(b)
Put the life rafts in their correct positions under the closet.
(c)
Attach the safety straps in the seat tracks.
(d)
Tighten the safety straps.
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747-400 MAINTENANCE MANUAL
LIFE VESTS-INSPECTION/CHECK
___________________________
1. General_______
A. This procedure contains one task. It is to do a visual inspection/check of the life vests.
B. Life vests for the crew are attached to the rear of each seat in the flight compartment.
TASK 25-62-05-206-001
2. Do an Inspection/Check of the Life Vests________________________________________
A. Access
(1) Location Zone
200 Upper Half Fuselage
B. Procedure
S 216-009
(1)
Make sure there is a life vest attached to the rear of each seat for the flight crew.
S 216-003
(2)
Make sure each life vest is sealed in its protective package and that there is no damage to the package. If there is damage to the package, make sure there is no damage to the life vest.
(3)
Repair or replace the life vest if it is necessary.
S 426-004
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747-400 MAINTENANCE MANUAL
EMERGENCY SIGNALING EQUIPMENT - DESCRIPTION AND OPERATION
_________________________________________________________
1. General_______
A. Emergency signaling equipment installed in the upper deck and flight compartment consists of emergency radio beacons. Each item of emergency signal equipment is readily accessible and each location is clearly marked.
2. Emergency Radio Beacons (Fig. 1)_______________________
A. The beacon transmits a swept-tone-modulated signal simultaneously on both civil and military international VHF aeronautical distress frequencies. Antenna erection and battery activation are initiated by water immersion.
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747-400 MAINTENANCE MANUAL
EMERGENCY LOCATOR TRANSMITTER - MAINTENANCE PRACTICES
______________________________________________________
1. General
A. This procedure has these tasks:
(1)
A test of the emergency locator transmitter
(2)
The removal of the battery
(3)
The installation of the battery.
B. Touch or move the ELT only when it is necessary.
TASK 25-63-03-702-001
2. Emergency Locator Transmitter (ELT) Test
________________________________________
A. Standard Tools and Equipment
(1)
Voltmeter
(2)
FM Communications Receiver
(3)
DC Power Supply
(4)
Radiation Indicator
B. Access
(1) Location Zone 200 Upper Deck Fuselage
C. Procedure
S 842-027
(1) Disconnect the ELT antenna.
CAUTION: DO THIS TEST IN A SCREENED ROOM TO PREVENT DISTRESS
_______ SIGNALS. A TRANSMITTER WITH A RADIATION INDICATOR GIVES OFF FULL RADIATION ON THE TWO DISTRESS FREQUENCIES.
IF NEAR AN AIRPORT WHERE NO SCREENED ROOM IS AVAILABLE, ADVISE THE TOWER OF THE TEST TO IDENTIFY THE DISTRESS SIGNAL AS INCORRECT. KEEP CHECKS TO A MINIMUM OF TIME.
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