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91-43 - Unreliable Airspeed Indications (Cancelled)

Cancellation Notes
Cancel by AFS-1 (Memo Attached)
Date Cancelled
June 17, 2013
Date Issued
June 26, 1975
Responsible Office

Alerts pilots to the possibility of erroneous airspeed/Mach indications that may be caused by blocking or freezing of the pilot system and advises of corrective action that can be taken.