BITE Test of the ADF

TASK 34-53-00-740-003-A
BITE Test of the ADF

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.

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. 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 31-32-00-860-010-A	Procedure to Get Access to the SYSTEM REPORT/TEST NAV Page
TASK 34-10-00-860-002-A	ADIRS Start Procedure
TASK 34-10-00-860-004-A	Inertial Reference (IR) Alignment-Procedure
TASK 34-10-00-860-004-A-01	Automatic Inertial Reference (IR) Alignment-Procedure
TASK 34-10-00-860-004-A-02	Inertial Reference (IR) Alignment-Procedure to do a Check of the Links between each Flight Management and Guidance Computer (FMGC) and the three Air Data/Inertial Reference Units (ADIRUs)
TASK 34-10-00-860-005-A	ADIRS Stop Procedure
ADF-Frequency Selection ** ON A/C NOT FOR ALL
ADF-Frequency Selection ** ON A/C NOT FOR ALL
ADF-Frequency Selection ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 34-53-00-860-053-A ** 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) Do the IR alignment procedure
(Ref. AMM TASK 34-10-00-860-004).
(4) On the EFIS control sections of the FCU:

set the ADF/VOR selector switches to ADF
set the mode selector switches to ROSE/NAV.

(5) On the center pedestal, on the MCDU:

get the SYSTEM REPORT/TEST/NAV page
(Ref. AMM TASK 31-32-00-860-010)
push the NEXT PAGE function key.

(6) On the center pedestal, on the RMP1 (RMP2):

set the ON/OFF switch to ON
push the NAV pushbutton switch (the green LED on this pushbutton switch comes on)
tune ADF1 to a non local station (frequency more than 750KHz).
ADF-Frequency Selection ** ON A/C NOT FOR ALL
ADF-Frequency Selection ** ON A/C NOT FOR ALL
ADF-Frequency Selection ** ON A/C NOT FOR ALL

Subtask 34-53-00-860-053-B ** ON A/C NOT FOR ALL

set the ADF/VOR selector switches to ADF.
set the mode selector switches to ROSE/NAV.

(5) On the center pedestal, on the MCDU:

get the SYSTEM REPORT/TEST/NAV page
(Ref. AMM TASK 31-32-00-860-010)
push the NEXT PAGE function key.

(6) On the center pedestal, on the RMP1 (RMP2):

set the ON/OFF switch to ON
push the NAV pushbutton switch (the green LED on this pushbutton switch comes on)
tune ADF1 and ADF2 to a non local station (frequency more than 750 KHz).
ADF-Frequency Selection ** ON A/C NOT FOR ALL

(7) On the VOR/ADF/DME RMI:

set the VOR/ADF selector switches to ADF.

Subtask 34-53-00-860-053-I ** ON A/C NOT FOR ALL

set the ADF/VOR selector switches to ADF
set the mode selector switches to ROSE/NAV.

(5) On the center pedestal, on the MCDU:

get the SYSTEM REPORT/TEST menu page
(Ref. AMM TASK 31-32-00-860-010)
push the NEXT PAGE function key.

(6) On the center pedestal, on the RMP1 (RMP2):

set the ON/OFF selector switch to ON
push the NAV pushbutton switch (the green LED on this pushbutton switch comes on)
tune ADF1 to a non local station (frequency more than 750 KHz).
ADF-Frequency Selection ** ON A/C NOT FOR ALL
ADF-Frequency Selection ** ON A/C NOT FOR ALL

(7) On the VOR/ADF/DME RMI:

set the VOR/ADF selector switches to ADF.

