Posted for John Hafen <j.hafen@comcast.net>:

 Gents:
 
 Hopefully someone on the list knows way more about my AOA than I do.  Thanks
 in advance for your assistance.
 
 Running through the AOA PRO II Calibration Check List, in the Cruise
 Configuration Calibration, the checklist says:
 
 Zero G Maneuver for 1/2 second:         YES
 
 The next line says:
 
 PTT Red Record Button                    PUSH/RELEASE
 
 My question:  Am I to assume that you push the Red PTT button during the 1/2
 second of Zero G Flight?  After?  When?
 
 You also have to do some button pushing at 1.15 of Clean stall, and
 1.15 of dirty/landing configuration stall.
 
 Having not repeatedly stalled my IVP while looking closely at the airspeed
 indicator, I admit I can¹t say exactly what the clean and dirty stall speeds
 are, although the numbers I have been able to glean are that an IVP should
 have a clean and dirty stall speed of 80 and 75 KIAS respectively.
 
 So to calibrate the AOA, I would be pushing the buttons at 92 and 87 KIAS
 for clean and dirty.
 
 Is there any reason to calibrate at higher speeds than 92 and 87?  Would you
 get an earlier warning of an impending stall?
 
 Your advice and comments are very welcome.
 
 Regards,
 
 John Hafen
 IVP 413AJ ‹ 200 hours


[The AOA records the data at the release of the PTT button, so you can press it when you start the maneuver and release it at the instant you are satisfied that you are performing the required maneuver.   <marv>   ]