24 Sep '80: First flight. 8 Oct '80: TOS USAF as A-10A. By 6/86: 47th Tactical Fighter Squadron/917th Tactical Fighter Wing (AFRES), Barksdale AFB, LA. By 5/90: 46th FS/917th TFW. By 2006: 47th FS/917th FW. 16 My '08: AMARC, Davis-Monthan AFB, AZ as AC0503 for conversion to A-10C. By 9/09: RTS with 47th FS, 917th Fighter Group. 6/13: 47th FS, 355th Fighter Wing, Davis-Monthan AFB, AZ. Ca. 9/18: 47th FS/924th FW, Davis-Monthan AFB, AZ.