00850nam a22002772  4500001001300000003000500013005001700018008004100035040001800076074001400094086002100108099002100129245003900150260003100189300001200220500001900232500001700251500000900268500007600277500004400353506003300397650005200430710005300482949001800535999001900553hsl001005295DGPO20170826152539.0170105s1971    dcu     r    f000 0 eng d  aGPOcGPOdMvI  a0431-C-040 aTD 4.8/2:6000.15  aTD 4.8/2:6000.1500aMaintenance of airways facilities.  a[Washington, D.C.,c1971].  a[54] p.  aFeb. 11, 1971.  aCover title.  a4to.  a[Issued with perforations. Cancels AF P 6030.5, SM 6030.5, and 6031.3].  aCRDP Program Historic Shelflist record.  aOfficial use. Not available. 0aAeronauticsxSafety regulationszUnited States.1 aUnited States.bFederal Aviation Administration.  aBEVbFed Docs  c263953d263953