Deactivation of the Glazing Panel of the Wing-Tip Navigation Light

TASK 33-41-00-040-001-A
Deactivation of the Glazing Panel of the Wing-Tip Navigation Light

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:

THE FLIGHT CONTROLS
THE FLIGHT CONTROL SURFACES
THE LANDING GEAR AND THE RELATED DOORS
COMPONENTS THAT MOVE.

MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.

WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.

CAUTION: IF YOU DO A TEMPORARY REPAIR TO A CRACK, VISUALLY EXAMINE THE CRACK EACH DAY, OR AT INTERVALS OF TEN FLIGHT CYCLES. IF, AFTER FIVE CHECKS, THE DIMENSION OF THE CRACK IS NOT LARGER, EXAMINE THE CRACK AT INTERVALS OF FIFTY FLIGHT CYCLES.

1. Reason for the Job
This deactivation task is not related to an AFM-CDL/MMEL item.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE
No specific	AR	PAPER - ABRASIVE, FINE
No specific	AR	SAFETY BARRIER(S)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)
No specific	AR	WATER - SOAPY SOLUTION

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.05RQB9)	Adhesive Film Tape-Erosion Protective Polyurethane - 0.36mm Legacy
(Material No.06AFB1)	Polysulfide Sealant-Windshield Fillet -
(Material No.14SBA1)	Textile-Lint free Cotton -
No specific	PR1829 Polysulphide Sealant for Glazings

C. Referenced Information

REFERENCE	DESIGNATION
TASK 57-37-12-000-802-A	Removal of the Navigation-Light Glazing Panel
TASK 57-37-12-400-802-A	Installation of the Navigation-Light Glazing Panel
Repair of the Wing-Tip Navigation Light Glazing Panel ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 33-41-00-941-050-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
(2) Put a WARNING NOTICE(S) on panel 25VU to tell persons not to operate the navigation lights or the strobe lights.
(3) Put the ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE below the applicable zone 534 (634).

Subtask 33-41-00-865-052-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
122VU	LIGHTING/EXT LT/NAV1/AND LOGO/LT	1LA	T03
** ON A/C NOT FOR ALL
122VU	LIGHTING/EXT LT/NAV2/AND LOGO/LT	2LA	T02
122VU	LIGHTING/WING/STROBE	10LV	V05
** ON A/C NOT FOR ALL
122VU	LIGHT/EXT LT NAV1/AND LOGO/LT	1LA	T03

4. Procedure
Subtask 33-41-00-040-050-A ** ON A/C NOT FOR ALL

A. Deactivation of the Wing-Tip Navigation Light Glazing Panel
(1) For a pre modification 25268 glazing panel:
(a) You must replace the glazing panel (Ref. AMM TASK 57-37-12-000-802), (Ref. AMM TASK 57-37-12-400-802) if it has one of these conditions:

a longitudinal crack of more than 153 mm (6.02 in.) in length
a vertical crack of more than 25.4 mm (1 in.) in length
broken glazing.

(b) If the glazing panel has a longitudinal crack of less than 153 mm (6.02 in.) or a vertical crack of less than 25.4 mm (1 in.), do the repair that follows:
1 Drill a 6.4 mm (0.252 in.) dia. hole at the end of the crack.
2 Use PAPER - ABRASIVE, FINE to make the repair area rough. The repair area is 5.0 mm (0.20 in.) more than and all around the tape.
3 Clean the surface of the glazing panel with Textile-Lint free Cotton - (Material No.14SBA1) made moist with warm WATER - SOAPY SOLUTION.
4 Dry the surface of the glazing panel with a clean Textile-Lint free Cotton - (Material No.14SBA1) .
5 Apply Adhesive Film Tape-Erosion Protective Polyurethane - 0.36mm Legacy (Material No.05RQB9) to cover the crack and the stop drilled hole.

NOTE: Make sure that the tape is installed correctly and has no bubbles, wrinkles or tears in it.

6 Let the tape cure for not less than 15 mins at a minimum temperature of 15 deg.C (59.00 deg.F).
7 Make an entry in the aircraft technical log that the glazing panel has a temporary repair.

