Re: Random thoughts 2




zulusoars@xxxxxxx wrote:
.. . . snip . . .
If you put a transponder in your glider - either with or without an
encoder - it needs to be calibrated and so noted in your aircraft log
book. You are then required to have checked every twenty-four months.
If you are going to put a transponder in the glider, then spring for an
encoder - In for a penny, in for a pound and all that. Without the
encoder ATC as well as TCAS only gets azimuth and range. With the
encoder you get the third demension, altitude.
Sure beats ending up in Denver as a pitot cover on a B-767!

Billy Hill, Zulu

Zulu,

Having owned a few junky older airplanes (like old Bonanzas) with only
Mode A transponders, I can't recall any requirement for calibration or
any recurrent inspection of these. If you're flying IFR, you have to
have a pitot/static check every two years, and if you have Mode C, you
have to have the encoder calibrated, but I wasn't aware of anything
other than that.

Ed

.



Relevant Pages

  • Re: Random thoughts 2
    ... encoder - In for a penny, in for a pound and all that. ... I can't find any reference in 91.413to encoder calibration, and when I have the required 2 year test done, only the encoder reading at field elevation is checked. ... I don't think the encoder calibration check is required for VFR operation. ...
    (rec.aviation.soaring)
  • Re: Random thoughts 2
    ... encoder - In for a penny, in for a pound and all that. ... It makes no reference to VFR or IFR flight. ... I can't find any reference in 91.413to encoder calibration, ... VFR only aircraft require 91.413 every 24 months.. ...
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  • Re: Pitot/Static/Transponder Problem
    ... Kyle Boatright wrote: ... the encoder is the problem. ... And if it's suddenly off by 200 feet, then it probably has more of an issue than a calibration would permanently fix. ...
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  • Re: transponder questions
    ... I don't think a malfunctioning encoder can stop the transponder from sending replies. ... The transponder transmits at 1090 MHz, which is well below the band of most police radars, but you might find a radar detector that is bad enough that its front end will respond to a 1090 MHz signal. ... The inspector ...
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