Functional Test of the ATC/Mode S Transponder

TASK 34-52-00-720-005-A-02
Functional Test of the ATC/Mode S Transponder

CAUTION: MAKE SURE THAT YOU DO THIS TEST QUICKLY. IF THERE IS A RISK THAT MORE TIME WILL BE NECESSARY FOR THIS TEST, CONTACT THE NEAREST AIRPORT. THIS TEST CAN CAUSE INTERFERENCE WITH THE AIR TRAFFIC.

NOTE: The test results will be better if there are no buildings, vehicle or other aircraft in the area of the main antenna lobe (approximately 10 m (33 ft.)).

ZONE: 211
ZONE: 212

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

REFERENCE	QTY	DESIGNATION
No specific	AR	TEST UNIT - ATCRB, MODE S WITH ELS EHS FUNCTIONS

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
211	COCKPIT
212	COCKPIT

C. 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 32-00-00-860-001-A	Flight Configuration Precautions with Electrical Power
TASK 32-00-00-860-001-A-01	Flight Configuration Precautions without Electrical Power
TASK 32-00-00-860-002-A	Ground Configuration after Flight Configuration with Electrical Power
TASK 32-00-00-860-002-A-01	Ground Configuration after Flight Configuration without Electrical Power
TASK 32-69-00-860-001-A	Simulation of Flight (With Aircraft on Ground)
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 34-52-00-860-102-A

A. Obey the applicable safety precautions before flight configuration with electrical power (Ref. AMM TASK 32-00-00-860-001).

NOTE: It is necessary to do only once the flight configuration precautions with electrical power during the ATC/Mode S transponder functional test.

Subtask 34-52-00-860-094-A

B. 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) 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.

(4) On the SWITCHING panel 8VU:

Make sure that the AIR DATA selector switch is set to NORM.

Subtask 34-52-00-875-050-C ** ON A/C NOT FOR ALL

C. Table of the circuit breakers used in this procedure:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	L/G/LGCIU/SYS1/NORM	1GA	C09
49VU	NAV/MMR/1	42RT1	G12
121VU	COM NAV/MMR/2	42RT2	L07
121VU	HYDRAULIC/LGCIU/SYS2	2GA	Q35
121VU	HYDRAULIC/LGCIU/SYS1/GRND SPLY	52GA	Q34

Subtask 34-52-00-480-054-A ** ON A/C NOT FOR ALL

D. If possible, put the TEST UNIT - ATCRB, MODE S WITH ELS EHS FUNCTIONS and the user manual in the cockpit.

NOTE: You can do this test automatically if:

You use a test set that has the automatic test function.
You make sure that the automatic test procedure does a test of all the parameters given in this procedure.

(1) Make sure that the test set is in correct condition.
(2) Connect the test antenna to the test set.
(3) Put the test antenna in position in the line of sight of the ATC1 (2) bottom antenna only.

Subtask 34-52-00-480-054-B ** ON A/C NOT FOR ALL

D. If possible, put the TEST UNIT - ATCRB, MODE S WITH ELS EHS FUNCTIONS and the user manual in the cockpit.

NOTE: You can do this test automatically if:

You use a test set that has the automatic test function.
You make sure that the automatic test procedure does a test of all the parameters given in this procedure.

(1) Make sure that the test set is in correct condition.
(2) Connect the test antenna to the test set.
(3) Put the test antenna in position in the line of sight of the ATC1 (2) bottom antenna only.

NOTE: For the test of the ATC 2 function, you must use the TCAS antennas (not the ATC 2 antennas).

Subtask 34-52-00-860-095-B ** ON A/C NOT FOR ALL

E. Aircraft Maintenance Configuration
(1) On the center pedestal, on one Multipurpose Control & Display Unit (MCDU), get the LGCIU 1 (2) page and simulate a flight condition (Ref. AMM TASK 32-69-00-860-001).

NOTE: On the MCDU, on the L/G page, it is necessary to push the line key adjacent to the EXTENDED indication (not the UPLOCKED indication).

NOTE: It is not necessary to do again the flight configuration precautions with electrical power.

Push the line key adjacent to the NOSE+LH+RH FLIGHT indication.

