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A comment on Report on Air France 447 crash deepens mystery. Parent comment

Re:Report on Air France 447 crash deepens mystery by rbanffy on Saturday May 28, 2011 @04:20PM (#2595135)
Can't you compensate for that? Most of the time planes fly normally - data could be gathered on how to relate the readings of engine management sensors to airspeed.

I don't mean using it as a primary source for airspeed data, but backups in case other sources show weird or no data. The data that comes from those sensors already enters the cockpit, so it would make sense to use it.

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Re:Report on Air France 447 crash deepens mystery by borism on Saturday May 28, 2011 @05:17PM (#2595238)
You might be able to, but I imagine the calculations will be very complex and readings will be highly unreliable in anything but ideal conditions and constant speed level flight.

But yes, I think the conclusion after AF447 investigation is completed will be that some kind of back-up speed indicator is needed beyond pitot tubes.

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