"Is it permissible to use T88 and a 3/16 wood dowel to plug the mistake"
YES!!! Orma In my first reply I gave the short answer "YES" with no explanation. Since it's 5 in the morning and I'm not sleeping, I'll add the why. And, it's not because all the other answers were not sufficient, or that any of them were incorrect. Why stop beating a horse just because it's dead. Anyway, the instructions that came from RR with the fixed gear conversion kit that installed some years ago, had a one line instruction for closing the holes in the center section spar that were left by the original retract gear brackets. The line of instruction reads as follows: "2.1 Fill the old spar bolt holes with spruce plugs coated with epoxy". My retrofit was accomplished in 1991 and I still trust my wings. I also agree that perfect is best, but like Mark said, if you have the time. Orma L. Robbiins Southfield, MI AP/IA Not claiming to be an EXPERT Professional Aircraft Mechanic since September 1967 I will fly to the gathering this year. KR-2 N110LR aka Tweety, 21 years of flying this August http://www.kr-2.aviation-mechanics.com/