NOTE: Simulation of flight automatically stops after a period of time (approx. 5 min.). When the aircraft goes back to ground configuration, the bottom antennas no longer transmit squitters.

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

Start the ATC system 1(2)
Enter the ATC code 7776, or a different code given by your local authorities, to keep the traffic interference to a minimum
Set the ALT RPTG/ON/OFF switch to ON
Set the AUTO/ON/STBY switch to AUTO.

Subtask 34-52-00-860-095-E ** ON A/C NOT FOR ALL

NOTE: On the MCDU, on the L/G page, it is necessary to push the line key adjacent to the EXTENDED indication (not the UPLOCKED indication).

NOTE: It is not necessary to do again the flight configuration precautions with electrical power.

Push the line key adjacent to the NOSE+LH+RH FLIGHT indication.

NOTE: Simulation of flight automatically stops after a period of time (approx. 5 min.). When the aircraft goes back to ground configuration, the bottom antennas no longer transmit squitters.

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

Start the ATC system 1(2)
Set the ATC code 7776, or a different code given by your local authorities, to keep the traffic interference to a minimum
Set the ALT RPT/OFF/ON switch to ON
Set the SBY/ON/TA/RA-TA switch to ON.

NOTE: In the procedure that follows, before you push the SELECT key to get the MODE S UF16 TEST page, and only for this page:

Set the SBY/ON/TA/RA-TA switch to RA-TA.
(Before you get the subsequent page, set this switch to ON again).

Subtask 34-52-00-860-095-J ** ON A/C NOT FOR ALL

NOTE: On the MCDU, on the L/G page, it is necessary to push the line key adjacent to the EXTENDED indication (not the UPLOCKED indication).

NOTE: It is not necessary to do again the flight configuration precautions with electrical power.

Push the line key adjacent to the NOSE+LH+RH FLIGHT indication.

NOTE: Simulation of flight automatically stops after a period of time (approx. 5 min.). When the aircraft goes back to ground configuration, the bottom antennas no longer transmit squitters.

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

Start the ATC system 1(2)
Enter the ATC code 7776, or a different code given by your local authorities, to keep the traffic interference to a minimum
Set the STBY/ALT RPTG OFF/XPNDR/TA ONLY/TA-RA switch to XPNDR.

Subtask 34-52-00-865-077-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	NAV/MMR/1	42RT1	G12
49VU	COM NAV/ATC/1	5SH1	G11
** ON A/C NOT FOR ALL
121VU	COM NAV/MMR/2	42RT2	K09
** ON A/C NOT FOR ALL
121VU	COM NAV/TCAS	4SG	K10
121VU	COM NAV/ATC/2	5SH2	K07
** ON A/C NOT FOR ALL
121VU	COM NAV/MMR/2	42RT2	L07
** ON A/C NOT FOR ALL
121VU	T/TISS	2004SG	K07

4. Procedure
Subtask 34-52-00-720-064-E ** ON A/C NOT FOR ALL

A. Functional Test of the ATC MODE S

NOTE: Do the test for the system 1.
Then, do the test for the system 2.

NOTE: There are many different types of test benches. This procedure gives a typical test sequence. The test sequence can change with the test bench used.

NOTE: For Elementary Surveillance (ELS) and Enhanced Surveillance (EHS) capable transponders, use an Extended Squitters (ES) capable test set.

