Reactivation of the TCAS

TASK 34-72-00-440-001-A
Reactivation of the TCAS

ZONE: 210
FIN: 1000SG ** ON A/C NOT FOR ALL

1. Reason for the Job
MMEL 34-40-05A
TRAFFIC COLLISION AVOIDANCE SYSTEM (TCAS) (FAA ONLY)
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD

C. 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)

3. Job Set-up
Subtask 34-72-00-860-052-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).

Subtask 34-72-00-875-053-A ** ON A/C NOT FOR ALL

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	TCAS	1006SG	L01

Subtask 34-72-00-875-054-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	T/TISS	2004SG	K07

4. Procedure
Subtask 34-72-00-440-050-A ** ON A/C NOT FOR ALL

A. Reactivation of the TCAS
(1) Close the TCAS circuit breaker 1006SG.

Subtask 34-72-00-875-055-A ** ON A/C NOT FOR ALL

B. 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	T/TISS	2004SG	K07

Subtask 34-72-00-810-050-A ** ON A/C NOT FOR ALL

C. Do the trouble shooting of the TCAS.
(1) Do the trouble shooting of the TCAS that you deactivated using the Fault Symptom as entry into the TSM.

5. Close-up
Subtask 34-72-00-860-053-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) Remove the placard.
(2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(3) Make sure that the work area is clean and clear of tools and other items.

[Rev.10 from 2021] 2026.04.02 06:23:36 UTC