Check of the Engine Bleed, Nacelle Anti-Ice and Wing Anti-Ice Valves Position Acquired by Air Conditioning System Controller with AIDS [CFMB]

TASK 73-29-00-710-042-B
Check of the Engine Bleed, Nacelle Anti-Ice and Wing Anti-Ice Valves Position Acquired by Air Conditioning System Controller with AIDS

1. Reason for the Job
Refer to the MPD TASK: 732500-C1
TBD
2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TASK 31-36-00-740-008-A	Access to the Parameter Call-Up Menus
TASK 71-00-00-710-003-B	Engine Automatic Start
TASK 71-00-00-710-004-B	Engine Manual Start
TASK 71-00-00-710-028-B	Engine Shutdown
Parameter Label Call-Up Menus

3. Job Set-up
Subtask 73-29-00-860-071-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Start the APU
(2) Start both engines (Ref. AMM TASK 71-00-00-710-003) or (Ref. AMM TASK 71-00-00-710-004).
(3) On the AIR COND panel 30VU, make sure that the PACK 1/2 pusbutton switches are pushed (the OFF legend is off).
(4) On the MCDU get the AIDS menu.

4. Procedure
Subtask 73-29-00-710-060-A ** ON A/C NOT FOR ALL

A. Check of the engine bleed valve, nacelle anti-ice valve and wing anti-ice valve position acquired by zone controller.
(1) On the MCDU menu select label call up PARAM LABEL key.

Parameter Label Call-Up Menus ** ON A/C NOT FOR ALL

(2) On the MCDU key board set 07C/1/271/01 for engine 1 (07C/2/271/10 for engine 2) and set ENTER (See ATA 31-36-00 for detailed description of AIDS).
(3) On the overhead control and indicating panel 25VU, make sure that wing anti-ice and nacelle anti-ice valves are off (the ON legend is off).
(4) Check the engine bleed valve and nacelle anti-ice valve signals.
(a) On the AIR COND panel 30VU, make sure that the engine bleed valves are off (the OFF legend is on).
(b) On the AIR COND panel 30VU, select the APU bleed to on (the ON legend is on).
(c) Wait until the position of all the valves is stable on the lower ECAM display unit, on the BLEED page.
(d) Print the page of the MCDU.
(e) Check on the printed page that bits 24 to 29 are all set to 0 (bits must be read from the right to the left of the displayed word).
Refer to AMM task (Ref. AMM TASK 31-36-00-740-008).

NOTE: For Sagem FDIMU's installed, read bit 29 under the "M" indication,
For Teledyne FDIMU's, SSM value is shown next to SSM, as SSM XYZ (where X=bit 31; Y=bit 30; Z=bit 29, value of the selected label),
For Teledyne DMU 9031116243Bxxxxx or 7950x0-xx-0xx series, read bit 29 under the "S" indication.

This ensures that :

there is no bleed valve position erroneous signal acquired by the zone controller
there is no nacelle anti-ice valve position erroneous signal acquired by the zone controller.

(5) Check the wing anti-ice valve signal.
(a) On the AIR COND panel 30VU, select the engine bleed valves to on (the OFF legend is off).
(b) On the AIR COND panel 30VU, select the APU bleed to off (the ON legend is off).
(c) Make sure there is no engine bleed fault.
(d) Print the page of the MCDU.
(e) Check on the printed page that bit 27 is set to 1 and bits 24, 25, 26, 28, 29 are all set to 0 (bits must be read from the right to the left of the displayed word). This ensures that there is no wing anti-ice valve position erroneous signal acquired by the zone controller.
(6) On the AIR COND panel 30VU, select the engine bleed valves to off (the OFF legend is on).

5. Close-up
Subtask 73-29-00-860-072-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) Push the line key adjacent to the RETURN indication until the MCDU menu comes into view.
(2) Stop the MCDU.
(3) Shutdown the engines (Ref. AMM TASK 71-00-00-710-028).
(4) Shutdown the APU.

[Rev.10 from 2021] 2026.04.01 02:59:48 UTC