GENERAL AEROSPACE
Boeing 737-300
MAINTENANCE MANUAL
EFFECTIVITY
PW245
34-53-11GA
DRAWING # GA-KD28-ATC-MM
Page 402
Use and disclosure shall be in accordance with the proprietary legend located on the cover of this document
Aug 15/10
D.
Equipment
(1)
Sealing gun - 6-inch length cartridge, Senco Research, or equivalent (not required for material furnished in
tubes)
(2)
Bonding meter (AMM 20-22-01)
(3)
Varnish brush - 1- or 2-inch (Commercial)
(4)
Spatula (Commercial)
E.
Procedure
(1)
Apply a layer of BMS 3-23 corrosion-preventive compound to the mating surfaces of the antenna and the
airplane structure (AMM 51-21-31/701).
(2)
Install the ATC antenna:
(a)
Remove the dust caps from the electrical connectors.
(b)
Connect the coaxial cables to the ATC antenna.
(c)
Put the antenna into its position and install the screws.
(3)
Do this task to do a check of the resistance between the antenna base and the airplane skin. Electrical
Bonding Check (SWPM 20-20-00).
(a)
Make sure the resistance is not more than 0.001 ohm.
(4)
Apply the weather aerodynamic sealant (BMS 5-95) to the outer edge of the antenna (AMM 51-31-00/201).
(5)
Remove the unwanted sealant from around the antenna base (AMM 51-31-00/201).
(6)
Remove the DO-NOT-CLOSE tags, and close these circuit breakers:
(a)
P18 Load Control Center - Left
1)
ATC-1 AC
2)
ATC-1 DC
3)
TCAS Speaker
(b)
P6 Load Control Center - Right
1)
ATC-2 AC
2)
ATC-2 DC
F.
ATC Antenna Test
(1)
Supply electrical power (AMM 24-22-00/201).
(2)
Set the transponder select switch on the ATC Control Panel to the applicable transponder.
(a)
If ATC-1 selected, start the self test on the front of the transponder.
(b)
Airplane with Collins ATC transponder;
Make sure the LED’s sequence that follows occurs:
1)
All LED’s comes on for about one second
2)
All red LED’s go off
3)
The green LED stay on
(c)
Release the TEST switch.
(d)
IF ATC-2 selected, start the self test on the front of the transponder.
(e)
Airplane with Collins ATC transponder;
Make sure the SELF TEST light illuminates
(f)
Release the TEST switch.
(g)
Press RESET for ATC Transponder 2.
(3)
Set the ATC system to STBY.