Subtask 34-53-00-865-055-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	NAV/VOR/DME/RMI	12FN	F13
** ON A/C NOT FOR ALL
49VU	NAV/ADF/1	1RP1	H14
** ON A/C NOT FOR ALL
49VU	NAV PROBES/ADF/1	1RP1	F09
** ON A/C NOT FOR ALL
121VU	COM NAV/ADF/2	1RP2	K02

4. Procedure
Subtask 34-53-00-740-050-E ** ON A/C NOT FOR ALL

A. BITE Test of the ADF

ACTION	RESULT
1.On the MCDU:
push the line key adjacent to the ADF1 (ADF2) indication.	The ADF1 (ADF2) page comes into view.
push the line key adjacent to the TEST indication.	A fault indication comes into view for 3 seconds: on the CAPT and F/O NDs: . the ADF red indication comes into view. . the ADF pointer is not in view. on the VOR/ADF/DME RMI: . the ADF1 (ADF2) warning flag comes into view. . the ADF1 (ADF2) pointer stays in the same position. An NCD indication comes into view for 3 seconds: on the CAPT and F/O NDs: . the ADF red indication goes out of view. on the VOR/ADF/DME RMI: . the ADF1 (ADF2) warning flag goes out of view. An ADF heading indication comes into view for 7 seconds: on the CAPT and F/O NDs: . the ADF1 (ADF2) index comes into view and moves to a relative bearing of 135 deg. on the VOR/ADF/DME RMI: the ADF1 (ADF2) pointer indicates a relative bearing of 135° + or - 5°. At the end of the test: on the CAPT and F/O NDs: . the ADF1 (ADF2) pointer goes out of view. on the VOR/ADF/DME RMI: . the ADF1 (ADF2) pointer stays in the same position. on the MCDU: . the TEST OK indication comes into view.
push the line key adjacent to the RETURN indication.	the MCDU MENU page comes into view.

Subtask 34-53-00-740-050-K ** ON A/C NOT FOR ALL

A. BITE Test of the ADF

ACTION	RESULT
1.On the MCDU:	On the MCDU:
push the line key adjacent to the ADF1 indication.	the ADF1 page comes into view.
push the line key adjacent to the TEST indication.	the INITIAL CONDITIONS are shown (page 1 to 3). NOTE: Ignore all the checks to be done on the DDRMI.
push the line key adjacent to the START TEST indication.	the TEST IN PROGRESS 13S indication comes into view.
	From 0 to 6s: On the CAPT and F/O NDs: * the ADF1 pointer dissapears. * the RED ADF1 warning message comes into view.
	From 6 to 13s: On the CAPT and F/O NDs: * the ADF1 pointer comes into view, moves to a relative bearing of 135°.
On the MCDU:	On the MCDU:
push the line key adjacent to the YES indication.	the TEST OK indication comes into view.
push the line key adjacent to the RETURN indication.	The test procedure stops.

Subtask 34-53-00-740-050-L ** ON A/C NOT FOR ALL

A. BITE Test of the ADF

NOTE: During the BITE TEST (ADF1 or 2) by the MCDU ,the indications related to the two receivers (Capt and F/O) are shown at the same time.This has no effect on the test or component operation.

ACTION	RESULT
1.On the MCDU:	On the MCDU:
push the line key adjacent to the ADF1 (ADF2) indication.	the ADF1 (ADF2) page comes into view.
push the line key adjacent to the TEST indication.	the INITIAL CONDITIONS are shown (page 1 to 3).
push the line key adjacent to the START TEST indication.	the TEST IN PROGRESS 13S indication comes into view.
	From 0 to 6s: On the CAPT and F/O NDs: * the ADF1 (ADF2) pointer disappears. * the RED ADF1 (ADF2) warning message comes into view. On the VOR/ADF/DME RMI: * the ADF1 (ADF2) pointer stays at the last valid position on DDRMI NOTE: Disregard MCDU display test result. * the ADF1 (ADF2) warning flag comes into view during 3s.
	From 6 to 13s: On the CAPT and F/O NDs: * the ADF1 (ADF2) pointer comes into view, moves to a relative bearing of 135°. On the VOR/ADF/DME RMI: * the ADF1 (ADF2) pointer moves to a relative bearing of 135°.
On the MCDU:	On the MCDU:
push the line key adjacent to the YES indication.	the TEST OK indication comes into view.
push the line key adjacent to the RETURN indication.	The test procedure stops.