ACTION	RESULT
1.Set the test set (or bench) for:	The test set must show:
- Interrogation MODE A	- MODE A: 7776 or the code given by the local authorities (see para. 3)
- Interrogation MODE A ONLY (ATCRBS - Mode A Only).	- No reply or PASS or OK.
2.Set the test set (or bench) for:	The test set must show:
- Interrogation MODE C	- MODE C code: Z,ZZZ ft (Z,ZZZ is a number that gives approximately the local field elevation).
- Interrogation MODE C ONLY (ATCRBS - Mode C Only).	- No reply or PASS or OK.
3.Set the test set (or bench) for:	The test set must show:
- Interrogation MODE S.	- MODE S aircraft code: XXXXXX (the aircraft code has 6 digits and agrees with the 24-bit Mode S address). - MODE A in DF 5 format - MODE C in DF 4 format - Flight number/Flight ID - Acquisition Squitters (PERIOD is between 0.8 second and 2.4 seconds in DF 11 format). - Aircraft status: Flight or Air.
4.Set the test set (or bench) for: Side Lobe Suppression (SLS) test	The test set must show:
- SLS: -9 dB (P1>P2)	- MODE A: 7776 or the code given by the local authorities (see para. 3) or PASS - MODE C: Z,ZZZ or PASS (If MODE C SLS test available in the test bench).
- SLS: 0 dB (P1=P2)	- MODE A: no reply or PASS - MODE C: no reply or PASS (If MODE C SLS test available in the test bench).
5.Set the test set (or bench) for:	The test set must show:
- INVALID ADDRESS/UNDESIRED REPLY MODE S test.	- MODE S ADDRESS: no reply or PASS.
6.On the center pedestal, on the ATC/TCAS control unit: - Set the ALT RPT/ON/OFF switch to OFF.	The test set must show:
Set the test set (or bench) for:
- Interrogation in MODE C.	- MODE C: no Altitude Value.
7.On the center pedestal, on the ATC/TCAS control unit:	On the test set:
- Set the ALT RPT/ON/OFF switch to ON
- Push the IDNT pushbutton switch.
Set the test set for:
- Interrogation in MODE A.	- The ident pulse is transmitted for a minimum of 20 seconds.
8.Set the test set (or bench) for:	On the test set:
- Antenna diversity test.	- The antenna diversity or isolation must be more than or equal to 20 dB. NOTE: Refer to the diversity testing procedure given in the test-bench user manual.
9.Set the test set (or bench) for:	On the test set:
- POWER test	- The POWER must be more than or equal to 125 W and less than or equal to 500 W.
- FREQUENCY test	- The FREQUENCY must be 1090 MHZ plus or minus 1 MHZ.
- SENSITIVITY test	- The SENSITIVITY or MTL must be -74 dBm plus or minus 3 dBm.
- SENSITIVITY difference MODE A/MODE C test.	- The SENSITIVITY difference must be less than or equal to 1 dB. NOTE: To measure the ATC 1(2) power and the ATC 1(2) sensitivity, the test antenna must be: In the line of sight of the ATC 1(2) bottom antenna Then in the line of sight of the ATC 1(2) top antenna. You must enter the distance between the ATC antennas and the test antenna in the set up menu of the test set. This distance is different for the bottom antenna and the top antenna of the ATC transponder on which you do the test. You must measure the distance with precision. If not, the results of the power test and the sensitivity test will be unsatisfactory. For more information, refer to the User Manual of your test set.
10.Put the aircraft back to ground configuration	The test set must show:
Set the test set (or bench) for:
- Interrogation in MODE A	- MODE A: no reply
- Interrogation in MODE C	- MODE C: no reply
- Interrogation in MODE S.	- MODE S aircraft code: XXXXXX - Flight number/Flight ID - Acquisition Squitters (PERIOD is between 0.8 second and 2.4 seconds in DF 11 format) - Aircraft status: Ground.

Subtask 34-52-00-720-064-N ** ON A/C NOT FOR ALL

A. Functional Test of ATC MODE S

NOTE: Do the test for system 1.
Then, do the test for system 2.

NOTE: There are many different types of test benches. This procedure gives a typical test sequence. The test sequence can change with the test bench used.

NOTE: For elementary surveillance and enhanced surveillance capable transponders, use an extended squitters capable test set.

