Some transponders (UPS SL70 for example) give a readout of the altitude they
are reporting. Fairly easy to identify problems.
regards,
MP
----- Original Message -----
From: "Fergus Kyle" <VE3LVO@rac.ca>
Subject: Re: Faulty Altitude reporting
> > When you are flying here in the USA just ask "center" what your Mode C
is>
> reporting. If its different than your altitude, center will most likely
ask
> you> to turn off the "Mode C " on the transponder.>
> > Jim Brown
>
> Jim:
> I guess that's OK if you ask every minute. By the time centre
> has discover aircraft above you deviating left right and centre, they
won't
> have too much time to ask you to turn it off. These faults occur at the
> speed of light - and so do the avoidance manoeuvres (to say nothing of the
> myriad aroused pilots.)
> I think I will ask if there's a warning I can rig up.
> Cheers, Ferg
>
>
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