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737-300/400/500MAINTENANCE MANUAL
(n)
Set the FIRE test switch on the P8-1 ENG & APU fire control panel to FIRE. 1) Make sure you hear the bell sound.
(o)
Release the FIRE test switch.
1) Make sure the bell sound stops.
(p)
Push the MACH AIRSPEED WARNING TEST switches on the aft overhead panel one at a time. 1) Make sure you hear the clacker sound while you push each
test switch.
(q)
Push the PILOT CALL switch on the external power receptacle panel. 1) Make sure you hear the HI chime sound once.
(r)
Do a check of the SELCAL chime signal as follows: 1) Turn on the SELCAL and related radio systems (AMM 23-28-00/501). 2) Make sure you can speak to and hear a person in the control
tower. 3) Have a control tower person set the airplane SELCAL code.
NOTE: The airplane SELCAL code is on the placard found on
____ the pilots main instrument panel.
NOTE: If the transmitting station is not available, make a
____ SELCAL coded transmission with a SELCAL ground station encoder. Make sure the transmission are approved.
4) Have the person in the control tower transmit the SELCAL
code. 5) Make sure you hear the chime sound. 6) Turn off the SELCAL and radio systems.
F. Put the Airplane Back to its Usual Condition
S 865-023
(1)
Put all the switches, flaps, and thrust levers back to their usual positions.
S 215-024
(2)
Make sure the aluminum or copper deactuator shield (slug) is removed from the down lock sensor switch of the landing gear.
(3)
Remove electrical power if it is not necessary (AMM 24-22-00/201).
S 865-025
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737-300/400/500MAINTENANCE MANUAL
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