"I've been involved with aviation all my life. I love little airplanes. I've never had interest in the airlines or the military-this is where my heart lies." -Tom Young ANALYTICAL DISASSEMBLY A&P MECHANIC TOM YOUNG drills through rivets to remove them The airframe was described as having a severe left-wing-heavy condition. "I went as he prepares to take the right out and flew it. It was indeed a very left-wing-heavy condition-to the point where wing skins off a Socata TB-21 after about 10 minutes of flying the airplane, my arms were getting tired," Young Trinidad (below). The wing had been repaired improperly after an said. Experience told him it was more than a rigging issue. "The problem was accident. Young drills out rivets even worse when the flaps were down." along the Trinidad's spar (right). Consulting the Socata service manual, which provides dimensional and angular checks, Young fabricated a rigging board, put a digital inclinometer on it, and started checking the angle of incidence of each wing. "I found that lo and behold, the right wing had a full degree more incidence at the tip than the left wing." The Trinidad was damaged in a 2004 accident. Young surmised that repairs were made without checking the angle of incidence as new wing skins were riveted into place. (The shop that repaired the accident damage is no longer in business.) The wing would have to be deskinned and reconstructed. The airplane was moved into the back corner of the hangar, and Young began the disassembly process. 68 | AOPA PILOT December 2015