Subtask 34-53-00-740-050-O ** ON A/C NOT FOR ALL

A. BITE Test of the ADF

ACTION	RESULT
1.On the MCDU:	On the MCDU:
push the line key adjacent to the ADF1 indication.	the ADF1 page comes into view.
push the line key adjacent to the TEST indication.	the INITIAL CONDITIONS are shown (page 1 to 3).
push the line key adjacent to the START TEST indication.	the TEST IN PROGRESS 13S indication comes into view.
	From 0 to 6s: On the CAPT and F/O NDs: * the ADF1 pointer disappears. * the RED ADF1 warning message comes into view. On the VOR/ADF/DME RMI: * the ADF1 pointer stays at the last valid position on DDRMI NOTE: Disregard MCDU display test result. * the ADF1 warning flag comes into view during 3s.
	From 6 to 13s: On the CAPT and F/O NDs: * the ADF1 pointer comes into view, moves to a relative bearing of 135°. On the VOR/ADF/DME RMI: * the ADF1 pointer moves to a relative bearing of 135°.
On the MCDU:	On the MCDU:
push the line key adjacent to the YES indication.	the TEST OK indication comes into view.
push the line key adjacent to the RETURN indication.	The test procedure stops.

Subtask 34-53-00-740-050-R ** ON A/C NOT FOR ALL

A. BITE Test of the ADF

NOTE: During the BITE TEST (ADF1 or 2) by the MCDU ,the indications related to the two receivers (Capt and F/O) are shown at the same time.This has no effect on the test or component operation.

ACTION	RESULT
1.On the MCDU:	On the MCDU:
push the line key adjacent to the ADF1 (ADF2) indication.	the ADF1 (ADF2) page comes into view.
push the line key adjacent to the TEST indication.	the INITIAL CONDITIONS are shown (page 1 to 3).
push the line key adjacent to the START TEST indication.	the TEST IN PROGRESS 13S indication comes into view.
	From 0 to 6s: On the CAPT and F/O NDs: * the ADF1 (ADF2) pointer disappears. * the RED ADF1 (ADF2) warning message comes into view. On the VOR/ADF/DME RMI: * the ADF1 (ADF2) pointer is in the 3 o'clock position. * the ADF1 (ADF2) warning flag comes into view during 3s.
	From 6 to 13s: On the CAPT and F/O NDs: * the ADF1 (ADF2) pointer comes into view, moves to a relative bearing of 135°. On the VOR/ADF/DME RMI: * the ADF1 (ADF2) pointer moves to a relative bearing of 135°.
On the MCDU:	On the MCDU:
push the line key adjacent to the YES indication.	the TEST OK indication comes into view.
push the line key adjacent to the RETURN indication.	The test procedure stops.

Subtask 34-53-00-740-050-Y ** ON A/C NOT FOR ALL

A. BITE Test of the ADF

ACTION	RESULT
1.On the MCDU:	On the MCDU:
push the line key adjacent to the ADF1 indication.	the ADF1 page comes into view.
push the line key adjacent to the TEST indication.	the INITIAL CONDITIONS are shown (page 1 to 3).
push the line key adjacent to the START TEST indication.	the TEST IN PROGRESS 13S indication comes into view.
	From 0 to 6s: On the CAPT and F/O NDs: * the ADF1 pointer disappears. * the RED ADF1 warning message comes into view. On the VOR/ADF/DME RMI: * the ADF1 pointer stays at the last valid position on DDRMI NOTE: Disregard MCDU display test result. * the ADF1 warning flag comes into view during 3s.
	From 6 to 13s: On the CAPT and F/O NDs: * the ADF1 pointer comes into view, moves to a relative bearing of 135°. On the VOR/ADF/DME RMI: * the ADF1 pointer moves to a relative bearing of 135°.
On the MCDU:	On the MCDU:
push the line key adjacent to the YES indication.	the TEST OK indication comes into view.
push the line key adjacent to the RETURN indication.	The test procedure stops.

5. Close-up
Subtask 34-53-00-860-054-A

A. Put the aircraft back to its initial configuration.
(1) On the EFIS control sections of the FCU, set the ADF/VOR selector switches to OFF.
(2) Do the ADIRS STOP procedure (Ref. AMM TASK 34-10-00-860-005)
(3) On the center pedestal, on the RMP:

push the NAV pushbutton switch (the green LED on this pushbutton switch goes off).
set the ON/OFF switch to OFF.

(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] 2026.04.02 06:23:33 UTC