Functional Test of the TCAS Antennas

TASK 34-43-00-720-001-A
Functional Test of the TCAS Antennas

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 1M(3 FT)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	TAPE - 3M CONDUCTIVE ELEC(X-1181-COPPER OR X-1170-ALU)
No specific	AR	TEST UNIT - ATC TCAS

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 32-69-00-860-001-A	Simulation of Flight (With Aircraft on Ground)
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)

3. Job Set-up
Subtask 34-43-00-480-050-A ** ON A/C NOT FOR ALL

A. Put an TAPE - 3M CONDUCTIVE ELEC(X-1181-COPPER OR X-1170-ALU) on the RA reception antenna 2 (5SA2). On the antenna, put as many aluminum tape layers as necessary to prevent display of the radio height value on the PFD (equivalent to the in-cruise condition for the RA).

Subtask 34-43-00-860-079-A ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) Do the ADIRS alignment procedure (Ref. AMM TASK 34-10-00-860-004).
(3) On the panel 13VU, on the CAPT and F/O EFIS control sections of the FCU:

set the mode selector switch to ROSE/NAV
set the scale selector switch to 10.

Subtask 34-43-00-865-141-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	COM NAV/ATC/1	5SH1	G11
121VU	COM NAV/RAD ALTM/2	1SA2	K12
121VU	COM NAV/TCAS	4SG	K10
121VU	COM NAV/ATC/2	5SH2	K07

Subtask 34-43-00-860-080-C ** ON A/C NOT FOR ALL

D. Aircraft Maintenance Configuration

NOTE: Ignore all the warnings.

(1) For the test of the TCAS bottom antenna:

On the center pedestal, on one MCDU, get the LGCIU 1 page and simulate a flight condition (Ref. AMM TASK 32-69-00-860-001)
Push the line key adjacent to the NOSE+LH+RH FLIGHT indication.
Push the applicable P/BSW (EXTENDED and UPLOCKED)

(2) On the center pedestal, on the ATC/TCAS control unit:

Start the ATC 1 system
Enter the ATC code 7776, or a different code given by your local authorities, to keep the traffic interference to a minimum
Set the TRAFFIC AUTO/ON switch to ON
Set the SBY/ON/TA/RA/TA switch to RA/TA
Set the ALT RPT ON/OFF switch to ON.

Subtask 34-43-00-860-080-E ** ON A/C NOT FOR ALL

D. Aircraft Maintenance Configuration

NOTE: Ignore all the warnings.

(1) For the test of the TCAS bottom antenna:

On the center pedestal, on one MCDU, get the LGCIU 1 page and simulate a flight condition (Ref. AMM TASK 32-69-00-860-001)
Push the line key adjacent to the NOSE+LH+RH FLIGHT indication.
Push the applicable P/BSW (EXTENDED and UPLOCKED)

(2) On the center pedestal, on the ATC/TCAS control unit:

Start the ATC 1 system
Set the THRT/ALL/ABV/BLW switch to ALL
Set the ALT RPTG/OFF/ON switch to ON.

Subtask 34-43-00-860-080-G ** ON A/C NOT FOR ALL

D. Aircraft Maintenance Configuration

NOTE: Ignore all the warnings.

(1) For the test of the TCAS bottom antenna:

On the center pedestal, on one MCDU, get the LGCIU 1 page and simulate a flight condition (Ref. AMM TASK 32-69-00-860-001)
Push the line key adjacent to the NOSE+LH+RH FLIGHT indication.
Push the applicable P/BSW (EXTENDED and UPLOCKED)

(2) On the center pedestal, on the ATC/TCAS control unit:

Start the ATC 1 system
Enter the ATC code 7776, or a different code given by your local authorities, to keep the traffic interference to a minimum
Set the ABV/N/BLW switch to N
Set the STBY/ALT RPTG OFF/XPNDR/TA ONLY/TA/RA switch to TA/RA.

Subtask 34-43-00-480-051-A ** ON A/C NOT FOR ALL

E. Put the TEST UNIT - ATC TCAS in position.

NOTE: For the test of the TCAS top antenna, put the ATC/TCAS test set on an ACCESS PLATFORM 1M(3 FT) .

(1) Put the ATC/TCAS test set in position on the right side of the aircraft at 40 ft. (12.19 m) from the bottom (top) antenna and at the same level as the antenna.
(2) Connect the test antenna to the ATC/TCAS test set.
(3) Make sure that the test antenna is in the line of sight of the TCAS bottom (top) antenna.
(4) Energize the ATC/TCAS test set.

Subtask 34-43-00-865-082-A ** ON A/C NOT FOR ALL

F. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	COM NAV/RAD ALTM/1	1SA1	K11

4. Procedure
Subtask 34-43-00-720-050-A ** ON A/C NOT FOR ALL

A. Functional Test of the TCAS Antennas

ACTION	RESULT
1.On the ATC/TCAS test set: set the ATCRBS/MODE S/TCAS/XPDR TEST selector switch to TCAS set the TCAS-intruder scenario selector-switch so that the intruder has the same altitude as the aircraft range: 14 NM closing speed: +300 kts or more
start the test	On the ATC/TCAS test set, the scenario starts. After some minutes, a minimum of two symbols come into view one after the other, in the right part of the ND: a yellow circle (Traffic Advisory) in the 5NM range then the yellow circle becomes a red square (Resolution Advisory).
2.Put the ATC/TCAS test set in position on the left side of the aircraft.
3.On the ATC/TCAS test set, start the test	On the ATC/TCAS test set, the scenario starts. After some minutes, a minimum of two symbols come into view one after the other, in the left part of the ND: a yellow circle (Traffic Advisory) in the 5NM range then the yellow circle becomes a red square (Resolution Advisory).

5. Close-up
Subtask 34-43-00-865-142-A ** ON A/C NOT FOR ALL

A. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	COM NAV/RAD ALTM/1	1SA1	K11

Subtask 34-43-00-860-081-A ** ON A/C NOT FOR ALL

B. Put the aircraft back to its initial configuration.
(1) On the center pedestal, put the ATC/TCAS control unit back to its initial configuration (standby/off mode).
(2) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).

Subtask 34-43-00-080-052-A ** ON A/C NOT FOR ALL

C. Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(1) Remove the aluminum adhesive tape from the RA reception antenna 2.
(2) Remove the ATC/TCAS test set and the test antenna.

Subtask 34-43-00-410-053-A ** ON A/C NOT FOR ALL

D. Close Access
(1) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.02 06:23:26 UTC