Browse Standards AS393B
Current Reaffirmed 2008-02-16

Airspeed Tubes Electrically Heated(NONCURRENT Aug 2002) AS393B

The purpose of this Aeronautical Standard is to specify minimum requirements for pitot-static type of electrically heated Airspeed Tubes primarily for use in reciprocating engine powered civil transport aircraft, the operation of which may subject the instruments to the environmental conditions specified in paragraph 3.3. This aeronautical standard covers two basic types of instruments as follows: Type I - Pitot Pressure, straight and L-shaped, 12 and 14 volt nominal, 2 wire circuit. Type II - Pitot and Static Pressured, straight and L-shaped, 12 and 24 volt nominal, 2 wire circuit.
AS393B
2008-02-16
Latest
Reaffirmed
AS393A
1960-07-15
Historical
Revised
AS393
1947-12-01
Historical
Issued

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