AdamFrisch wrote:
No, the altitude on the transponder is corrected on the radar with the actual local QNH. It sends out in 1013 Hpa. Don’t mess with that.
I guess I’m slow but you’re using 1013 hPa when above transition level as well. I don’t see a reason why would ATC want to see the actual altitude instead of flight level (however, I’m not a controller). And I doubt TCAS performs such correction.
Martin wrote:
I guess I’m slow but you’re using 1013 hPa when above transition level as well.
I wonder how how often Adam flies above 18,000 ft transition altitude? 99.9% of US GA operations (I’m guessing) are conducted below transition altitude, with an altimeter setting different than the Mode C encoder.
I have never flown above TA and likely never will.
Just to clarify, in case it is necessary, transition altitudes in Europe are generally 3000-6000 feet and depend on the terminal area and QNH.
In the US it is 18000 feet everywhere.
Silvaire wrote:
I wonder how how often Adam flies above 18,000 ft transition altitude?
Aviathor wrote:
Just to clarify, in case it is necessary, transition altitudes in Europe are generally 3000-6000 feet and depend on the terminal area and QNH.In the US it is 18000 feet everywhere.
I understood, but thanks for making that context clear.
Once Adam gets his plane back in the air, I suppose he may regularly fly above 18000 feet since it is a pressurized turboprop… Or did I miss something?
