brns2, sorry but you did ask
Is there any formula to get TAS from a IAS with varying temp or press?
Just didn't want you to say I left something out.
I'm one of those nerds that wants the answer to the Nth decimal place.
411A, have yet to fly something with a TAS readout, has always been the whiz wheel.
The only Lockheed (12A) was so rudimentary it had a morse key in the RHS seat, quite unlike your chariot.