SOUTHERN AVIONICS COMPANY
“H” Antenna
5-1
PREVENTIVE MAINTENANCE
5 PREVENTIVE MAINTENANCE
1. Maintain all insulator surfaces of the antenna and antenna coupler free of all contamination,
salt spray, and paint. Any contamination on the insulator will cause reduced reception range of
the radiobeacon signal, turning problems and broadband RFI, especially during damp weather.
As required, the insulators should be cleaned by first turning off the radiobeacon and then
cleaning the insulators with fresh water. Polish the insulator surfaces with a good silicone-based
polish such as “Star Brite Car Polish”. The wax will cause water beading, which will reduce the
effect of condensing moisture on transmitter range. Then turn on the radiobeacon and resume
normal operation.
2. Clean and inspect insulator bushing. If there is evidence of “arc tracking,” characterized by
black carbon deposits, replace the insulator bushing.
3. Coat pivot and bolt surfaces of the antenna poles with a rust preventative, such as “WD-40”.
Summary of Contents for "H" Helipad
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Page 17: ...SOUTHERN AVIONICS COMPANY H Antenna 3 3 INSTALLATION Figure 3 1 BUSHING INSTALLATION...
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