S 715-011
(2)
Make sure the VHF communication system are serviceable (AMM 23-21-00/501).
S 715-010
(3)
Make sure the HF communication systems are serviceable (AMM 23-11-00/501).
S 865-003
(4)
Set the correct SELCAL code on the SELCAL-1 and the SELCAL-2 decoders.
NOTE: The airplane SELCAL code is identified on a placard found on
____ the main instrument panel. Do not speak when you send a code.
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A 737-300/400/500MAINTENANCE MANUAL
S 735-001
(5) Do a test of the SELCAL system:
(a)
BEJ 001-104;
Set the Captain's audio selector panel to the VHF-1
communications system.
(b)
BEJ 001-104;
Tune the VHF-1 to an approved test frequency.
1) Make sure you can communicate on this system.
(c)
BEJ 001-104; Tell the control tower to transmit the SELCAL code for the VHF-1 communications system.
NOTE: If the transmitting station is not available, make a
____ SELCAL coded transmission with a SELCAL ground station encoder. Make sure the transmissions are approved.
1) Make sure you hear a continuous repeated chime from the aural warning speaker. 2) Make sure the SELCAL-1 light comes on.
(d)
BEJ 001-104; Push the PUSH-TO-RESET switch on the SELCAL control panel. 1) Make sure the light goes off and the chime stops.
(e)
Set the Captain's audio selector panel to the VHF-2
communication system.
(f)
Tune the VHF-2 to an approved frequency.
(g)
Tell the control tower to transmit the SELCAL code for the VHF-2 communications system.
NOTE: If the transmitting station is not available, make a
____ SELCAL coded transmission with a SELCAL ground station encoder. Make sure the transmissions are approved.
1) Make sure you hear a continuous repeated chime from the aural warning speaker. 2) Make sure the SELCAL-2 light comes on.
(h)
Push the PUSH-TO-RESET switch on the SELCAL control panel.
(i)
Make sure the light goes off and the chime stops.
(j)
BEJ 001-104;
Set the Captain's audio selector panel to the HF-1
communications system.
NOTE: The HF-1 system supplies an input to the SELCAL-1.
____
(k) BEJ 001-104;
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A
737-300/400/500MAINTENANCE MANUAL
Tune the HF-1 system to an approved test frequency.
(l) BEJ 001-104; Tell the control tower to transmit the SELCAL code for the HF-1 communications system.
NOTE: If the transmitting station is not available, make a
____ SELCAL coded transmission with a SELCAL ground station encoder. Make sure the transmissions are approved.
1) Make sure you hear a continuous repeated chime. 2) Make sure the SELCAL-1 light comes on.
(m)
BEJ 001-104; Push the PUSH-TO-RESET switch on the SELCAL control panel. 1) Make sure the light goes off and the chime stops.
(n)
Set the Captain's audio selector panel to the HF-2 communications system.
NOTE: BEJ 001-104 HF-2 system supplies an input to the SELCAL-2. BEJ 105-999 HF-2 system provides an input to SELCAL-1.
(o)
Tune the HF-2 system to an approved test frequency.
(p)
Tell the control tower to transmit the SELCAL code for the HF-2 communications system.
NOTE: If the transmitting station is not available, make a
____ SELCAL coded transmission with a SELCAL ground station encoder. Make sure the transmissions are approved.
1) Make sure you hear a continuous repeated chime. 2) BEJ 001-104; Make sure the SELCAL-2 light comes on. 3) BEJ 105-999; Make sure the SELCAL-1 light comes on.
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