Operational Check of PTU Thermal Inhibition Logic

TASK 29-23-00-710-803-A
Operational Check of PTU Thermal Inhibition Logic

WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:

THE FLIGHT CONTROLS
THE FLIGHT CONTROL SURFACES
THE LANDING GEAR AND THE RELATED DOORS
COMPONENTS THAT MOVE.

MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.

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.

WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.

1. Reason for the Job
Refer to the MPD TASK: 291000-21
OPERATIONAL CHECK OF PTU THERMAL INHIBITION LOGIC
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	2	ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific	1	GROUND POWER CART-HYDRAULIC
No specific	AR	SAFETY BARRIER(S)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)
98D29208246000	1	SAFETY DEVICE-RAT
98D29208246001	1	DEVICE-SAFETY,RAT

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
196BB

C. 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 27-50-00-866-008-A	Extension of the Flaps on the Ground
TASK 27-50-00-866-008-A-01	Extension of the Flaps/Slats on the Ground
TASK 29-10-00-863-002-A	Pressurize the Yellow Hydraulic System with a Hydraulic Ground Power-Cart
TASK 29-10-00-864-002-A	Depressurize the Yellow Hydraulic System
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 29-22-00-860-007-A	Installation of the Safety Device of the Ram Air Turbine
TASK 29-23-00-860-002-A	Connection of the Isolation Coupling of the Power Transfer Unit (PTU)
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
TASK 32-00-00-481-001-A	Installation of the Safety Devices on the Landing Gears
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 32-12-00-010-001-A	Open the Main Gear Doors for Access
TASK 32-12-00-410-001-A	Close the Main Gear Doors after Access
TASK 32-31-71-000-001-A	Removal of the LGCIU
TASK 32-31-71-400-001-A	Installation of the LGCIU
TASK 34-10-00-860-002-A	ADIRS Start Procedure
TASK 34-12-34-000-001-A	Removal of the ADIRU
TASK 34-12-34-400-001-A	Installation of the ADIRU
TASK 73-25-34-000-802-A	Removal of the Engine Interface Unit (EIU)
TASK 73-25-34-400-802-A	Installation of the Engine Interface Unit (EIU)
Isolation Coupling
High Pressure Manifold

3. Job Set-up
Subtask 29-23-00-941-051-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
(2) Make sure that the ground safety locks are installed on the landing gear (Ref. AMM TASK 32-00-00-481-001).
(3) Install the 98D29208246001 DEVICE-SAFETY,RAT or the 98D29208246000 SAFETY DEVICE-RAT (Ref. AMM TASK 29-22-00-860-007).
(4) On panel 400VU:
(a) Make sure that the landing gear control-lever 6GA is in the DOWN position
(b) Put a WARNING NOTICE(S) in position to tell persons not to operate the landing gear.
(5) Put a WARNING NOTICE(S) in position to tell persons that the flap system is in operation.

Subtask 29-23-00-860-080-A ** ON A/C NOT FOR ALL

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) Make sure that the Air Data/Inertial Reference System (ADIRS) operates (Ref. AMM TASK 34-10-00-860-002).
(4) On the ECAM control panel, push the HYD key. Make sure that the HYD page comes into view on the ECAM lower DU.
(5) Make sure that the ECAM does not show the warnings that follow:

Low air pressure in the Green, Blue or Yellow hydraulic reservoirs
Low fluid level in the Green, Blue or Yellow hydraulic reservoirs.

(6) If necessary, pressurize the applicable hydraulic reservoirs (Ref. AMM TASK 29-14-00-614-002).
(7) If necessary, add fluid to the applicable hydraulic reservoirs (Ref. AMM TASK 12-12-29-611-001) or (Ref. AMM TASK 12-12-29-611-002).
(8) Make sure that the isolation coupling of the Power Transfer Unit (PTU) is connected (Ref. AMM TASK 29-23-00-860-002):
(a) For location of the isolation coupling refer to

Isolation Coupling ** ON A/C NOT FOR ALL

(9) At the Nose Landing Gear (NLG), make sure that the towing lever is in the normal position (not in the tow position).

Subtask 29-23-00-010-056-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Open the main landing-gear doors (Ref. AMM TASK 32-12-00-010-001).
(2) Open the access panel 196BB.
(3) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position to get access to the avionics compartment.
(4) Do Flight Configuration Precautions with Electrical Power (Ref. AMM TASK 32-00-00-860-001).

