Thrust Reverser Cycling Test (Menu Mode) [CFML]

TASK 73-29-00-740-804-A
Thrust Reverser Cycling Test (Menu Mode)

WARNING: MAKE SURE THAT:

THE TRAVEL RANGES OF THE THRUST REVERSERS OF ENGINE 1 (2) ARE CLEAR OF ALL TOOLS, EQUIPMENT AND PERSONS
THE THRUST REVERSER COWLS ARE CLOSED AND LATCHED
THE THROTTLE CONTROL LEVER OF ENGINE 1 (2) IS IN THE IDLE POSITION (ZERO ON THE SCALE).

IF YOU DO NOT OBEY THESE PRECAUTIONS, INJURY TO PERSONS AND DAMAGE TO EQUIPMENT CAN OCCUR.

ZONE: 400

1. Reason for the Job
During this test, hydraulic pressure must be available to be supplied to the thrust reverser system, as the thrust reverser will deploy and stow by moving the throttle in the reverse and forward regions under controlled conditions. Thrust reverser position switch faults, isolation valve and directional valve solenoid electrical checks, aircraft inhibition switch failures and the isolation valve position faults will be announced if detected. Only thrust reverser system detected faults will be announced during the test, the general FADEC test may be selected to determine if any other faults are present.

NOTE: It takes the physical thrust reverser system approximately 1.5 seconds to deploy fully from stowed, or to stow from fully deployed.

2. Job Set-up Information
A. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
400	POWER PLANT, NACELLES AND PYLONS

B. 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 31-32-00-860-012-A	Procedure to Get Access to the SYSTEM REPORT/TEST/ENG Page
TASK 78-32-50-410-801-A	Manually Stow the Translating Cowl
Thrust Reverser Cycling Test (Menu Mode)
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
TASK 29-23-00-863-001-A	Pressurize the Green Hydraulic System from the Yellow Hydraulic System through the PTU with the Electric Pump
TASK 29-23-00-864-001-A	Depressurize the Green and Yellow Hydraulic Systems after Operation of the PTU
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
TASK 29-24-00-863-001-A	Pressurize the Yellow Hydraulic System with the Electric Pump
TASK 29-24-00-864-001-A	Depressurize the Yellow Hydraulic System

3. Job Set-up
Subtask 73-29-00-861-065-A

A. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).

Subtask 73-29-00-865-076-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
FOR FIN: 4020KM1 (POWER PLANTDEMOUNTABLE, ENGINE 1)
49VU	ENGINE/1/FADEC A/AND EIU 1	2KS1	A04
121VU	ENGINE/ENG1/FADEC B/AND EIU 1	4KS1	R40
FOR FIN: 4020KM2 (POWER PLANTDEMOUNTABLE, ENGINE 2)
49VU	ENGINE/2/FADEC A/AND EIU 2	2KS2	A05
121VU	ENGINE/ENG2/FADEC B/AND EIU2	4KS2	R41

Subtask 73-29-00-860-086-A

C. Aircraft Maintenance Configuration
(1) On ENG panel 115VU:
(a) Make sure that the ENG MASTER switch 1(2) is set to OFF.
(b) Make sure that the ENG/MODE rotary selector-switch is set to NORM.
(2) On the ENG section of maintenance panel 50VU:
(a) Release the FADEC GND PWR1(2) pushbutton switch. The ON legend of this pushbutton switch comes on.

NOTE: After the FADEC is energized, wait ten seconds before you start the test. If you do not wait ten seconds, the interactive mode stops the EEC self-test and this can cause spurious faults.

(3) On the left or right MCDU, get the SYSTEM REPORT/TEST/ENG page (Ref. AMM TASK 31-32-00-860-012).

Subtask 73-29-00-863-050-A

D. Pressurize the Hydraulic System
(1) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
Pressurize the Green hydraulic system with the Yellow hydraulic system through the Power Transfer Unit (PTU) with electric pump (Ref. AMM TASK 29-23-00-863-001):

On the lower ECAM DU, make sure that the HYD page shows that the pressure of the Green system is 3000 psi (206.8427 bar).

(2) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
Pressurize the auxiliary Yellow hydraulic system with the electric pump (Ref. AMM TASK 29-24-00-863-001):

On the lower ECAM DU, make sure that the HYD page shows that the pressure of the Yellow system is 3000 psi (206.8427 bar).