ACTION	RESULT
1.Set the test set (or bench) for:	The test set must show:
- Interrogation MODE A	- MODE A: 7776 or the code that the local authorities gave you (see para. 3).
- Interrogation MODE A ONLY (ATCRBS - Mode A Only).	- "No reply", "PASS" or "OK".
2.Set the test set (or bench) for:	The test set must show:
- Interrogation MODE C	- MODE C code: Z,ZZZ ft (Z,ZZZ is a number that gives approximately the local field elevation).
- Interrogation MODE C ONLY (ATCRBS - Mode C Only).	- "No reply", "PASS" or "OK".
3.Set the test set (or bench) for:	The test set must show:
- Interrogation MODE S.	- MODE S aircraft code: XXXXXX (the aircraft code has 6 digits and agrees with the 24-bit MODE S address) - MODE A in the DF 5 format - MODE C in the DF 4 format - Flight number / Flight ID - Acquisition squitters (the period is between 0.8 second and 2.4 seconds in the DF 11 format) - Aircraft status: Flight or Air.
4.Set the test set (or bench) for: - Side Lobe Suppression (SLS) test	The test set must show:
- SLS: -9 dB (P1>P2)	- MODE A: 7776 or the code that the local authorities gave you (see para. 3) or "PASS". - MODE C: "Z,ZZZ" or "PASS" (if the MODE C SLS test available in the test bench).
- SLS: 0 dB (P1=P2).	- MODE A: "No reply" or "PASS". - MODE C: "No reply" or "PASS" (if the MODE C SLS test available in the test bench).
5.Set the test set (or bench) for:	The test set must show:
- "INVALID ADDRESS/UNDESIRED REPLY MODE S" test.	- MODE S ADDRESS: "No reply" or "PASS".
6.On the center pedestal, on the ATC control unit: - Set the ALT RPTG/ON/OFF switch to OFF.	The test set must show:
Set the test set (or bench) for:
- Interrogation in MODE C.	- MODE C: "No Altitude Value".
7.On the center pedestal, on the ATC control unit: - Set the ALT RPTG/ON/OFF switch to ON.	On the test set:
- Push the IDENT pushbutton switch.
Set the test set for:
- Interrogation in MODE A.	- The IDENT pulse is transmitted for a minimum of 20 seconds.
8.Set the test set (or bench) for:	On the test set:
- Antenna diversity test.	- The antenna diversity or isolation must be more than or equal to 20 dB. NOTE: Refer to the diversity testing procedure given in the test-bench user manual.
9.Set the test set (or bench) for:	On the test set:
- POWER test	- The POWER must be more than or equal to 125 W and less than or equal to 500 W.
- FREQUENCY test	- The FREQUENCY must be 1090 MHZ plus or minus 1 MHZ.
- SENSITIVITY test	- The SENSITIVITY or MTL must be -74 dBm plus or minus 3 dBm.
- SENSITIVITY difference MODE A/MODE C test.	- The SENSITIVITY difference must be less than or equal to 1 dB. NOTE: To measure the ATC 1(2) power and the ATC 1(2) sensitivity, the test antenna must be: In the line of sight of the ATC 1(2) bottom antenna Then in the line of sight of the ATC 1(2) top antenna. You must enter the distance between the ATC antennas and the test antenna in the set up menu of the test set. This distance is different for the bottom antenna and the top antenna of the ATC transponder on which you do the test. You must measure the distance with precision. If not, the results of the power test and the sensitivity test will be unsatisfactory. For more information, refer to the user manual of your test set.
10.Put the aircraft back to ground configuration.	The test set must show:
Set the test set (or bench) for:
- Interrogation in MODE A	- MODE A: "No reply"
- Interrogation in MODE C	- MODE C: "No reply"
- Interrogation in MODE S.	- MODE S aircraft code: XXXXXX - Flight number/Flight ID - Aircraft status: Ground.

Subtask 34-52-00-720-064-Q ** ON A/C NOT FOR ALL

A. Functional Test of the ATC MODE S

NOTE: Do the test for the system 1.
Then, do the test for the system 2.

NOTE: There are many different types of test benches. This procedure gives a typical test sequence. The test sequence can change with the test bench used.

NOTE: For Elementary Surveillance (ELS) and Enhanced Surveillance (EHS) capable transponders, use an Extended Squitters (ES) capable test set.

