BITE Test of the Air Traffic Control (ATC)

TASK 34-52-00-740-004-A
BITE Test of the Air Traffic Control (ATC)

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: 127
ZONE: 210
ZONE: 234

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
127	REAR AVIONIC COMPARTMENT
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
234	FWD PASSENGER COMPT OVERHEAD COMPARTMENT

B. Referenced Information

REFERENCE	DESIGNATION
TASK 22-70-00-710-002-A	Operational Test of the Initialization of the Flight Plan
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 31-32-00-860-010-A	Procedure to Get Access to the SYSTEM REPORT/TEST NAV Page
TASK 34-10-00-860-002-A	ADIRS Start Procedure
TASK 34-10-00-860-005-A	ADIRS Stop Procedure
TASK 34-72-00-740-001-A	BITE Test of the T/TISS

3. Job Set-up
Subtask 34-52-00-860-089-F ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(2) Do the ADIRS start procedure (Ref. AMM TASK 34-10-00-860-002).
(3) On the center pedestal, on the ATC/TCAS control unit, set:

the ATC system 1(2) on.
the ALT RPT ON/OFF switch to OFF.
the TRAFFIC AUTO/ON switch to AUTO.
the SBY/ON/TA/RA-TA switch to ON.

(4) Enter a flight plan to get a flight number (Ref. AMM TASK 22-70-00-710-002).

NOTE: Use a company route stored in the NAV DATA BASE or enter the flight number "TEST" manually in the MCDU if it is not displayed.

Subtask 34-52-00-860-089-I ** ON A/C NOT FOR ALL

the ATC system 1(2) on.
the ALT RPTG/OFF/ON switch to OFF.
the STBY/AUTO/ON switch to AUTO.

(4) Enter a flight plan to get a flight number (Ref. AMM TASK 22-70-00-710-002).

NOTE: Use a company route stored in the NAV DATA BASE or enter the flight number "TEST" manually in the MCDU if it is not displayed.

Subtask 34-52-00-860-089-J ** ON A/C NOT FOR ALL

the ATC system 1(2) on.
the SBY/ALT RPTG OFF/XPNDR/TA ONLY/TA-RA switch to XPNDR

(4) Enter a flight plan to get a flight number (Ref. AMM TASK 22-70-00-710-002).

NOTE: Use a company route stored in the NAV DATA BASE or enter the flight number "TEST" manually in the MCDU if it is not displayed.

Subtask 34-52-00-860-086-A

B. On the center pedestal, on one MCDU, get the SYSTEM REPORT/TEST/NAV page then push the NEXT PAGE function key.
(Ref. AMM TASK 31-32-00-860-010)

Subtask 34-52-00-865-055-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	COM NAV/ATC/1	5SH1	G11
** ON A/C NOT FOR ALL
121VU	COM NAV/ATC/2	5SH2	K07
** ON A/C NOT FOR ALL
121VU	T/TISS	2004SG	K07

4. Procedure
Subtask 34-52-00-740-054-A ** ON A/C NOT FOR ALL

A. BITE Test of the ATC

ACTION	RESULT
On the MCDU:	On the MCDU:
on the NAV page, push the line key adjacent to the ATC1 (ATC2) indication.	the ATC page comes into view.
push the line key adjacent to the TEST indication.	On the ATC/TCAS control unit: the ATC FAULT or FAIL indicator light comes on during 2 seconds approx.
	At the end of the test, on the MCDU, the TEST OK indication comes into view.

Subtask 34-52-00-740-054-C ** ON A/C NOT FOR ALL

A. BITE Test of the ATC

ACTION	RESULT
On the MCDU:	On the MCDU:
1.On the NAV page, push the line key adjacent to the ATC1 (ATC2) indication.	The ATC1 (ATC2) page comes into view.
2.Push the line key adjacent to the TEST indication.	The ATC1 (ATC2) TEST page with the INITIAL CONDITIONS indication comes into view.
3.Push the line key adjacent to the START TEST indication.	On the ATC/TCAS control unit: The ATC FAULT or FAIL indicator light comes on for approximately two seconds. On the MCDU: The ATC1 (ATC2) TEST page with the TEST IN PROGRESS indication comes into view. After few seconds, the TEST OK indication comes into view.
4.Push the line key adjacent to the RETURN indication.	The ATC1 (ATC2) TEST CLOSE-UP page comes into view.
5.Push the line key adjacent to the RETURN indication.	The test procedure stops.

Subtask 34-52-00-740-054-F ** ON A/C NOT FOR ALL

A. BITE Test of the ATC
For ATC2, do the BITE test of the T/TISS (ATC2 part) (Ref. AMM TASK 34-72-00-740-001).

ACTION	RESULT
On the MCDU:	On the MCDU:
1.On the NAV page, push the line key adjacent to the ATC1 indication.	The ATC1 page comes into view.
2.Push the line key adjacent to the TEST indication.	The ATC1 TEST page with the INITIAL CONDITIONS indication comes into view.
3.Push the line key adjacent to the START TEST indication.	On the ATC/TCAS control unit: The ATC FAULT or FAIL indicator light comes on for approximately two seconds. On the MCDU: The ATC1 TEST page with the TEST IN PROGRESS indication comes into view. After few seconds, the TEST OK indication comes into view.
4.Push the line key adjacent to the RETURN indication.	The ATC1 TEST CLOSE-UP page comes into view.
5.Push the line key adjacent to the RETURN indication.	The test procedure stops.

Subtask 34-52-00-740-054-H ** ON A/C NOT FOR ALL

A. BITE Test of the ATC

ACTION	RESULT
1. FOR [1SH1]
On aft electronics rack 80VU, on the transponder front panel, push and release the "PUSH TO TEST" button.	All the transponder front panel lamps come on for approximately three seconds.
	At the end of the test, the XPDR P/F lamp comes on green for approximately 10 seconds and then goes off.

5. Close-up
Subtask 34-52-00-860-090-A

A. Put the aircraft back to its initial configuration.
(1) On the ATC/TCAS control unit, set the master switch to the standby position.
(2) Do the ADIRS stop procedure (Ref. AMM TASK 34-10-00-860-005).
(3) On the center pedestal, on the MCDU, push the line key adjacent to the RETURN indication until the MCDU MENU page comes into view.
(4) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(5) Make sure that the work area is clean and clear of tools and other items.

[Rev.10 from 2021] 2026.04.01 01:02:40 UTC