MIL-DTL-5421D, DETAIL SPECIFICATION: TUBES, PITOT, ELECTRICALLY HEATED, AIRCRAFT (05 APR 2011) [SUPERSEDING MIL-T-5421B]

MIL-DTL-5421D, DETAIL SPECIFICATION: TUBES, PITOT, ELECTRICALLY HEATED, AIRCRAFT (05 APR 2011) [SUPERSEDING MIL-T-5421B]., This specification covers all types of two-wire electrically heated pitot tubes for use with airspeed indicators.