Ca.1974: TOS USAF as A-37B and assigned to the 169th Tactical Air Support Squadron/182nd Tactical Air Support Group (ANG), Peoria, IL. Ca.1980: Redesignated OA-37B. 27 Apr '92: AMARC, Davis-Monthan AFB, AZ as AB0027. 6/92: TOS Chile Air Force with s/n J-638. Assigned to Aviation Group 12. 2009: WFU, stored with Chilean Air Force at BA El Bosque.