Ilovef-4,
When I was stationed at Nellis AFB the F-15’s there had their Turkey Feathers (Circa 1982-1985) about mid-1983 there was a TCTO the had dropped that called for the Feathers to be dropped, the reason I know this is that my roommate was a Jet Mach for the 57th TFWW and he was complaining about the last couple of engines they had just finished had to have this proceedure done ASAP so it was 12 hour shifts for them for a few weeks to get it done for the F-15 fleet there at Nellis