Removal of the Ice Detector

TASK 30-81-31-000-001-A
Removal of the Ice Detector

WARNING: MAKE SURE THAT THE CIRCUIT BREAKERS RELATED TO THE WEATHER RADAR ARE OPENED, SAFETIED AND TAGGED.

FIN: 2DD1 ** ON A/C NOT FOR ALL
FIN: 2DD2 ** ON A/C NOT FOR ALL

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 2M (6 FT)
No specific	AR	CAP - BLANKING
No specific	AR	PLUG - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
811

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 52-41-00-010-002-A	Open the Avionics Compartment Doors for Access
Ice Detector ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 30-81-31-861-050-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 30-81-31-010-050-A ** ON A/C NOT FOR ALL

B. Get access to the avionics compartment.
(1) Put ACCESS PLATFORM 2M (6 FT) in position at the access door 811.
(2) Open access door 811 (Ref. AMM TASK 52-41-00-010-002).

Subtask 30-81-31-865-050-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	COM NAV/RADAR/1	5SQ1	K13
** ON A/C NOT FOR ALL
FOR FIN: 2DD1 (DETICE, L)
122VU	ANTI ICE/ICE DET/L	4DD1	V12
FOR FIN: 2DD2 (DETICE, R)
122VU	ANTI ICE/ICE DET/R	4DD2	V13

4. Procedure
Subtask 30-81-31-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the Ice Detector
(1) Remove the screws (5).

CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.

(2) Disconnect the electrical connector (3).
(3) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(4) Remove the ice detector (4).
(5) Remove and discard the joint (2).
(6) Put the PLUG-BLANKING in each disconnected line end.

[Rev.10 from 2021] 2026.04.01 04:01:29 UTC