Why not be legal and smart and just get it checked. If it is operating
within specs it takes about 10 minutes and can normally be done right at
your aircraft using portable equipment by a certified shop. The last check
of the transponder and altitude encoder on my bird cost $95 by the shop at
KLVK. There is nothing that says the transponder/encoder and pitot static
check must happen during the annual inspection.

John Severyn
"Matt" wrote in message
...
Looking over my 152's logs, it appears the transponder has not been
inspected since the altitude encoder was installed, about 10 years ago.
Is it legal (not necessarily smart) to pull the circuit breaker, placard
the transponder as inoperative, and continue to fly until I get it
inspected at the next annual? I would be staying clear of class B and C.

FYI, the mode C is working fine.

Thanks for all comments.

Matt