Subtask 29-23-00-865-092-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/PARK BRK/CTL/STBY	71GG	N37
121VU	HYDRAULIC/PARK BRK/CTL/NORM	70GG	N36

Subtask 29-23-00-865-093-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	LGCIU/BAT SPLY/SYS2	59GA	R33
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/SOL VALVES/G/Y/PTU	1801GL	N34
121VU	HYDRAULIC/Y HYD/PUMP ENG2/MONG	3700GD	Q37
121VU	HYDRAULIC/LGCIU/SYS2	2GA	Q35
121VU	HYDRAULIC / PTU FLT INHIB	1825GL	Q31
** ON A/C NOT FOR ALL
121VU	LGCIU/BAT SPLY/SYS2	59GA	R32

Subtask 29-23-00-865-095-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
123VU	B HYD/ELEC PUMP	2701GJ	AB09

Subtask 29-23-00-860-079-A ** ON A/C NOT FOR ALL

G. Aircraft Maintenance Configuration
(1) On the nose gear leg, make sure that the towing lever is in the normal (engaged) position.
(2) In the cockpit, make sure that the parking brake is in the OFF position.
(3) On the overhead panel 40VU, set the PTU P/BSW to OFF (the OFF legend comes on).

Subtask 29-23-00-865-096-A ** ON A/C NOT FOR ALL

WARNING: OPEN CIRCUIT BREAKERS 1JH, 2JH1, 2JH2, 3JH1 AND 3JH2 (ENGINE 1 AND 2 IGNITION SYSTEMS). THEN OPEN CIRCUIT BREAKERS 2KS1 AND 2KS2 (FADEC A AND EIU 1 AND 2) AND 4KS1 (FADEC B AND EIU 1). IF YOU DO NOT OBEY THIS SEQUENCE, THE ENGINE AUTOMATIC IGNITION- SYSTEM WILL OPERATE. THIS CAN CAUSE INJURY TO MAINTENANCE PERSONNEL.

WARNING: OPEN CIRCUIT BREAKER 7XE. THIS WILL PREVENT A POSSIBLE DEPLOYMENT OF THE RAT IF THE MAIN AC BUSBARS 1XP AND 2XP BECOME ISOLATED.

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	ENGINE/2/FADEC A/AND EIU 2	2KS2	A05
49VU	ENGINE/1/FADEC A/AND EIU 1	2KS1	A04
49VU	ENGINE/1 AND 2/IGN/SYS A	1JH	A03
49VU	ANTI ICE/PROBES/AOA/1	4DA1	D04
49VU	ANTI ICE/PROBES/PHC/1	2DA1	D03
49VU	ANTI ICE/PROBES/PITOT/1	3DA1	D02
49VU	CAPT/LOUD/SPKR	5WW	F10
105VU	ELEC/CSM/G /EV AUTO/SPLY	7XE	C01
** ON A/C NOT FOR ALL
121VU	ENGINE/ENG2/FADEC B/AND EIU2	4KS2	Q40
121VU	ENGINE/ENG1/FADEC B/AND EIU 1	4KS1	R41
** ON A/C NOT FOR ALL
121VU	ENGINE/IGN/ENG2/SYS B	3JH2	P42
121VU	ENGINE/IGN/ENG1/SYS B	3JH1	P41
121VU	EIS/F/O/LOUD/SPKR	4WW	P08
** ON A/C NOT FOR ALL
121VU	ENGINE/ENG2/FADEC B/AND EIU2	4KS2	R41
121VU	ENGINE/ENG1/FADEC B/AND EIU 1	4KS1	R40
** ON A/C NOT FOR ALL
122VU	ANTI ICE/WINDOWS/R	4DG2	W14
122VU	ANTI ICE/WHC/2	5DG2	W13
122VU	ANTI ICE/WINDOWS/L	4DG1	X14
122VU	ANTI ICE/WHC/1	5DG1	X13
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
123VU	ANTI ICE/L/WHSLD	1DG1	AF10
123VU	ANTI ICE/R/WHSLD	1DG2	AF03

Subtask 29-23-00-020-053-A ** ON A/C NOT FOR ALL

I. Removal of the Engine Interface Unit (EIU)
(1) Remove the Engine Interface Units (EIUs):
(a) Remove the EIU (1KS1) (Ref. AMM TASK 73-25-34-000-803).
(b) Remove the EIU (1KS2) (Ref. AMM TASK 73-25-34-000-803).

NOTE: Removal of the EIUs can cause a EIU fault message on the SD during the test. This is permitted.

