20010727020212I

(.19)On July 27, 2001, at 1453 central daylight time, a Boeing 727-2Q6, N782AT, operated by an airline transport pilot as American trans air (ata), amtran flight 7991, maneuvered abruptly left during takeoff roll on runway 9 (6,178 feet by 150 feet, dry concrete) at Wittman Regional Airport (osh), Oshkosh, Wisconsin, to avoid a smith Lancair 360, N163DS that was taxiing for takeoff west on runway 9. The Boeing 727-2Q6 subsequently aborted the takeoff and taxied to the terminal ramp. Visual meteorological conditions prevailed at the time of the incident. The Boeing 727-2Q6 was conducting a ferry flight on an instrument flight rules plan under the provisions of 14 CFR part 121, from osh to chicago midway airport, chicago, Illinois. The Lancair 360 was operating under the provisions of 14 CFR part 91 without a flight plan. The captain, first officer, and flight engineer on the Boeing 727-2Q6 reported no injuries. Information on the pilot of the Lancair or any passenger on board that airplane is unknown at this time. The Boeing 727-2Q6 flight was originating at the time of the incident. The captain on the Boeing 727-2Q6 said, "we just set takeoff rated thrust, max thrust. You need it to get out of here. At 80, 90, to 100 knots, I saw him (N163DS) down runway 9. I executed the abort. I maneuvered left. He was fully on the pavement going west. We exited on [taxiway] bravo, and taxied to the ramp." The captain said, "we didn't hit anything. I was sure we were going to. There was no damage to the aircraft." The captain said they were in contact with osh air traffic control tower the whole time. "We were cleared to back taxi down [runway] 9. We were cleared for takeoff. We were told to expedite. There was a T-34 flight on final, 3 miles out. I turned [the airplane] and rolled." A federal aviation administration inspector, parked in a van south of runway 9-27 to observe warbird departures, saw a blue and white Lancair taxiing quickly westbound on the south side of runway 9. The inspector said, "we then observed ata (a 727) rolling for takeoff. The 727 then appeared to swerve left slightly, but the Lancair just stayed on the edge of the runway rolled to the end, then departed on runway 9 after the ata aborted the takeoff and left the runway." The air traffic manager for the experimental aircraft association (eaa) airshow said they saw the Lancair 360 from the tower. "He went down [the runway], [off] into the grass, past amtran (Boeing 727-2Q6), [then] back on the runway." The air traffic manager said the Lancair 360 was parked near mid-field for runway 9-27 in the grass with his engine shutdown. "He talked to a guy at flight ops about how to get out." The air traffic manager said the eaa flight operations person told the Lancair pilot to taxi in the grass around the T-6'S that were taxiing out for the airshow, head west around the south end of the runway to the departure point. The air traffic manager said that they did not talk to the Lancair 360 pilot until after the incident occurred and he was at the end of runway 9. "He talked to I. M. (iterant mobile - a mobile control authority on the field). We cleared him for takeoff to get him out of here." The NTSB on scene investigation began at 1453. The Boeing 727-2Q6 was parked on the ramp south of the osh passenger terminal building. An examination of the airplane revealed no damage.