Joe Baugher also lists a July 1989 date for being withdrawn from service.
http://www.joebaugher.com/usaf_serials/1966.html
66-8699/8786 McDonnell F-4D-32-MC Phantom
8699 (c/n 2451) to AMARC as FP0608 Feb 8, 1991.
8700 (c/n 2455) to AMARC as FP0226 Mar 14, 1989.
8701 to Korea in 1987/88
8704 w/o Jan 10, 1968, Vietnam
8705 (c/n 2467) to AMARC as FP0276 July 11, 1989.
8706 w/o Jan 16, 1968, Vietnam
8709 (c/n 2478) to AMARC as FP0164 Oct 6, 1988
8710 (c/n 2481) to AMARC as FP0222 Mar 3, 1989
but I believe that "to AMARC" means that it was transfered to AMARC
(Aircraft Maintenance And Regeneration Center - read "scrapyard"),
and most probably either destroyed or cannablized.
Andy
Andy