IAS - TAS correction

[jf1981]

Hi

I'm looking forward how to have TAS out of IAS. Based on manual informations or sharts, I have for example our ot 180 mph at 10,000 ft an estimated TAS of 210 mph.

This turns out to be quite underestimated. When I travel, I record times much less than expected for a given distance.

For example, I expected a little bit more than 10 minutes travelling time between Gatwick and Holam airfields at 180 IAS 10,000 ft. It took 8 minutes.

I can't see the true figure since the full screen mode does'nt show TAS either !

Any idea about this error ?

Regards