBES/3/AOA	4DA3	Z15
122VU	ANTI ICE/PROBES/3/STATIC	5DA3	Z14
122VU	ANTI ICE/PROBES/1/STATIC	5DA1	Z13
122VU	ANTI ICE/PROBES/1/TAT	1DA1	Z12
** ON A/C NOT FOR ALL
2000VU	WASTE WIP-DRAINMAST-FWD	1DU	B06
** ON A/C NOT FOR ALL
2000VU	DRAINMAST-FWD	1DU	B03
** ON A/C NOT FOR ALL
2000VU	WASTE WIP-DRAINMAST-FWD	1DU	B03
** ON A/C ALL
2001VU	WASTE WIP-DRAINMAST-AFT	11DU	E01

Subtask 22-10-00-860-058-A

D. Aircraft Maintenance Configuration
(1) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(2) Do the ADIRS stop procedure
(Ref. AMM TASK 34-10-00-860-005).
(3) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.03.31 23:09:56 UTC