ACTION	RESULT
1.Set the test set (or bench) to:	The test set must show:
- Interrogation MODE A	- MODE A code: 7776 or the code that the local authorities gave you (see para. 3)
- Interrogation MODE A ONLY (ATCRBS - Mode A Only).	- "No reply", "PASS" or "OK".
2.Set the test set (or bench) to:	The test set must show:
- Interrogation MODE C	- MODE C code: Z,ZZZ ft (Z,ZZZ is a number that gives approximately the local field elevation).
- Interrogation MODE C ONLY (ATCRBS - Mode C Only).	- "No reply", "PASS" or "OK".
3.Set the test set (or bench) for:	The test set must show:
- Interrogation MODE S.	- The MODE S aircraft code: XXXXXX (the aircraft code has 6 digits and agrees with the 24-bit Mode S address). - Mode A in the DF 5 format - MODE C in the DF 4 format - Flight number/Flight ID - Acquisition Squitters (the period is between 0.8 second and 2.4 seconds in the DF 11 format). - Aircraft status: Flight or Air.
4.Set the test set (or bench) to: Side Lobe Suppression (SLS) test	The test set must show:
- SLS: -9 dB (P1>P2)	- MODE A: 7776 or the code that the local authorities gave you (see para. 3) or "PASS" - MODE C: "Z,ZZZ" or "PASS" (If the MODE C SLS test available in the test bench).
- SLS: 0 dB (P1=P2)	- MODE A: "No reply" or "PASS" - MODE C: "No reply" or "PASS" (if the MODE C SLS test is available in the test bench).
5.Set the test set (or bench) to:	The test set must show:
- "INVALID ADRESS/UNDESIRED REPLY MODE S" test.	- MODE S ADRESS: "No reply" or "PASS".
6.On the center pedestal, on the ATC/TCAS control unit: - Set the STBY/ALT RPTG OFF/XPNDR/TA ONLY/TA/RA switch to ALT RPTG OFF.	The test set must show:
Set the test set (or bench) to:
- Interrogation in MODE C.	- MODE C: "No Altitude Value".
7.On the center pedestal, on the ATC/TCAS control unit: - Set the STBY/ALT RPTG OFF/XPNDR/TA ONLY/TA/RA switch to XPNDR.	On the test set:
- Push the IDENT pushbutton switch.
Set the test set to:
- Interrogation in MODE A.	- The IDENT pulse is transmitted for a minimum of 20 seconds.
8.Set the test set (or bench) to:	On the test set:
- Antenna diversity test.	- The antenna diversity or isolation must be more than or equal to 20 dB. NOTE: Refer to the diversity testing procedure given in the test-bench user manual.
9.Set the test set (or bench) to:	On the test set:
- POWER test	- The POWER must be more than or equal to 125 W and less than or equal to 500 W.
- FREQUENCY test	- The FREQUENCY must be 1090 MHZ plus or minus 1 MHZ.
- SENSITIVITY test	- The SENSITIVITY or MTL must be -74 dBm plus or minus 3 dBm.
- SENSITIVITY difference MODE A/MODE C test.	- The SENSITIVITY difference must be less than or equal to 1 dB. NOTE: To measure the ATC 1(2) power and the ATC 1(2) sensitivity, the test antenna must be: In the line of sight of the ATC 1(2) bottom antenna Then in the line of sight of the ATC 1(2) top antenna. You must enter the distance between the ATC antennas and the test antenna in the set up menu of the test set. This distance is different for the bottom antenna and the top antenna of the ATC transponder on which you do the test. You must measure the distance with precision. If not, the results of the power test and the sensitivity test will be unsatisfactory. For more information, refer to the User Manual of your test set.
10.Put the aircraft back to ground configuration	The test set must show:
Set the test set (or bench) for:
- Interrogation in MODE A	- MODE A: "No reply"
- Interrogation in MODE C	- MODE C: "No reply"
- Interrogation in MODE S.	- MODE S aircraft code: XXXXXX - Flight number/Flight ID - Aircraft status: Ground.

Subtask 34-52-00-720-064-T ** ON A/C NOT FOR ALL

A. Functional Test of the ATC MODE S

NOTE: Do the test for the system 1.
Then, do the test for the system 2.

NOTE: There are many different types of test benches. This procedure gives a typical test sequence. The test sequence can change with the test bench used.

NOTE: For Elementary Surveillance (ELS) and Enhanced Surveillance (EHS) capable transponders, use an Extended Squitters (ES) capable test set.

