Jim Stewart wrote:
I was thumbing through the FAR/AIM last night,
trying to fall asleep and I noticed something
[quoted text clipped - 3 lines]
FAR says not to operate an out-of-calibration
transponder at all, and the FAR says to operate
^
Should say AIM
it with altitude reporting off.

On the face of it, the FAR would have the authority
of law behind it. Any clarification?

Since you didn't reference any particular passages, I'll take a blind stab
at this one.

There is an FAR that says you should not operate a transponder that has not
had a certification within the last 24 months. While FARs don't have the
authority of law, they do have the authority of regulation.

I'm guessing that the AIM reference you're talking about is the one that
refers to your turning off altitude reporting if ATC notes that the reported
altitude differs from actual altitude. In that case, it's a temporary
measure to allow ATC to contiue seeing your aircraft on their scope on that
particular flight. You still need to get the problem checked out. You can't
just keep flying around with the Mode/C turned off.

John Galban=====N4BQ (PA28-180)

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