Operational and airworthiness approval of airborne Omega radio navigation systems as a means of updating self-contained navigation systems.
Series: AC ; 120-31A
Publisher: Dept. of Transportation, Federal Aviation Administration
Published: 1977
Place of publication: Washington
Language: eng
Subjects: Airplanes -- Radio equipment.; Omnirange system.; Navigation (Aeronautics)
Notes: "4/21/77."