ACTION	RESULT
1.Set the test set (or bench) for:	The test set must show:
- Interrogation MODE A	- MODE A code: 7776 or the code given by the local authorities (see para. 3)
- Interrogation MODE A ONLY (ATCRBS - Mode A Only).	- No reply or PASS or OK.
2.Set the test set (or bench) for:	The test set must show:
- Interrogation MODE C	- MODE C code: Z,ZZZ ft (Z,ZZZ is a number that gives approximately the local field elevation).
- interrogation MODE C ONLY (ATCRBS - Mode C Only).	- No reply or PASS or OK.
3.Set the test set (or bench) for:	The test set must show:
- Interrogation MODE S.	- MODE S aircraft code: XXXXXX (the aircraft code has 6 digits and agrees with the 24-bit Mode S address). - MODE A in DF 5 format - MODE C in DF 4 format - Flight number/Flight ID - Acquisition Squitters (PERIOD is between 0.8 second and 2.4 seconds in DF 11 format). - Aircraft status: Flight or Air.
4.Set the test set (or bench) for: Side Lobe Suppression (SLS) test	The test set must show:
- SLS: -9 dB (P1>P2)	- MODE A: 7776 or the code given by the local authorities (see para. 3) or PASS - MODE C: Z,ZZZ or PASS (If MODE C SLS test available in the test bench).
- SLS: 0 dB (P1=P2)	- MODE A: no reply or PASS - MODE C: no reply or PASS (If MODE C SLS test available in the test bench).
5.Set the test set (or bench) for:	The test set must show:
- INVALID ADDRESS/UNDESIRED REPLY MODE S test.	- MODE S ADDRESS: no reply or PASS.
6.On the center pedestal, on the ATC/TCAS control unit: - Set the ALT RPT/ON/OFF switch to OFF.	The test set must show:
Set the test set (or bench) for:
- Interrogation in MODE C.	- MODE C: no Altitude Value.
7.On the center pedestal, on the ATC/TCAS control unit: - Set the ALT RPT/ON/OFF switch to ON	On the test set:
- Push the IDNT pushbutton switch.
Set the test set for:
- Interrogation in MODE A.	- The ident pulse is transmitted for a minimum of 20 seconds.
8.Set the test set (or bench) for:	On the test set:
- Antenna diversity test.	- Antenna diversity or isolation must be more than or equal to 20 dB. NOTE: Refer to the diversity testing procedure given in the test-bench user manual.
9.Set the test set (or bench) for:	On the test set:
- POWER test	- The POWER must be more than or equal to 125 W and less than or equal to 500 W.
- FREQUENCY test	- The FREQUENCY must be 1090 MHZ plus or minus 1 MHZ.
- SENSITIVITY test	- The SENSITIVITY or MTL must be -74 dBm plus or minus 3 dBm.
- SENSITIVITY difference MODE A/MODE C test.	- The SENSITIVITY difference must be less than or equal to 1 dB. NOTE: To measure the ATC 1(2) power and the ATC 1(2) sensitivity, the test antenna must be: In the line of sight of the ATC 1(2) bottom antenna Then in the line of sight of the ATC 1(2) top antenna. You must enter the distance between the ATC antennas and the test antenna in the set up menu of the test set. This distance is different for the bottom antenna and the top antenna of the ATC transponder on which you do the test. You must measure the distance with precision. If not, the results of the power test and the sensitivity test will be unsatisfactory. For more information, refer to the User Manual of your test set.
10.Put the aircraft back to ground configuration	The test set must show:
Set the test set (or bench) for:
- Interrogation in MODE A	- MODE A: no reply
- Interrogation in MODE C	- MODE C: no reply
- Interrogation in MODE S.	- MODE S aircraft code: XXXXXX - Flight number/Flight ID - Aircraft status: Ground.

Subtask 34-52-00-720-065-A ** ON A/C NOT FOR ALL

B. Functional Test of ATC MODE S for Elementary Surveillance
(1) On the center pedestal, on one MCDU, get the LGCIU 1 (2) 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.

NOTE: It is not necessary to do again the flight configuration precautions with electrical power.

(2) Put the test antenna in position in the line of sight of the ATC1 (2) bottom antenna.

ACTION	RESULT
1.Set the test set (or bench) for the capability report Comm B Data 7 (BDS 1.0) test:	The test set must show:
- Surveillance Identifier (SI code test)	- "PASS", "OK" or "YES".
- A/C Ident capability.	- "PASS", "OK" or "YES".
2.Set the test set (or bench) for the capability report Comm B Data (BDS 1.7) test.	The test set must show: - "No null coding" or "PASS".
3.Set the test set (or bench) for the capability report Comm B Data (BDS 3.0) test:	The test set must show:
- Resolution Advisory (RA) test.	- "No RA", "Pass" or "OK".

