01102nam 2200349Ia 450 991069775790332120081103134039.0(CKB)5470000002391393(OCoLC)268676428(EXLCZ)99547000000239139320081103d1994 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierPrimary category aircraft[electronic resource]Washington, D.C. :U.S. Dept. of Transportation, Federal Aviation Administration,[1994]13 pages digital, PDF fileAdvisory circular ;AC no. 21-37"6/14/94."Title from PDF file caption (viewed Nov. 3, 2008).AirplanesAirworthinessAirworthiness certificatesUnited StatesAirplanesAirworthiness.Airworthiness certificatesGPOGPOBOOK9910697757903321Primary category aircraft3193041UNINA