sigh007 发表于 2012-3-24 11:14:39

MIL-T-5421B


                   MIL-T-5421B, MILITARY SPECIFICATION:  TUBES, PITOT, ELECTRICALLY HEATED, AIRCRAFT (20 MAY 1969) ., This specification covers all types of two-wire electrically heated pitot tubes for use with airspeed indicators.         
         
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