Ferg:
When I replied to your question I assumed that you knew , that with me talking
to center, that I was on a flight plan or using flight following. That I was
on an assigned altitude and would not deviate from that assigned altitude
unless approved by the controller. At that point in time my original statement
will clear up any problem with Mode C reporting to the controller.
If you are VFR just boring holes in the sky, and not talking to someone then
your statement is correct.
By the way if you take the plane to an avionics shop they can check what the
transponder is reporting as opposed to what the altimeter is showing. If you
are flying IFR this check has to be done every two years to remain legal.
Regards
Jim Brown
Fergus Kyle wrote:
> > 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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