(d)
Use a spatula to make sure the sealant is a smooth symmetrical 45-degree fillet
(e)
Let the sealant dry until it cannot be dented
(f)
Apply Boeing color 702 white gloss enamel, BMS 10-60 to the not painted surface of the antenna plate.
S 864-050
(10) Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a) P7 Overhead Circuit Breaker Panel
1) 7A6 NAV RADIO MMR L
2) 7B6 NAV RADIO MMR C
3) 7B17 NAV RADIO MMR R
S 844-051
(11) Do this task to remove the door locks: Nose Gear Door Lock Removal (Ref 32-00-30/201).
(a) Close the nose gear doors.
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A
747-400
MAINTENANCE MANUAL
SEE B SEE A
LEFT AND CENTER TRACK ANTENNA GLIDE SLOPE ACCESS PANEL
DUAL GLIDE SLOPE LEFT AND CENTER TRACK ANTENNA
(2 PLACES) CONNECTOR COAXIAL
ACCESS TRACK ANTENNA GLIDE SLOPE
FWD
A LEFT AFT NOSE GEAR DOOR
Glide Slope Track Antenna Installation Figure 401 (Sheet 1)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
RIGHT GLIDE
SLOPE TRACK
ANTENNA ACCESS
PANEL
RIGHT GLIDE SLOPE
TRACK ANTENNA
SEE C
FWD
RIGHT AFT NOSE GEAR DOOR
COAXIAL B
CONNECTOR
DB561
RIGHT GLIDE SLOPE TRACK ANTENNA
RIGHT GLIDE SLOPE TRACK ANTENNA (REMOVED)
C
Glide Slope Track Antenna Installation Figure 401 (Sheet 2)
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A
747-400 MAINTENANCE MANUAL
VOR/LOC ANTENNA SWITCH - REMOVAL/INSTALLATION
_____________________________________________
1. General
_______
A. This subject has two tasks. The first task is the removal of the VOR/LOC antenna switch. The second task is the installation of the VOR/LOC antenna switch. Parts of the ILS System Test must be done after the installation of the VOR/LOC antenna switch.
TASK 34-31-05-004-017
2. VOR/LOC Antenna Switch Removal
______________________________
A. General
(1)
There are three VOR/LOC antenna switches installed in the E1 electronics equipment rack in the main equipment center. They are installed on the left end of the No. 6 shelf. The equipment numbers are B63 for the left, B64 for the right, and B299 for the center VOR/LOC antenna switches.
(2)
The removal procedures are the same for each VOR/LOC antenna switch.
B. Access
(1) Location Zone 117 Electrical and Electronics Compartment, LH
C. Procedure
S 864-018
(1) Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a) P7 Overhead Circuit Breaker Panel
1) 7D22 ILS ANT SW L
2) 7D23 ILS ANT SW C
3) 7D24 ILS ANT SW R
S 024-019
(2) Remove the VOR/LOC antenna switch:
(a) Disconnect the coaxial cables and the electrical cable from the VOR/LOC antenna switch
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