205 Assault Support Helicopter Company GERONIMOS started in 1967 at Fort Sill Oklahoma. In 1988 205th AVN rebranded to B/6-158th AVN. 205th Formed at Fort Sill Jan 1967. Phu Loi 1967/1971. Lawson AAF/Fort Benning 1971/1973. Mainz Finthen 1973/1988 1981-1985, in fly by also movement to Scotland. Sgt. Barnes p.o.l @ (optional) Send Locations YearsLocationICAO/FAA1973/88 Mainz FinthenEDFZ 1970/73Lawson AAF / Fort BenningKLSF 1967/70 Phu Loi Models Years Models 1988 414 - H-47D Chinook 1973/88 205 1967/88 CH-47 Chinook 205 AvCo List of helicopters C/N VersionBuiltIn this Org In other Org b-649 ch-47c 70-15007 : noted at Middle Wallop International Air Day. b-674 ch-47c 70-15028 : US Army in 1987 205 AvCo. ; cnvt.to CH-47D 90-00200.