philo beddoe
Well-known member
- Joined
- Jun 21, 2004
- Posts
- 167
The real issue here is that academics aside, there is little chance of a "pure" lost comm situation, where everything works except comm.
Let's look at lost comm troubleshooting:
Can't hear ATC-----------------
Check volume knob
Check squelch (some radios)
Check all the mic buttons (hand mic also) for sticking
Try hand mic
Try other radio
Try overhead speaker
Check audio panel
Check circuit breakers/fuses
Can hear ATC, but can't transmit----------------------
Try other mics
Try hand mic
Try other radio
Try other PTT on other yoke
Try other headset
Check ALL circuit breakers. (I read one example where the transmitter relay was on the same CB with some other unrelated piece of equipment)
And the one that many people forget:
Find the nearest VOR with duplex FSS transmission (i.e. YOU transmitt on 122.1) Freq will read 122.1R or other freq. Turn up volume. Wait and see if FSS calls you (if your center controller is on the ball, they will try this). Respond by identing. Fly as cleared.
Your nav doesn't work either you say? Well this is no longer a lost comm scenario, is it? What we've got here is either an avionics bus failure or total electrical failure. You are on your own regarding regs and recommended procedure. Common sense is now required. Good luck, and we're all counting on you.
Let's look at lost comm troubleshooting:
Can't hear ATC-----------------
Check volume knob
Check squelch (some radios)
Check all the mic buttons (hand mic also) for sticking
Try hand mic
Try other radio
Try overhead speaker
Check audio panel
Check circuit breakers/fuses
Can hear ATC, but can't transmit----------------------
Try other mics
Try hand mic
Try other radio
Try other PTT on other yoke
Try other headset
Check ALL circuit breakers. (I read one example where the transmitter relay was on the same CB with some other unrelated piece of equipment)
And the one that many people forget:
Find the nearest VOR with duplex FSS transmission (i.e. YOU transmitt on 122.1) Freq will read 122.1R or other freq. Turn up volume. Wait and see if FSS calls you (if your center controller is on the ball, they will try this). Respond by identing. Fly as cleared.
Your nav doesn't work either you say? Well this is no longer a lost comm scenario, is it? What we've got here is either an avionics bus failure or total electrical failure. You are on your own regarding regs and recommended procedure. Common sense is now required. Good luck, and we're all counting on you.
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