Operational Test of the Yellow Auxiliary Power

TASK 29-24-00-710-001-A
Operational Test of the Yellow Auxiliary Power

WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

FIN: 3075GX

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TASK 12-12-29-611-001-A	Fill the Hydraulic Fluid Reservoir with a Hand Pump
TASK 12-12-29-611-002-A	Fill the Hydraulic Fluid Reservoir with a Hydraulic Service Cart
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 29-14-00-614-002-A	Pressurization of the Hydraulic Reservoirs through the Ground Connector
TASK 29-14-00-614-002-A-01	Pressurization of the Hydraulic Reservoirs with the Auxiliary Power Unit (APU)
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure

3. Job Set-up
Subtask 29-24-00-865-051-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/HYD POWER/Y	3803GX	N30
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/HYD POWER/Y	3803GX	N31
** ON A/C ALL
123VU	Y HYD/ELEC/PUMP	3802GX	AB06
123VU	Y HYD/ELEC/ELEC PUMP/NORM	3801GX	AB03

Subtask 29-24-00-860-054-A

B. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(2) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(3) On the ECAM control panel on the center pedestal, push the HYD pushbutton (P/B). Make sure that the HYD page is shown on the ECAM lower Display Unit (DU).
(4) Make sure that the ECAM does not show any of these conditions:

Low air pressure in the Yellow reservoir,
Low fluid level in the Yellow reservoir.

(5) If necessary pressurize the reservoir (Ref. AMM TASK 29-14-00-614-002).
(6) If necessary, add fluid to the reservoir (Ref. AMM TASK 12-12-29-611-001) or (Ref. AMM TASK 12-12-29-611-002).
(7) On the overhead panel 40VU, push the PTU pushbutton switch (P/BSW) (OFF light comes on).
(8) On the panel 24VU, make sure that the ELAC 2 P/BSW is set to ON (OFF and FAULT lights are off).
(9) On the panel 23VU, make sure that the ELAC 1 and SEC 1 P/BSW are set to ON (OFF and FAULT lights are off).
(10) On the overhead panel 40VU, make sure that the YELLOW ELEC PUMP P/BSW is set to OFF (ON and FAULT lights are off).

4. Procedure
Subtask 29-24-00-710-050-A

WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

A. Do this test:

ACTION	RESULT
1.On overhead panel 40VU: push the YELLOW ELEC PUMP P/BSW.	On overhead panel 40VU: the ON light on the P/BSW comes on. The electric pump of the Yellow hydraulic system starts. On the ECAM lower DU: the pressure in the YELLOW hydraulic system must be between 2800 and 3200 psi.
2.On one nosewheel steering handwheel, push and hold the PEDALS DISC pushbutton.	The nosewheel steering is disconnected from the rudder pedals.
3.Operate the rudder and the elevators continuously.	On the ECAM lower DU: the pressure in the YELLOW hydraulic system must be not less than 2200 psi (with the control surfaces in operation).
4.Stop the operation of the control surfaces.	On the ECAM lower DU: the pressure in the YELLOW hydraulic system increases to between 2800 and 3200 psi.
5.On the nosewheel steering handwheel, release the PEDALS DISC pushbutton.	The nosewheel steering is connected to the rudder pedals.
6.On overhead panel 40VU: push the YELLOW ELEC PUMP P/BSW.	On overhead panel 40VU: the ON light goes off. The electric pump of the Yellow hydraulic system stops.

5. Close-up
Subtask 29-24-00-860-055-A

A. Put the aircraft back to the serviceable condition.
(1) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(2) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.01 00:26:55 UTC