F-4s had a yaw string too. There is a small hole in the top skin in
front of the canopy that the string is threaded into, and tied off
inside the airframe. I seem to recall it looked like parachute riser
cord with a knot at the end - but don't hold me to that, I was just a
WSO. Any old F-4 crewchiefs out there know more about this?

Funny thing is, while just about every F-4 I got into had a white (or
black, depending on the camouflage) stripe at the location of the yaw
string, most of the jets (these were USAF F-4Es in the 70-80s) no
longer had the string installed. I think after they wore off or got
too short to be useful, no one bothered to replace them. And there was
no mention of the yaw string in the flight manual, oddly enough. Not
high tech enough for the Air Force, probably!

Kirk
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