On The Ground (continued)
Indication Problem
MSG light stays on
after power-up.
Displayed message is:
LORAN1
STATIONS
HAVE
LOW SNR
(continued)
Aircraft may be parked near
something interfering with the signal
(APU, hanger, high-voltage lines).
Action
Movethe aircraft. Thesystemusually
does not work inside a hanger.
Indication Problem
MSG light stays on
after power-up.
Displayed message is:
IN USE POSITION
SENSOR CANNOT
COMPUTE
LAT/LON
The In-Use position sensoris not able
to calculate a position
Action
Select a different position sensor.
Indication Problem
MSG light is on after
run-up. Displayed
Message is:
LORAN1[or 2]
EST POS ERROR
(EPE) IS 1.8NM
Noise generated from the aircraft
alternator or magneto.
Action
Contact II Morrow dealer or factory.
317
Apollo NMS Troubleshooting
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