8 Examine the temporary repair(s) for an increase in the length of the crack(s).
(2) For a post modification 25268 (pre modification 28219) glazing panel:
(a) You must replace the glazing panel (Ref. AMM TASK 57-37-12-000-802), (Ref. AMM TASK 57-37-12-400-802) if it has one of these conditions:

a crack of more than 25 mm (0.9843 in.) in length
more than 3 cracks from one bolt hole
more than 2 cracks from one bolt hole are in the direction of the panel edge
more than 6 bolt holes have cracks
more than 2 adjacent bolt holes have cracks
the glazing is broken.

(b) If the glazing panel has a crack of more than 12.0 mm (0.47 in.) and is less than 25 mm (0.9843 in.) in length, do the temporary repair that follows:

NOTE: Cracks that are in the direction of the panel edge must not be stop drilled.

1 Drill a 6.4 mm (0.252 in.) dia. hole at the end of the crack.
2 Clean the surface of the glazing panel with Textile-Lint free Cotton - (Material No.14SBA1) made moist with warm WATER - SOAPY SOLUTION.
3 Dry the surface of the glazing panel with a clean Textile-Lint free Cotton - (Material No.14SBA1) .
4 To make a weather seal, apply Polysulfide Sealant-Windshield Fillet - (Material No.06AFB1) or PR1829 Polysulphide Sealant for Glazings to cover the crack and stop drilled hole.
5 Make an entry in the aircraft technical log that the glazing panel has a temporary repair.

6 Examine temporary repair(s) for an increase in the length of the crack(s).
(3) For a post modification 28219, 30791, 30889 or 32153 glazing panel:
(a) You must replace the glazing panel (Ref. AMM TASK 57-37-12-000-802), (Ref. AMM TASK 57-37-12-400-802) if it has one of these conditions:

more than one crack
a vertical or longitudinal crack of more than 30 mm (1.1811 in.) in length
a crack in the direction of the panel edge
minimum thickness after polishing is less than 3.33 mm (0.1311 in.)
broken glazing
damage to the steel shield.

(b) If the glazing panel has a vertical or longitudinal crack of 30 mm (1.1811 in.) or less, do the repair that follows:

NOTE: A crack in the direction of the panel edge must not be stop drilled.

1 Drill a 6.4 mm (0.2520 in.) dia. hole at the end of the crack.
2 Use PAPER - ABRASIVE, FINE to make the repair area rough. The repair area is 5.0 mm (0.1969 in.) more than and all around the tape.
3 Clean the surface of the glazing panel with Textile-Lint free Cotton - (Material No.14SBA1) made moist with warm WATER - SOAPY SOLUTION.
4 Dry the surface of the glazing panel with a clean Textile-Lint free Cotton - (Material No.14SBA1) .
5 To make a weather seal, apply Polysulfide Sealant-Windshield Fillet - (Material No.06AFB1) or PR1829 Polysulphide Sealant for Glazings to cover the stop drilled hole.
6 Apply Adhesive Film Tape-Erosion Protective Polyurethane - 0.36mm Legacy (Material No.05RQB9) to cover the crack and the stop drilled hole.

NOTE: Make sure that the tape is installed correctly and has no bubbles, wrinkles or tears in it.

7 Let the tape cure for not less than 15 mins at a minimum temperature of 15 deg.C (59.00 deg.F).
8 Make an entry in the aircraft technical log that the glazing panel has a temporary repair.

9 Examine the temporary repair for an increase in the length of the crack.

5. Close-up
Subtask 33-41-00-865-053-A ** ON A/C NOT FOR ALL

A. 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
122VU	LIGHTING/EXT LT/NAV1/AND LOGO/LT	1LA	T03
** ON A/C NOT FOR ALL
122VU	LIGHTING/EXT LT/NAV2/AND LOGO/LT	2LA	T02
122VU	LIGHTING/WING/STROBE	10LV	V05
** ON A/C NOT FOR ALL
122VU	LIGHT/EXT LT NAV1/AND LOGO/LT	1LA	T03

Subtask 33-41-00-942-050-A ** ON A/C NOT FOR ALL

B. Put the aircraft back to its initial configuration.
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the safety barriers.
(3) Remove the WARNING NOTICE(S).
(4) Remove the access platform(s).
(5) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.04.01 00:54:50 UTC