Old 02-21-2010, 08:12 PM
  #10  
UAL T38 Phlyer
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Joined APC: Mar 2008
Position: Curator at Static Display
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Default Good Math

Grade: A+

Here's an extreme example:

I used to do functional check flights on F-4 Phantoms. I've been at FL500, indicating 230 knots, and the Mach was 1.10.

Which would mean for your 1900, with a Mach-crit of 0.48, your limiting IAS would be about 110 kts (if you could get a 1900 to FL500)
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