SAE AS399
Direction Instrument, Magnetic (Stabilized Type).
This specification covers minimum requirements for gyroscopically stabilized (or integrated) magnetic direction indicators for use in aircraft.
History:| Standard | Published | Revision | Status |
|---|---|---|---|
| AS399B | 2012-08-22 | Latest | |
| AS399A | 1958-07-01 | Historical | |
| AS399 | 1947-08-01 | Historical |