Operational Test of the Takeover and Priority Pushbutton Switches

TASK 22-10-00-710-001-A
Operational Test of the Takeover and Priority Pushbutton Switches

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.

ZONE: 120
ZONE: 210

1. Reason for the Job
To do a check of the AP disengagement by the Takeover and Priority Pushbutton Switches and related warning.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
120	AVIONICS COMPARTMENT
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
822

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 34-10-00-860-004-A	Inertial Reference (IR) Alignment-Procedure
TASK 34-10-00-860-004-A-01	Automatic Inertial Reference (IR) Alignment-Procedure
TASK 34-10-00-860-004-A-02	Inertial Reference (IR) Alignment-Procedure to do a Check of the Links between each Flight Management and Guidance Computer (FMGC) and the three Air Data/Inertial Reference Units (ADIRUs)

3. Job Set-up
Subtask 22-10-00-860-050-A

A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) Align the ADIRS (two ADIRS are necessary in this test)
(Ref. AMM TASK 34-10-00-860-004).
(3) On the overhead panel, on the FLT CTL panels 23VU and 24VU:

make sure that the ELAC 1 and 2, SEC 1, 2 and 3, and FAC 1 and 2 pushbutton switches are pushed (the FAULT and OFF legends must be off).

NOTE: The two ELACs, one SEC and one FAC are necessary for this test.

(4) Do the EIS start procedure
(Ref. AMM TASK 31-60-00-860-001).

Subtask 22-10-00-010-050-A

B. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at the access door 822.
(a) Open the access door 822.
(b) On the battery power center 105VU:

loosen the two screws and remove the protective cover.

Subtask 22-10-00-865-050-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/ELAC1/NORM/SPLY	15CE1	B11
49VU	AUTO FLT/FCU/1	9CA1	B05
49VU	AUTO FLT/FMGC/1	10CA1	B02
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/ELAC1/NORM/SPLY	15CE1	B06
49VU	AUTO FLT/FCU/1	9CA1	H11
49VU	AUTO FLT/FMGC/1	10CA1	H08
** ON A/C ALL
105VU	FLIGHT CONTROLS/ELAC2/STBY SPLY	16CE2	A02
105VU	FLT CTL/ELAC1/STBY SPLY	16CE1	A01
** ON A/C NOT FOR ALL
121VU	AUTO FLT/RUDDER/ARTF/FEEL	14CA	N17
121VU	AUTO FLT/STICK/LOCK	13CA	N16
** ON A/C ALL
121VU	AUTO FLT/FCU/2	9CA2	M21
121VU	AUTO FLT/FMGC/2	10CA2	M17
121VU	FLIGHT CONTROLS/ELAC2/NORM/SPLY	15CE2	R20
** ON A/C NOT FOR ALL
121VU	AUTO FLT/RUDDER/ARTF/FEEL	14CA	N19
121VU	AUTO FLT/STICK/LOCK	13CA	N18

4. Procedure
Subtask 22-10-00-710-050-C

A. Do this test:

ACTION	RESULT
1.Make sure that the two FDs are engaged. NOTE: If they are not engaged, push the FD pushbutton switches on the FCU (glareshield: 13VU).	On the upper section of the Captain's and First Officer's PFDs: The white 1FD2 indications are in view.
2.On the FCU: Push the AP1(2) pushbutton switch to engage the AP1(2).	This pushbutton switch comes on. On the upper section of the PFDs: The white AP1(2) indication comes into view.
3.On the Captain's side stick controller: Push then release the Captain's takeover and priority pushbutton switch.	The AP1(2) disengages. On the FCU: The AP1(2) pushbutton switch goes off. The warnings related to AP disengagement occur as follows: You can hear the cavalry charge warning for approximately 1.5 seconds. On the glareshield, the red MASTER WARN lights flash for approximately 3 seconds. On the upper ECAM DU, the red AP OFF indication is shown for approximately 9 seconds.
4.On the FCU: Push the AP1(2) pushbutton switch to engage the AP1(2).	This pushbutton switch comes on. On the upper section of the PFDs: The white AP1(2) indication comes into view.
5.On the First Officer's side stick controller: Push then release the First Officer's takeover and priority pushbutton switch.	The AP1(2) disengages. On the FCU: The AP1(2) pushbutton switch goes off. The warnings related to AP disengagement occur as follows: You can hear the cavalry charge warning for approximately 1.5 seconds. On the glareshield, the red MASTER WARN lights flash for approximately 3 seconds. On the upper ECAM DU, the red AP OFF indication is shown for approximately 9 seconds.
6.Open the circuit breakers 15CE1(15CE2) and 16CE1(16CE2).	On the overhead panel, on the FLT CTL panel 23VU: The FAULT legend on the ELAC 1(2) pushbutton switch comes on.
7.On the FCU: Push the AP1(2) pushbutton switch to engage the AP1(2).	This pushbutton switch comes on. On the upper section of the PFDs: The white AP1(2) indication comes into view.
8.On the Captain's side stick controller: Push then release the Captain's takeover and priority pushbutton switch.	The AP1(2) disengages. On the FCU: The AP1(2) pushbutton switch goes off. The warnings related to AP disengagement occur as follows: You can hear the cavalry charge warning for approximately 1.5 seconds. On the glareshield, the red MASTER WARN lights flash for approximately 3 seconds. On the upper ECAM DU, the red AP OFF indication is shown for approximately 9 seconds.
9.Close the circuit breakers 15CE1(15CE2) and 16CE1(16CE2).	On the overhead panel, on the FLT CTL panel 23VU: The FAULT legend of the ELAC 1(2) pushbutton switch goes off after some seconds.
10.Do the tests again from step 2 to step 9 with information between parentheses.	You must get the same results (step by step).

5. Close-up
Subtask 22-10-00-860-051-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) On the overhead panel, on the ADIRS CDU, set the OFF/NAV/ATT selector switches to OFF.
(2) Do the EIS stop procedure (Ref. AMM TASK 31-60-00-860-002).
(3) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).

Subtask 22-10-00-860-051-B ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) On the overhead panel, on the ADIRS MSU, set the OFF/NAV/ATT selector switches to OFF.
(2) Do the EIS stop procedure (Ref. AMM TASK 31-60-00-860-002).
(3) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).

Subtask 22-10-00-410-050-A

B. Close Access
(1) Install the protective cover on the battery power center 105VU.
(2) Tighten the two screws.
(3) Close the access door 822.
(4) Remove the access platform(s).

[Rev.10 from 2021] 2026.03.31 23:09:50 UTC