Test of the TAT Sensor without the CFDS

TASK 34-11-18-710-001-A
Test of the TAT Sensor without the CFDS

ZONE: 121
ZONE: 122
ZONE: 210
FIN: 11FP1
FIN: 11FP2

1. Reason for the Job
Do this test after the removal/installation of the TAT Sensor (11FP1,11FP2) when the CFDS is unserviceable.
2. Job Set-up Information
A. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
121	AVIONICS COMPARTMENT
122	AVIONICS COMPARTMENT
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD

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 34-10-00-860-005-A	ADIRS Stop Procedure
FOR [11FP2] (SENSOR-TAT, 2)
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 34-10-00-860-002-A	ADIRS Start Procedure

3. Job Set-up
Subtask 34-11-18-860-051-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 EIS start procedure
(a) FOR [11FP1] (SENSOR-TAT, 1)
Lower ECAM DU and CAPT ND only
(b) FOR [11FP2] (SENSOR-TAT, 2)
Lower ECAM DU only
(Ref. AMM TASK 31-60-00-860-001).
(3) Do the ADIRS start procedure
(a) FOR [11FP1] (SENSOR-TAT, 1)
ADIRU 1 and 3 only
(b) FOR [11FP2] (SENSOR-TAT, 2)
ADIRU 2 only
(Ref. AMM TASK 34-10-00-860-002).

Subtask 34-11-18-860-051-B ** 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 EIS start procedure
(a) FOR [11FP1] (SENSOR-TAT, 1)
Lower ECAM DU and CAPT ND only
(b) FOR [11FP2] (SENSOR-TAT, 2)
F/O ND only
(Ref. AMM TASK 31-60-00-860-001).
(3) Do the ADIRS start procedure
(a) FOR [11FP1] (SENSOR-TAT, 1)
ADIRU 1 and 3 only
(b) FOR [11FP2] (SENSOR-TAT, 2)
ADIRU 2 only
(Ref. AMM TASK 34-10-00-860-002).

Subtask 34-11-18-865-053-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
FOR FIN: 11FP1 (SENSORTAT, 1)
49VU	NAV PROBES/ADIRU1/115VAC	4FP1	F06
121VU	ADIRS/ADIRU/3/115VAC	4FP3	N05
122VU	ANTI ICE/PROBES/1/TAT	1DA1	Z12
FOR FIN: 11FP2 (SENSORTAT, 2)
121VU	ADIRS/ADIRU/2/115VAC	4FP2	N06
122VU	ANTI ICE/PROBES/2/TAT	1DA2	Y15

4. Procedure
Subtask 34-11-18-710-051-A ** ON A/C NOT FOR ALL

A. Test of the TAT Sensor
(1) Operational test of the TAT sensor 11FP1:

ACTION	RESULT
On the SWITCHING panel 8VU:
set the ECAM/ND XFR selector switch to CAPT.	the display of the lower ECAM DU moves to the CAPT ND. make sure that the SAT and TAT indications are shown at the bottom of the CAPT ND, on the left side.
set the AIR DATA selector switch to CAPT/3.	make sure that the SAT and TAT indications stay in view on the CAPT ND.
set the ECAM/ND XFR and AIR DATA selector switches to NORM.

(2) Operational test of the TAT sensor 11FP2:

Make sure that the SAT and TAT indications are shown at the bottom section of the lower ECAM DU, on the left side.

Subtask 34-11-18-710-051-B ** ON A/C NOT FOR ALL

A. Test of the TAT Sensor
(1) Operational test of the TAT sensor 11FP1:

ACTION	RESULT
On the SWITCHING panel 8VU: make sure that the selector switches are at the NORM position.	On the lower ECAM DU: the TAT indication is shown at the bottom section of the lower ECAM DU, on the left side.
set the ECAM/ND XFR selector switch to CAPT.	the display of the lower ECAM DU moves to the CAPT ND. make sure that the SAT and TAT indications are shown at the bottom of the CAPT ND, on the left side.
set the ECAM/ND XFR selector switch to NORM.
set the AIR DATA selector switch to CAPT/3.	make sure that the SAT and TAT indications are shown at the bottom section of the lower ECAM DU, on the left side (from ADIRU 3).
set the ECAM/ND XFR selector switch to F/O. set the AIR DATA selector switches to F/O/3.	make sure that the SAT and TAT indications are shown at the bottom of the F/O ND, on the left side (from ADIRU 3).
set the ECAM/ND XFR selector switch to NORM. set the AIR DATA selector switches to NORM..

(2) Operational test of the TAT sensor 11FP2:
(a) set the ECAM/ND XFR selector switch to F/O.

make sure that the SAT and TAT indications are shown at the bottom of the F/O ND, on the left side.

(b) set the ECAM/ND XFR selector switch to NORM.

5. Close-up
Subtask 34-11-18-860-050-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) On the center pedestal, on the ECAM control panel, set the LOWER DISPLAY potentiometer to OFF.
(3) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(4) Make sure that the work area is clean and clear of tools and other items.

[Rev.10 from 2021] 2026.04.01 12:34:22 UTC