Installation of the DME Interrogator

TASK 34-51-33-400-001-A
Installation of the DME Interrogator

ZONE: 127
ZONE: 128
FIN: 2SD1
FIN: 2SD2

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	ACCESS PLATFORM 1M(3 FT)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
127	REAR AVIONIC COMPARTMENT
128	REAR AVIONIC COMPARTMENT
824

C. Referenced Information

REFERENCE	DESIGNATION
TASK 34-51-00-740-002-A	BITE Test of the DME
TASK 52-41-00-410-002-A	Close the Avionics Compartment Doors after Access
DME Interrogator

3. Job Set-up
Subtask 34-51-33-860-050-A

A. Aircraft Maintenance Configuration
(1) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position at the access door 824 in zone 128.
(2) Make sure that the access door 824 is open.

Subtask 34-51-33-865-051-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
FOR FIN: 2SD1 (INTRGDME, 1)
49VU	NAV/DME/1	1SD1	G14
FOR FIN: 2SD2 (INTRGDME, 2)
121VU	COM NAV/DME/2	1SD2	K06

4. Procedure
Subtask 34-51-33-420-050-A

A. Installation of the DME Interrogator
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the blanking caps from the electrical connectors (2).
(4) Make sure that the electrical connectors (2) are clean and in the correct condition.
(5) Install the DME interrogator (1) on its rack (3).
(6) Push the DME interrogator (1) on its rack (3) to connect the electrical connectors (2).
(7) Engage the nuts (4) on the lugs (5) and tighten.

Subtask 34-51-33-865-052-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
FOR FIN: 2SD1 (INTRGDME, 1)
49VU	NAV/DME/1	1SD1	G14
FOR FIN: 2SD2 (INTRGDME, 2)
121VU	COM NAV/DME/2	1SD2	K06

Subtask 34-51-33-710-050-A

C. Do the BITE test of the DME (Ref. AMM TASK 34-51-00-740-002).

5. Close-up
Subtask 34-51-33-860-051-A

A. Make sure that the work area is clean and clear of tools and other items.

Subtask 34-51-33-410-050-A

B. Close Access
(1) Close the access door 824 (Ref. AMM TASK 52-41-00-410-002).
(2) Remove the access platform(s).

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