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Guest Joshieca

Cruise speed and overspeed alarms

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477 is obviously ground speed or true airspeed. Your cruising "Indicated airspeed" will be much lower than that. I know in the 737-400 mach .82 is pretty much the limit, which at approx. FL330 would be about 290 knots.

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Thanks, I thought that it might be something like that, because the GPS's ground speed is always higher then the airspeed.

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