4. Procedure
Subtask 73-29-00-710-067-A

CAUTION: BEFORE YOU START THE TEST, MAKE SURE THAT THE THRUST REVERSER COWLS ARE FULLY CLOSED. IF YOU DO NOT OBEY THIS INSTRUCTION, EXTENSIVE DAMAGE TO THE AIRCRAFT WILL OCCUR.

CAUTION: STOW THE THRUST REVERSER A MAXIMUM OF 40 SECONDS AFTER YOU FULLY DEPLOY IT. IF YOU DO NOT OBEY THIS TIME LIMIT, THE TEST WILL ABORT AND IT WILL BE NECESSARY TO STOW THE THRUST REVERSER MANUALLY.

A. Thrust Reverser Cycle Test (Menu Mode)

NOTE: : The EEC will not enter the menu mode (interactive mode) after an enquire command from the CFDS (Centralized Fault Display System) when any of the following conditions are set:

N2 more than ten percent or invalid
Engine not off
Engine not in default start state
TLA (Throttle Lever Angle) not at idle or invalid
Aircraft in the air
MASTER lever ON or invalid
BITE command code input label invalid.

NOTE: : The EEC will abort a running test or special function when any of the following conditions becomes set:

N2 more than ten percent or invalid
Engine state not off.
Engine not in default start state
Aircraft in the air
MASTER lever ON or invalid
You enter in the interactive mode of the other channel
40 seconds timer has elapsed after deploy or stow instruction screen is displayed.

(1) Do the test.

ACTION	RESULT
1.On the ENGINE MAIN MENU screen: Push the key adjacent to the FADEC XY indication.	The ENGINE 1 MAIN MENU is shown.
Push the key adjacent to the ENGINE TESTS.	The ENGINE TESTS main menu screen comes into view.
2.On the ENGINE TEST main menu screen: Push THRUST REVERSER TEST.	The THRUST REVERSER TEST screen comes into view.
3.On the THRUST REVERSER TEST screen: Push THRUST REVERSER CYCLING TEST.	The THRUST REVERSER TEST screen comes into view.
4.On the THRUST REVERSER TEST screen: Push START TEST.	The THRUST REVERSER TEST screen comes into view.
5.On the THRUST REVERSER TEST screen: Push CONFIRM START (5L).	The T/R DEPLOY INSTRUCTION screen comes into view.
When the thrust reverser is detected fully deployed:	The T/R STOW INSTRUCTION screen comes into view.
When all the conditions that follow are true: (1) The thrust reverser is detected fully stowed and locked. (2) The stow delay timer has expired. (3) No T/R faults active.	The THRUST REVERSER TEST OK screen comes into view.
When one of the conditions that follow are true: (1) 25 +/- 1 seconds has elapsed since ICV command on, and the thrust reverser is not detected fully deployed, and the T/R Test related faults active. (2) The thrust reverser is detected fully stowed and locked, and T/R faults are active. (3)The stow delay timer has expired, and T/R faults are active.	The THRUST REVERSER TEST FAULT LIST screen comes into view.
When one of the conditions that follow are true: (1) An abort condition is detected. (2) 40 seconds timer for deploy or stow operation has elapsed. (3) An MCDU line key has been pressed while 40 seconds timer for deploy or stow operation has not elapsed.	The T/R TEST NOT COMPLETED screen comes into view.
6.On the T/R TEST PASSED, FAILED or NOT COMPLETED screens: Push RETURN (6L).	The T/R TEST Complete screen comes into view.
7.On the T/R TEST Complete screen: Make sure T/R is stow or apply manual stow procedure (Ref. AMM TASK 78-32-50-410-801) if necessary. Push RETURN (6L).	The Special Function Main screen comes into view.

5. Close-up
Subtask 73-29-00-860-091-A

A. Put the aircraft back to its initial configuration.
(1) Make sure that the work area is clean and clear of tools and other items.

Subtask 73-29-00-864-050-A

B. Depressurization of the Aircraft Hydraulic Systems
(1) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
Depressurize the Green and Yellow hydraulic systems (Ref. AMM TASK 29-23-00-864-001).
(2) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
Depressurize the auxiliary Yellow hydraulic-system (Ref. AMM TASK 29-24-00-864-001).

Subtask 73-29-00-862-065-A

C. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.01 03:06:04 UTC