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23-71-02
ALL ú ú 03 Page 402 ú Dec 20/95
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A
757 MAINTENANCE MANUAL
UNDERWATER LOCATOR BEACON - MAINTENANCE PRACTICES
_________________________________________________
1. General_______
A. This procedure has these tasks.
(1)
A removal of the underwater locator beacon (ULB).
(2)
A replacement of the ULB battery.
(3)
An operational test of the ULB.
(4)
An installation of the ULB.
B. The underwater locator beacon (ULB) is attached to the front of the voice recorder.
C. The voice recorder is installed on the E7 rack in the aft overhead passenger compartment.
TASK 23-71-03-002-013
2. Underwater Locater Beacon Removal (Fig. 201)_________________________________
A. General
(1) The ULB has a battery as the power source. The ULB has no external electrical connections.
B. References
(1)
AMM 23-71-01/401, Voice Recorder
(2)
AMM 25-22-02/401, Lowered Ceiling Panels
C. Access
(1) Location Zones 253 Area Above Passenger Compartment Ceiling, Left - Section 46 253 Area Above Passenger Compartment Ceiling, Right - Section 46
D. Removal Procedure
S 012-014
(1)
Open the ceiling panel (AMM 25-22-02/401) in the aft passenger compartment to get access to the voice recorder.
(2)
Do this task: Voice Recorder Unit Removal (AMM 23-71-01/401).
S 022-002
(3)
Remove the underwater locator beacon from the voice recorder:
(a)
Remove the four screws from the coverplate on the ULB cradle.
(b)
Remove the coverplate.
(c)
Pull the ULB from the ULB cradle.
S 022-058
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
23-71-03
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757 MAINTENANCE MANUAL
COVER PLATE
SCREW
UNDERWATER LOCATOR BEACON (ULB)
SEE
UNDERWATER LOCATOR BEACON
A
Underwater Locator Beacon Installation
Figure 201 (Sheet 1)
E04652
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LORAL/FAIRCHILD VOICE RECORDER ú 23-71-03
MODEL: A100A TAPE BASED ú
ú 03 ú BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. Page 202Dec 20/95
A
757
MAINTENANCE MANUAL
UNDERWATER LOCATOR BEACON
UNDERWATER LOCATOR BEACON
Underwater Locator Beacon Installation
Figure 201 (Sheet 2)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù.
LORAL/FAIRCHILD VOICE RECORDER ú 23-71-03
MODEL: SOLID STATE ú
ú 03 Page 203
ú Dec 20/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
E10008
A
757
MAINTENANCE MANUAL
UNDERWATER LOCATOR BEACON
Underwater Locator Beacon Installation
Figure 201 (Sheet 3)
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