Subtask 29-23-00-860-081-A ** ON A/C NOT FOR ALL

J. Aircraft Maintenance Configuration
(1) In the cockpit, set the ENG1 and ENG 2 Master Switches to the ON position.

Subtask 29-23-00-865-097-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	ADIRS/ADIRU/2/115VAC	4FP2	N06
121VU	ADIRS/ADIRU/3/115VAC	4FP3	N05

Subtask 29-23-00-020-054-A ** ON A/C NOT FOR ALL

L. Removal of the ADIRU (1FP2, 1FP3)
(1) Remove the ADIRU-2 (1FP2) and the ADIRU-3 (1FP3) (Ref. AMM TASK 34-12-34-000-001).

Subtask 29-23-00-865-098-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1	5CV	B06
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1	5CV	B01
** ON A/C NOT FOR ALL
121VU	FLIGHT CONTROLS/SLT/CTL/SYS2	7CV	R21

Subtask 29-23-00-865-099-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1	6CV	B07
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1	6CV	B02
** ON A/C NOT FOR ALL
121VU	FLIGHT CONTROLS/WTB/FLP/SYS2	12CV	P20
121VU	FLIGHT CONTROLS/FLP/CTL AND/MONG/SYS2	8CV	Q21
122VU	FLIGHT CONTROLS/WTB/FLP/SYS1	10CV	S07

Subtask 29-23-00-860-082-A ** ON A/C NOT FOR ALL

O. Aircraft Maintenance Configuration
(1) Make sure that the S/F control lever position "0" is selected (Ref. AMM TASK 27-50-00-866-008).

4. Procedure
Subtask 29-23-00-710-060-A ** ON A/C NOT FOR ALL

A. Operational Check of PTU Inhibition Logic

High Pressure Manifold ** ON A/C NOT FOR ALL

CAUTION: WHEN YOU USE A HYDRAULIC GROUND POWER-SUPPLY OR GROUND CART, MAKE SURE THAT ITS HYDRAULIC FLOW FUNCTION IS LIMITED TO A MAXIMUM OF 50 LITERS FOR EACH MINUTE AT NOMINAL PRESSURE (3000 PSI). THIS WILL PREVENT DAMAGE TO THE PTU WHEN THE HP MANIFOLD HIGH PRESSURE IS STARTED.

(1) Increase the pressure in the Yellow hydraulic system to 3000 psi (206.84 bar) (Ref. AMM TASK 29-10-00-863-002).
(2) Use the GROUND POWER CART-HYDRAULIC and do the test that follows:

ACTION	RESULT
1.On the HP manifold of the Green hydraulic system: Disconnect the flight control-pressure electrical connector 10CE2-A Use a shunt to connect pins A and B of the connector together to simulate high pressure condition.
2.Simulate ENG1 N2>min idle On panel 85VU: On connector 1KS1-A, use a shunt to connect pins B2E and C28 together to simulate ENG1 running.
3.On the panel 40VU: Set the PTU P/BSW to the ON position.	On the panel 40VU: The OFF legend of the P/BSW is off The FAULT legend of the P/BSW is off. On the ECAM lower DU: Check that the PTU starts to supply hydraulic power from the Yellow to the Green hydraulic system.
4.Simulate ENG2 N2>min idle On panel 86VU: On connector 1KS2-A, use a shunt to connect pins B2E and C28 together to simulate ENG2 running.	On the panel 40VU: The OFF legend of the P/BSW is off The FAULT legend of the P/BSW is off. On the ECAM lower DU: Check that the PTU is inhibited.
5.Simulate ADIRU-2>50kts On ADIRU-2 (1FP2), put a ground on the connector AA, pin 2G.	On the panel 40VU: The OFF legend of the P/BSW is off The FAULT legend of the P/BSW is off. On the ECAM lower DU: Check that the PTU supplies hydraulic power from the Yellow to the Green hydraulic system.
6.Simulate ADIRU-3>50kts On ADIRU-3 (1FP3), put a ground on the connector AA, pin 2G.	On the panel 40VU: The OFF legend of the P/BSW is off The FAULT legend of the P/BSW is off. On the ECAM lower DU: Check that the PTU supplies hydraulic power from the Yellow to the Green hydraulic system.

