EntityQ432484· pop 19· linked from 276 articlesLockheed AH-56 CheyenneSign in to save1967 attack helicopter series by LockheedConnectionshelicopterEntityHughes AH-64 ApacheEntityLockheed A-12EntityLockheed VenturaEntitySikorsky S-67 BlackhawkEntityT64EntityYouTubeConceptWikimedia CommonsEntityVietnam WarConceptInternational Standard Book NumberEntityWayback MachineEntityUnited States Air ForceEntityUnited States NavyEntityGeneral Dynamics F-16 Fighting FalconEntityLockheed Martin F-22 RaptorEntityUnited States ArmyEntityLockheed Martin F-35 Lightning IIConceptLockheed MartinEntityresonanceEntityLockheed C-130 HerculesEntityCategories1960s United States attack aircraft1960s United States helicoptersAircraft first flown in 1967Aircraft with retractable conventional landing gearAttack helicoptersCancelled military aircraft projects of the United StatesCompound helicoptersLockheed aircraftRigid rotor helicoptersSingle-rotor helicoptersSingle-turbine helicoptersUnited States military helicopters