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Q67188: ASD: Mach Speed on 747 Panel

Article: Q67188
Product(s): Microsoft Home Games
Version(s): 
Operating System(s): 
Keyword(s): 
Last Modified: 30-JUL-2001

SUMMARY
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The Climb-out Checklist on the 747 instrument panel indicates that cruising
speed is Mach .85; however, Flight Simulator does not calculate Mach. Flight
Simulator reports your speed in knots.

In real terms, Mach 1 is 741.8 knots at sea level at 32 degrees Fahrenheit. Mach
.85 under these conditions would be 630.5 knots. The speed that is needed to
break the sound barrier fluctuates depending on altitude and temperature.

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