Subtask 29-23-00-865-100-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	LGCIU/BAT SPLY/SYS2	59GA	R33
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/LGCIU/SYS2	2GA	Q35
** ON A/C NOT FOR ALL
121VU	LGCIU/BAT SPLY/SYS2	59GA	R32

Subtask 29-23-00-710-061-A ** ON A/C NOT FOR ALL

C. Operational Check of PTU Inhibition Logic

(1) Use the GROUND POWER CART-HYDRAULIC and do the test that follows:

ACTION	RESULT
1.Simulate NLG not compressed Remove LGCIU-2 (5GA2) (Ref. AMM TASK 32-31-71-000-001).	On the panel 40VU: The OFF legend of the P/BSW is off The FAULT legend of the P/BSW is off. On the ECAM lower DU: Check that the PTU supplies hydraulic power from the Yellow to the Green hydraulic system.
2.Simulate RH MLG UPLOCKED On LGCIU-2, put a ground on the connector AA, pin 9G.	On the panel 40VU: The OFF legend of the P/BSW is off The FAULT legend of the P/BSW is off. On the ECAM lower DU: Check that the PTU is inhibited.
3.Set the S/F control lever to position different from "0" (Ref. AMM TASK 27-50-00-866-008).	On the panel 40VU: The OFF legend of the P/BSW is off The FAULT legend of the P/BSW is off. On the ECAM lower DU: Check that the PTU supplies hydraulic power from the Yellow to the Green hydraulic system. The Flaps move to the set position.
4.Set the S/F control lever back to the "0" position (Ref. AMM TASK 27-50-00-866-008).	On the panel 40VU: The OFF legend of the P/BSW is off The FAULT legend of the P/BSW is off. On the ECAM lower DU: Check that the PTU is inhibited. The Flaps move to the set position.
5.On the HP manifold of the Green hydraulic system: Remove the shunt from the control-pressure electrical connector 10CE2-A Disconnect the electrical connector 1151GN-A and use a shunt to connect pins A and C of the connector 1151GN-A to simulate low pressure condition and wait a minimum of 10 seconds.	On the panel 40VU: The OFF legend of the P/BSW is OFF The FAULT legend of the P/BSW comes ON after 6 seconds. On the ECAM lower DU: Check that the PTU starts and stops automatically after 6 seconds.
6.On the HP manifold of the Green hydraulic system: Use a shunt to connect pins A and B of the connector 10CE2-A together to simulate high pressure condition and wait a minimum of 25 seconds.	On the panel 40VU: The OFF legend of the P/BSW is off The FAULT legend of the P/BSW goes OFF. On the ECAM lower DU: Check that after 20 seconds the PTU starts to supply hydraulic power from the Yellow to the Green hydraulic system.
7.Remove the shunt between pins A and C of the connector 1151GN-A and reconnect the electrical connector 1151GN-A.
8.Simulate NLG compressed: In the LGCIU-2 rack, put a ground on the connector AB, pin 9A. Simulate ENG1 N2<min idle On panel 85VU: On connector 1KS1-A, remove the shunt between pins B2E and C28 to simulate ENG1 not running. Simulate ENG2 N2<min idle On panel 86VU: On connector 1KS2-A, remove the shunt between pins B2E and C28 to simulate ENG2 not running.	On the panel 40VU: The OFF legend of the P/BSW is off The FAULT legend of the P/BSW is off. On the ECAM lower DU: Check that the PTU supplies hydraulic power from the Yellow to the Green hydraulic system.
9.Simulate ENG1 N2>min idle On panel 85VU: On connector 1KS1-A, use a shunt to connect pins B2E and C28 together to simulate ENG1 running. Simulate ENG2 N2>min idle On panel 86VU: On connector 1KS2-A, use a shunt to connect pins B2E and C28 together to simulate ENG2 running.	On the panel 40VU: The OFF legend of the P/BSW is off The FAULT legend of the P/BSW is off. On the ECAM lower DU: Check that the PTU supplies hydraulic power from the Yellow to the Green hydraulic system.
10.Simulate ADIRU-2<50kts On ADIRU-2 (1FP2), remove the ground from connector AA, pin 2G. Simulate ADIRU-3<50kts On ADIRU-3 (1FP3), remove the ground from connector AA, pin 2G.	On the panel 40VU: The OFF legend of the P/BSW is off The FAULT legend of the P/BSW is off. On the ECAM lower DU: Check that the PTU is inhibited.

(2) Decrease the pressure in the Yellow hydraulic system to the initial condition (Ref. AMM TASK 29-10-00-864-002).

5. Close-up
Subtask 29-23-00-420-055-A ** ON A/C NOT FOR ALL

A. Installation of the removed components
(1) On panel 85VU, remove the shunt between pins B2E and C28 of connector 1KS1-A (simulation of ENG1 N2<min idle).
(2) On panel 86VU, remove the shunt between pins B2E and C28 of connector 1KS2-A (simulation of ENG2 N2<min idle).

Subtask 29-23-00-860-083-A ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) In the cockpit, set the ENG1 and ENG 2 Master Switches to the OFF position.

Subtask 29-23-00-420-056-A ** ON A/C NOT FOR ALL

C. Installation of the removed components
(1) Install the Engine Interface Units (EIUs):
(a) Install the EIU (1KS1) (Ref. AMM TASK 73-25-34-400-803).
(b) Install the EIU (1KS2) (Ref. AMM TASK 73-25-34-400-803).