(3) Put the aircraft back to its ground configuration.

Subtask 34-52-00-720-065-B ** ON A/C NOT FOR ALL

B. Functional Test of the ATC MODE S for Elementary Surveillance.
(1) Open, safety and tag this (these) circuit breaker(s): 1GA, 2GA, 52GA
(2) Put the test antenna in position in the line of sight of the ATC1 (2) bottom antenna.

ACTION	RESULT
1.Set the test set (or bench) for the capability Report Comm B Data 7 (BDS 1.0) test:	The test set must show:
- Surveillance Identifier (SI code test)	- PASS or OK or YES
- A/C Ident capability.	- OK or PASS or YES.
2.Set the test set (or bench) for the capability Report Comm B Data (BDS 1.7) test:	The test set must show: - No null coding or PASS.
3.Set the test set (or bench) for the capability report Comm B Data (BDS 3.0) test:	The test set must show:
- Resolution Advisory (RA) test.	- No RA or Pass or OK.

(3) Put the aircraft back to ground configuration

remove the safety clip(s) and the tag(s) and close this (these) circuit breaker(s): 1GA, 2GA, 52GA.

Subtask 34-52-00-720-066-A ** ON A/C NOT FOR ALL

C. Functional Test of ATC MODE S for Enhanced Surveillance

NOTE: The verification of enhanced surveillance functionality is focused on one parameter per BDS, and one parameter from each source Flight Control Unit (FCU), air data computer and inertial reference system.

(1) On the center pedestal, on one MCDU, get the LGCIU 1 (2) 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.

NOTE: It is not necessary to do again the flight configuration precautions with electrical power.

(2) Put the test antenna in position in the line of sight of the ATC1 (2) bottom antenna.

ACTION	RESULT
1.Set the test set (or bench) for the heading and speed report BDS 6.0 test:	The test set must show:
- Magnetic heading.	- Magnetic heading of the aircraft. NOTE: It is not necessary to do a check of the other parameters (barometric altitude rate, inertial vertical velocity, indicated airspeed, mach number) from BDS 6.0 as sources are already validated.
2.Set the test set (or bench) for the track and turn report BDS 5.0 test:	The test set must show:
Roll angle	X degrees (X is a number that gives approximately the roll of the aircraft).
Ground speed.	Approximately 0.0 kt. NOTE: It is not necessary to do a check of the other parameters (true track angle, track angle rate, true airspeed) from BDS 5.0 as sources are already validated.
3.In the center of the FCU: Turn the altitude selector knob to set an altitude of 10,000 ft in the ALT field of the display window. Pull the altitude selector knob.
4.On the CAPT and F/O sides of the FCU: Turn the baro reference selector knob until a pressure of 1013 hPa shows on the CAPT and F/O baro display. Do not pull the baro reference selector knob.
5.Set the test set (or bench) for the selected vertical intention BDS 4.0 test:	The test set must show:
- Barometric pressure setting - FCU selected altitude.	- 1013 hPa - 10,000 ft.

(3) Put the aircraft back to ground configuration.

Subtask 34-52-00-720-072-CS ** ON A/C NOT FOR ALL

D. Functional Test of ATC MODE S for the ADS-B OUT DO-260B Function

NOTE: Do not stop the test set (or bench) between the flight test and the ground test. If you do, you will lose the mode S address and it will not be possible to complete the test.

NOTE: GPS position must be available during the test. Thus, it is necessary to do the test in an open area (not in a hangar).

NOTE: During this test, ignore all ECAM alerts related to the GPS system and LS approach functions.

(1) Open, safety and tag circuit breaker 42RT2.
(2) On the center pedestal, on one Multipurpose Control & Display Unit (MCDU), get the LGCIU 1 (2) page and simulate a flight condition (Ref. AMM TASK 32-69-00-860-001).

NOTE: It is not necessary to obey the flight configuration precautions again with the electrical power.

Push the line key adjacent to the "NOSE+LH+RH FLIGHT" indication.

(3) Put the test antenna in position in the line of sight of the ATC1 (2) bottom antenna only.
(4) Enter the local latitude and longitude in the test-bench SETUP menu (refer to the ADS-B OUT testing procedure given in the test-bench user manual).

