(2)
Periodic maintenance is necessary to test and restore the coating on the windshield surface (AMM 30-43-00/201).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
WINDSHIELD RAIN REPELLENT SYSTEM - MAINTENANCE PRACTICES
________________________________________________________
1. General_______
A. This procedure lists the equipment necessary to test and reapply the hydrophobic coating.
B. A vendor kit is necessary to do this procedure.
TASK 30-43-00-302-001
2. Hydrophobic Coating Maintenance Practices__________________________________________
A. General
(1) The maintenance procedures for the hydrophobic coating are contained in the Master Kit listed below.
B. References
NOTE: These references are in the Master Kit.
____
(1)
Maintenance Assessment, Aplication Procedures for Boeing Aircraft Models (P/N DSS 1022)
(2)
Coating-Efficiency Assessment - Video Tape
(P/N DSS 1023)
(3)
Re-application and First Time Application - Video Tape (P/N DSS 1024)
C. Equipment
(1) Master Kit Complete
(P/N DSS 1020)
PPG Industries, Inc
Aircraft Products Sales
P.O Box 040004
Huntsville, AL. 35804 USA
FAX 205-851-8822
(2) Stand - 15 feet minimum
D. Prepare for the Test/Re-application
S 862-002
WARNING: BEFORE YOU DO MAINTENANCE ON THE WINDSHIELD, OPEN THE WINDOW
_______ HEAT CIRCUIT BREAKERS. IF YOU DO NOT OPEN THESE CIRCUIT BREAKERS DURING MAINTENANCE, YOU CAN GET AN ELECTRICAL SHOCK WHEN YOU TOUCH THE WINDOW.
(1) Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a) P7, Overhead Circuit Breaker Panel
1) 7E2, WSHLD RAIN REPEL
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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747-400 MAINTENANCE MANUAL
2) 7E26, WSHLD WASH
(b)
P6, Main Power Distribution Panel
1) 6B34, WINDOW HEAT 1L PWR
2) 6B17, WINDOW HEAT 1R PWR
(c)
P180, DC Power Distribution Panel
1) 180H26, WDO HEAT CONT 1L
2) 180H12, WDO HEAT CONT 1R
E. Procedures
NOTE: Use the procedure in the master kit to do these maintenance tasks:
____ S 162-003
(1)
Cleaning Procedure
S 212-004
(2)
Coating Efficiency Assessment
S 352-005
(3)
Coating Application
F. Return the Airplane to Its Usual Condition
S 862-006
(1) Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a)
P6, Main Power Distribution Panel
1) 6B34, WINDOW HEAT 1L PWR
2) 6B17, WINDOW HEAT 1R PWR
(b)
P180, DC Power Distribution Panel
1) 180H26, WDO HEAT CONT 1L
2) 180H12, WDO HEAT CONT 1R
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