01161nam 2200349Ia 450 991069791070332120090127171206.0(CKB)5470000002393890(OCoLC)299813847(EXLCZ)99547000000239389020090127d1996 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierOperation of hot air balloons with airborne heaters[electronic resource]Washington, D.C. :U.S. Department of Transportation, Federal Aviation Administration,[1996]14 pages digital, PDF fileAdvisory circular ;AC no. 91-71Title from PDF caption (viewed Jan. 27, 2009)."6/13/96."Hot air balloonsSafety measuresBallooningSafety measuresHot air balloonsSafety measures.BallooningSafety measures.GPOGPOBOOK9910697910703321Operation of hot air balloons with airborne heaters3095082UNINA