wrote:
This brings up another question and complication regarding the
installation of transponders in sailplanes. The altimeter. I get a
different answer everytime I ask it, but the transponder inspection
may/may not include inspection of the altimeter. I had to install an
IFR altimeter (large size) to pass the original installation
inspection. I could not find a small size altimeter that met the
accuracy requirements. Subsequent inspectors didn't care so I went
back to my small altimeter.

The altimeter is required to meet specific accuracy standards for IFR
use, but not for VFR use. Your original inspector was wrong to require
it for your glider, unless you indicated you wanted to use it under IFR.

--
Eric Greenwell - Washington State, USA
* Change "netto" to "net" to email me directly

* Updated! "Transponders in Sailplanes" http://tinyurl.com/y739x4
* New Jan '08 - sections on Mode S, TPAS, ADS-B, Flarm, more

* "A Guide to Self-launching Sailplane Operation" at www.motorglider.org