Certification of transport category rotorcraft. - [Washington, D.C., 1985]. - v. Change 2. 5/28/85. CRDP Program Historic Shelflist record. Subjects--Topical Terms: Rotors (Helicopters)--Certification. GPO Item No.: 0431-A-27 Gov. Doc. Class. No.: TD 4.8/5:29-2/CH.2