ACTION	RESULT
1.Set the test set (or bench) for the airborne-position BDS 0.5 test:	The test set must show:
Latitude Longitude Baro altitude	The latitude of the aircraft The longitude of the aircraft Z.ZZZ ft (Z.ZZZ is a number that approximately gives the local field elevation).
Transmission rate	The period is between 0.8 second and 1.2 seconds. NOTE: If your test set receives the signals from the two antennas: the period is between 0.4 and 0.6 second. NOTE: This rate corresponds to aircraft in flight. BDS 0.5 is not transmitted on ground.
2.Set the test set (or bench) for the aircraft-identification BDS 0.8 test:	The test set must show:
Aircraft identification Transmission rate	The flight number/Flight ID The period is between 9.6 seconds and 10.4 seconds. NOTE: If your test set receives the signals from the two antennas: the period is between 4.8 and 5.2 seconds. NOTE: This rate corresponds HIGH RATE for BDS 0.8 transition.
ADS-B Emitter Category	EMIT CAT = LARGE
3.Set MMR2 to on and MMR1 to off: Remove the safety clip and the tag and close circuit breaker 42RT2.
Open, safety and tag circuit breaker 42RT1.
4.Set the test set (or bench) for the airborne velocity BDS 0.9 test:	The test set must show:
Vertical rate	"0"
5.Set the test set (or bench) for the Extended-Squitter aircraft-status BDS 6.1 subtype-1 test:	The test set must show:
Emergency Priority Status	"NO EMERGENCY"
6.Set the test set (or bench) for the aircraft-operational-status BDS 6.5 subtype-0 test:	The test set must show:
ADS-B version number	"2" (related to the DO-260B function)
SIL	"3"
7.Put the test antenna in position in the line of sight of the ATC1 (2) top antenna.
8.Put the aircraft back to the ground configuration.
9.Set the test set (or bench) for the aircraft-surface-position BDS 0.6 test:	The test set must show:
Latitude Longitude Ground speed Transmission rate	The latitude of the aircraft The longitude of the aircraft Approximately 0.0 kt The period is between 4.8 seconds and 5.2 seconds. NOTE: This rate corresponds LOW RATE (aircraft on ground not moving) for BDS 0.6.
10.Set the test set (or bench) for the aircraft-identification BDS 0.8 test:	The test set must show:
Aircraft Identification Transmission rate	The flight number/Flight ID The period is between 9.8 seconds and 10.2 seconds. NOTE: This rate corresponds LOW RATE (aircraft on ground not moving) for BDS 0.8.
11.Set the test set (or bench) for the aircraft-operational-status BDS 6.5 subtype-1 test:	The test set must show:
Aircraft length and width	"< Xm", "< Ym" (X is the value that gives the length of the aircraft and Y is a value that gives the width of the aircraft).
GPS antenna offset	"0m", "4m" or "No data", "4m".

(5) Remove the safety clip and the tag and close circuit breaker 42RT1.

5. Close-up
Subtask 34-52-00-860-096-B ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) Put the aircraft back to ground configuration after flight configuration with electrical power (Ref. AMM TASK 32-00-00-860-002).
(2) On the center pedestal, on the ATC/TCAS control unit, set:

The ALT RPTG ON/OFF switch to OFF
The ON/AUTO/STBY switch to STBY.

(3) Do the ADIRS Stop Procedure (Ref. AMM TASK 34-10-00-860-005).
(4) Remove the test antenna and the test set.
(5) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

Subtask 34-52-00-860-096-E ** ON A/C NOT FOR ALL

the ALT RPT ON/OFF switch to OFF
the SBY/ON/TA/RA-TA switch to SBY.

(3) Do the ADIRS Stop Procedure (Ref. AMM TASK 34-10-00-860-005).
(4) Remove the test antenna and the test set.
(5) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

Subtask 34-52-00-860-096-I ** ON A/C NOT FOR ALL

the STBY/ALT RPTG OFF/XPNDR/TA ONLY/TA/RA switch to STBY.

(3) Do the ADIRS Stop Procedure (Ref. AMM TASK 34-10-00-860-005).
(4) Remove the test antenna and the test set.
(5) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

Subtask 34-52-00-080-051-A

B. Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.04.02 06:23:31 UTC