_________

 (Ref. Fig. 401/TASK 30-81-21-991-002) Subtask 30-81-21-420-051
 A. Installation of the lighted icing indicator NOTE : Two persons are necessary to install the lighted icing indicator
____
 - one person out of the aircraft to hold the lighted icing indicator
 -a second person in the aircraft, to install the lighted icing indicator.
 (1)
 Install the icing indicator (3), the washer (2) and the nut (1). NOTE : Do an electrical bonding of the icing indicator (3) when you

____
 install it.

 (2)
 TORQUE the nut (1).

 (3)
 Connect the electrical connector (6).

 (4)
 Attach the electrical cable (4) against the draining pipe (7) with the cable ties (5).

 Subtask 30-81-21-914-050
 B. Sealant Application WARNING : USE SOLVENTS/CLEANING AGENTS, SEALANTS AND OTHER SPECIAL
_______ MATERIALS ONLY WITH A GOOD SUPPLY OF AIR. OBEY THE MANUFACTURERS INSTRUCTIONS. PUT ON PROTECTIVE CLOTHING. DO NOT GET THEM IN YOUR MOUTH. DO NOT SMOKE. DO NOT BREATHE THE GAS. THESE MATERIALS ARE POISONOUS, FLAMMABLE AND SKIN IRRITANT. GET MEDICAL HELP IF YOUR SKIN OR EYES BECOME IRRITATED.
 (1) Apply SEALANTS (Material No. 09-019) around the lighted icing indicator base which touches the external surface of the retainer.
 1EFF : ALL 1 30-81-21Page 408 1 1 May 01/05R 1 1 1CES 1

 (2) Clean the external surfaces of the structure with CLEANING AGENTS (Material No. 11-003) to remove the remaining sealant from the structure.
 5. Close-up
________
 Subtask 30-81-21-865-055

 A. Remove the safety clip(s) and the tag(s) and close this(these) circuit
 breaker(s): R 1DG1, 4DG1, 5DG1, 5SQ1, 1DG2, 4DG2, 5DG2, 5SQ2
 Subtask 30-81-21-410-052
 B. Close Access
 (1)
 Install the vertical lining panel 211MW.

 (2)
 Remove the access platform(s).

 (3)
 Make sure that the work area is clean and clear of tool(s) and other items.

 Subtask 30-81-21-710-050
 C. Do the operational test of the instrument and panel integral lighting (Ref. TASK 33-13-00-710-001).
 Subtask 30-81-21-862-052
 D. De-energize the aircraft electrical circuits
 (Ref. TASK 24-41-00-862-002).

 TASK 30-81-21-960-001
 Replacement of the LED of the Lighted Icing Indicator (16DD)

 1.
 Reason for the Job

__________________
 Self Explanatory

 2.
 Job Set-up Information

______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s) No specific 1 ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE R
R B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-41-00-862-002  De-energize the Aircraft Electrical Circuits Supplied from the External Power 24-42-00-861-001 Energize the Ground Service Network from the External Power 30-81-21-991-003 Fig. 402
 3. Job Set-up
__________
 Subtask 30-81-21-861-052

 A. Energize the ground service network
 (Ref. TASK 24-42-00-861-001).

 Subtask 30-81-21-010-053
 B. Get Access
 (1) Put an ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE in position on the side of the aircraft to get access to the lighted icing indicator.

 Subtask 30-81-21-865-056
 C. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
49VU LIGHTING/ICE AND STBY/COMP/LIGHT 1LF H04
 4. Procedure
_________
 (Ref. Fig. 402/TASK 30-81-21-991-003)
 Subtask 30-81-21-020-052

 A. Removal of the LED of the Lighted Icing Indicator
 (1)
 Loosen the cover (1) and remove it.

 (2)
 Remove the diffuser (2).

 (3)
 Remove and discard the LED (3) from its bracket (5).

 (4) Remove and discard the seal (4).
 Subtask 30-81-21-420-052

 B. Installation of the LED of the Lighted Icing Indicator R (1) Install a new seal (4) and a new LED (3) on the bracket (5).
 (2) Install the diffuser (2).
　
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