Subtask 29-23-00-865-094-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	ENGINE/2/FADEC A/AND EIU 2	2KS2	A05
49VU	ENGINE/1/FADEC A/AND EIU 1	2KS1	A04
49VU	ENGINE/1 AND 2/IGN/SYS A	1JH	A03
105VU	ELEC/CSM/G /EV AUTO/SPLY	7XE	C01
** ON A/C NOT FOR ALL
121VU	ENGINE/ENG2/FADEC B/AND EIU2	4KS2	Q40
121VU	ENGINE/ENG1/FADEC B/AND EIU 1	4KS1	R41
** ON A/C NOT FOR ALL
121VU	ENGINE/IGN/ENG2/SYS B	3JH2	P42
121VU	ENGINE/IGN/ENG1/SYS B	3JH1	P41
** ON A/C NOT FOR ALL
121VU	ENGINE/ENG2/FADEC B/AND EIU2	4KS2	R41
121VU	ENGINE/ENG1/FADEC B/AND EIU 1	4KS1	R40

Subtask 29-23-00-860-084-A ** ON A/C NOT FOR ALL

E. Aircraft Maintenance Configuration
(1) Make sure that the PTU operates (OFF and FAULT legends are off).

Subtask 29-23-00-865-101-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/SOL VALVES/G/Y/PTU	1801GL	N34
121VU	HYDRAULIC / PTU FLT INHIB	1825GL	Q31

Subtask 29-23-00-860-085-A ** ON A/C NOT FOR ALL

G. Aircraft Maintenance Configuration
(1) On the overhead panel 40VU, set the PTU P/BSW to OFF.
(2) Make sure that the OFF legend on the PTU P/BSW is on and the FAULT legend does not come on.

Subtask 29-23-00-865-102-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/SOL VALVES/G/Y/PTU	1801GL	N34
121VU	HYDRAULIC / PTU FLT INHIB	1825GL	Q31

Subtask 29-23-00-420-057-A ** ON A/C NOT FOR ALL

I. Installation of the ADIRU (1FP2, 1FP3)
(1) Install the ADIRU-2 (1FP2) and the ADIRU-3 (1FP3) (Ref. AMM TASK 34-12-34-400-001).

Subtask 29-23-00-865-103-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	ADIRS/ADIRU/2/115VAC	4FP2	N06
121VU	ADIRS/ADIRU/3/115VAC	4FP3	N05

Subtask 29-23-00-860-087-A ** ON A/C NOT FOR ALL

K. Aircraft Maintenance Configuration
(1) On the HP manifold of the Green hydraulic system, connect flight-control pressure-switch electrical-connector 10CE2-A.
(2) On LGCIU-2, remove the shunt from connector AA pin 9G.
(3) On LGCIU-2, remove the shunt from connector AB pin 9A.
(4) Install LGCIU-2 (5GA2) (Ref. AMM TASK 32-31-71-400-001).

Subtask 29-23-00-865-104-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1	5CV	B06
** ON A/C NOT FOR ALL
49VU	L/G/LGCIU/SYS1/NORM	1GA	C09
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1	5CV	B01
** ON A/C NOT FOR ALL
121VU	LGCIU/BAT SPLY/SYS2	59GA	R33
121VU	LGCIU/BAT SPLY/SYS1	58GA	R32
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/LGCIU/SYS2	2GA	Q35
121VU	HYDRAULIC/LGCIU/SYS1/GRND SPLY	52GA	Q34
121VU	FLIGHT CONTROLS/SLT/CTL/SYS2	7CV	R21
** ON A/C NOT FOR ALL
121VU	LGCIU/BAT SPLY/SYS2	59GA	R32
121VU	LGCIU/BAT SPLY/SYS1	58GA	R31

Subtask 29-23-00-410-055-A ** ON A/C NOT FOR ALL

M. Close Access
(1) Do the ground configuration after flight configuration with electrical power procedure (Ref. AMM TASK 32-00-00-860-002).
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Close access panel 196BB.
(4) Close the main landing-gear doors (Ref. AMM TASK 32-12-00-410-001).
(5) Remove the access platform(s).
(6) Remove the WARNING NOTICE(S).
(7) Remove the safety barrier(s).

Subtask 29-23-00-860-086-A ** ON A/C NOT FOR ALL

N. Put the aircraft back to the serviceable condition.
(1) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(2) In the cockpit, make sure that the parking brake is in the ON position.
(3) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.02 06:19:42 UTC