Originally Posted by
Mike Switzer
Be aware that the rivet holes in Cessna seat rails were not drilled to an exact pattern until sometime after 1975 (the newest "old" Cessna I have worked on). I replaced the seat rails on both a 73 182 & a 75 172, we had to drill out the rivets & slice the bottom of the old rail off & grind it flat to use as a pattern to drill holes that matched the holes in the floor. Predrilled rails & undrilled rails are both available from Cessna for this reason. Replacing a few of the rivets took 3 people & at least one of them needed to have small hands.