On 3.4.17 22:32, Martin Gregorie wrote:
> On Mon, 03 Apr 2017 19:47:12 +0300, Tauno Voipio wrote:
>>
> Yes, you're right, but it can get even worse, with older American
> aircraft often have airspeeds measured in miles per hour rather than
> knots.

There was an explanationto the statute miles in the ASI:
it made the speed numbers larger, a good sales point.

My old Beech B19 (OH-BAB) had one of the MPH/kt ASI's.
It made easily 100 MPH, but hardly 100 kt. I usually
planned for 85 kt in cruise.

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-TV

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