Operational Test of the AIR DATA Switching Function

TASK 34-13-00-710-001-A
Operational Test of the AIR DATA Switching Function

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: 210

1. Reason for the Job
Refer to the MPD TASK: 341300-02
OPERATIONAL CHECK OF AIR DATA SWITCHING FUNCTION
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 1M(3 FT)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
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 34-10-00-860-002-A	ADIRS Start Procedure
TASK 34-10-00-860-005-A	ADIRS Stop Procedure

3. Job Set-up
Subtask 34-13-00-860-056-A

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

Subtask 34-13-00-010-057-A

B. Get Access
(1) Put the ACCESS PLATFORM 1M(3 FT) in position at the access door 822.
(2) Open the access door 822.
(3) On the battery power center 105VU:

Loosen the two screws and remove the protective cover.

Subtask 34-13-00-865-063-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	NAV PROBES/ADIRU3/PWR/SWTG	8FP	F09
** ON A/C ALL
49VU	L/G/LGCIU/SYS1/NORM	1GA	C09
49VU	NAV PROBES/ADIRU 1/AND AOA 1/26VAC	5FP1	F07
49VU	NAV PROBES/ADIRU1/115VAC	4FP1	F06
** ON A/C NOT FOR ALL
49VU	NAV PROBES/ADIRU3/PWR/SWTG	8FP	F08
** ON A/C ALL
105VU	ADIRS/ADIRU1/28VDC	6FP1	C02
** ON A/C NOT FOR ALL
121VU	ADIRS/ADIRU/2PWR/SHED	10FP	N10
** ON A/C ALL
121VU	ADIRS/ADIRU/3PWR/SWTG	9FP	N09
121VU	ADIRS/ADIRU/2/26VAC AND AOA	5FP2	N08
121VU	ADIRS/ADIRU/3/26VAC AND AOA	5FP3	N07
121VU	ADIRS/ADIRU/2/115VAC	4FP2	N06
121VU	ADIRS/ADIRU/3/115VAC	4FP3	N05
121VU	ADIRS/ADIRU/2/28VDC	6FP2	N04
121VU	ADIRS/ADIRU/3/28VDC	6FP3	N03
121VU	HYDRAULIC/LGCIU/SYS2	2GA	Q35
121VU	HYDRAULIC/LGCIU/SYS1/GRND SPLY	52GA	Q34
** ON A/C NOT FOR ALL
121VU	ADIRS/2PWR/SHED &/AOA2 MON	10FP	N10

Subtask 34-13-00-860-057-A

D. Aircraft Maintenance Configuration
(1) Do the EIS start procedure (PFDs and NDs only) (Ref. AMM TASK 31-60-00-860-001).
(2) Do the ADIRS start procedure (Ref. AMM TASK 34-10-00-860-002).
(3) On the overhead panel:

On the FLT CTL panels 23VU and 24VU, make sure that the FAC, ELAC and SEC pushbutton switches are not pushed (in). The OFF legends are on.

(4) On the CAPT and F/O main instrument panels, on the PFDs:

Make sure that the altitude and airspeed data come into view.

4. Procedure
Subtask 34-13-00-710-050-A ** ON A/C NOT FOR ALL

A. BITE Test of the AIR DATA Switching Function

ACTION	RESULT
1.On the ADIRS CDU:
Push the ADR1 pushbutton switch.	On the ADIRS CDU, the OFF legend of the ADR1 pushbutton switch comes on On the CAPT PFD, the speed and altitude indications go out of view (ignore the related flag warnings).
2.On the center pedestal, on the SWITCHING panel 8VU:	On the CAPT PFD:
Set the AIR DATA selector switch to CAPT/3	The speed and altitude indications from the ADR3 come into view.
Set the AIR DATA selector switch to NORM.	The speed and altitude indications go out of view (ignore the related flag warnings).
3.On the ADIRS CDU: Push the ADR2 pushbutton switch.	On the ADIRS CDU, the OFF legend of the ADR2 pushbutton switch comes on On the F/O PFD, the speed and altitude indications go out of view (ignore the related flag warnings).
4.On the center pedestal, on the SWITCHING panel 8VU:	On the F/O PFD:
Set the AIR DATA selector switch to F/O/3	The speed and altitude indications from the ADR3 come into view
Set the AIR DATA selector switch to NORM.	The speed and altitude indications go out of view (ignore the related flag warnings).
5.On the ADIRS CDU:
Push the ADR1 and ADR2 pushbutton switches again	On the ADIRS CDU, the OFF legend of the ADR1 and ADR2 pushbutton switches goes off On the CAPT and F/O PFDs, the speed and altitude indications come into view.
Set the three OFF/NAV/ATT selector switches to OFF.

Subtask 34-13-00-710-050-B ** ON A/C NOT FOR ALL

A. BITE Test of the AIR DATA Switching Function

ACTION	RESULT
1.On ADIRS MSU panel 41VU:
Push ADR1 pushbutton switch.	On ADIRS MSU panel 41VU, the OFF legend of ADR1 pushbutton switch comes on. On the CAPT PFD, the speed and altitude indications go out of view (ignore the related flag warnings).
2.On the center pedestal, on the SWITCHING panel 8VU:	On the CAPT PFD:
Set the AIR DATA selector switch to CAPT/3.	The speed and altitude indications from ADR3 come into view.
Set the AIR DATA selector switch to NORM.	The speed and altitude indications go out of view (ignore the related flag warnings).
3.On ADIRS MSU panel 41VU: Push ADR2 pushbutton switch.	On ADIRS MSU panel 41VU, the OFF legend of ADR2 pushbutton switch comes on. On the F/O PFD, the speed and altitude indications go out of view (ignore the related flag warnings).
4.On the center pedestal, on the SWITCHING panel 8VU:	On the F/O PFD:
Set the AIR DATA selector switch to F/O/3.	The speed and altitude indications from ADR3 come into view.
Set the AIR DATA selector switch to NORM.	The speed and altitude indications go out of view (ignore the related flag warnings).
5.On ADIRS MSU panel 41VU:
Push ADR1 and ADR2 pushbutton switches again.	On ADIRS MSU panel 41VU, the OFF legend of ADR1 and ADR2 pushbutton switches goes off. On the CAPT and F/O PFDs, the speed and altitude indications come into view.
Set the three OFF/NAV/ATT selector switches to OFF.

5. Close-up
Subtask 34-13-00-860-058-A

A. Put the aircraft back to its initial configuration.
(1) Do the ADIRS stop procedure (Ref. AMM TASK 34-10-00-860-005).
(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 34-13-00-410-057-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] 2026.04.01 04:03:59 UTC