20031130037609A

(-23) On 11/30/03 Cessna N9968F, owned and operated by aero-tech inc. a 141 school, was blown on it's left wing tip and nose by a regional jet (rj) N664BR operated by united express/atlantic coast airlines flight #7394. The regional jet N664BR operated by two atlantic coast airline mechanics was performing power runs. The mechanics contacted air traffic control (ATC) and told them they were at gate C5 and needed to do some power runs. ATC cleared the aircraft to run where they were. The rj N664BR said that there was another aircraft parked in front of them so they would not do the performance runs at that time. Later N664BR advised the tower ATC, that the aircraft parked in front of them had departed, and they were ready to do their power runs where they were if it was ok. ATC cleared N664BR to perform power runs. Looking at the picture taken by the Lexington airport police the regional jet was parked at gate C5 at approximately a 45-degree angle to the building with the tail of the aircraft pointing at the end of runway 22. This was also verified by statement from privacy data omitted an atlantic coast airline employee who observed the aircraft while it was performing the engine runs. Aircraft N9968F requested clearance to taxi to runway 22 from the fixed base operator (FBO). ATC cleared N9968F to runway 22. Listening to the tower tapes I did not hear ATC advise N9968F of the aircraft N664BR doing performance runs. As aircraft N9968F taxied behind N664BR the jet blast blew it on the left wing tip and nose of aircraft. The pilot Mr. Christian magura stated that the aircraft rotated and ended up facing the tail pipes of N664BR. Listening to the tower tapes it sounds like a woman's voice that talks to N664BR about performing engine runs. Later when N9968F calls for taxi clearance it sounds like a man's voice.