AS397B - Direction Instrument, Non-Magnetic, Stabilized Type (Directional Gyro)

Details Document Number: AS397B Revision Number: B Title Direction Instrument, Non-Magnetic, Stabilized Type (Directional Gyro) Scope To specify minimum requirements for non-magnetic gyroscopically stabilized direction indicators for use in 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 as follows: Type I - Air Operated, Type II - Electrically Operated.

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