In an online forum, a professional pilot wondered whether he might be incorrectly controlling the aircraft when he performed a slip on final approach because the airspeed always increased, not decreased as he’d been taught. Slips in transport aircraft are sometimes restricted or even prohibited, making it hard for pilots to know how to handle them when they are required.
Bombardier Learjet 35A, Columbus, Ohio, Jan. 10, 2007–The NTSB determined the probable cause of the accident was the pilot’s failure to maintain aircraft control during an in-flight maneuver, which took the airplane beyond its design stress limits. A factor was the excessive airspeed encountered during recovery, which caused substantial damage to the airplane’s left wing and elevator assembly.
At about 3:30 a.m. on January 10, the pilots flying a cargo-carrying Learjet 35 from Jacksonville, Fla., to Columbus, Ohio, for Airnet Systems attempted an aileron roll, according to the NTSB, but the maneuver wasn’t entirely successful. “The crew reported they did an intentional roll,” said NTSB investigator-in-charge Todd Fox. “There was substantial damage. The elevators were bent, and there was some stabilizer damage.