Narrative:

Preflight and taxi were normal. Engine runup normal. A B737 departed the parallel runway (runway 32L). We were cleared to depart on runway 32R. The wind was from 240 degrees. I noted that the midfield windsock was fully extended, however, the windsock nearest me was limp. The initial takeoff roll was normal. At rotation speed, the nosewheel came off the ground, then there was an immediate veer to the left. My initial thought was that the left main tire had blown. The sensation was one of loss of lift, accompanied by what felt like a strong push on the left side of the tail. I immediately gave forceful right rudder. Since the nosewheel was not in contact with the ground, there was no steering effect. Also, I don't believe I had rudder effectiveness, as the nose did not come around to the right. By this time, it was obvious that we were departing the runway into the grass. Therefore, I leveled the wings, brought the power to idle, and settled into the infield grass (between runway 32L and runway 32R). Because of heavy rain the night before, the aircraft became mired in the mud, bending the inner gear doors. The ground operations crew pulled the airplane from the mud, and the plane was taxied back to its hangar under its own power. The aircraft sustained minor bending of the 2 inner main gear doors, and additional damage to the right outer gear door. Also, there was minor scraping of sheet metal beneath the right elevator, presumably from grass/brush contact. There was no airfoil, engine, propeller damage, there were no injuries. There were no other aircraft involved. I believe that at rotation there was a sudden wind change from wnw, to the ssw. This resulted in loss of lift and airspeed, as well as directional control. Also, there may have been wake turbulence from the prior jet departure that was blown across my runway. I believe the aircraft would not have sustained any damage if the ground were not saturated from the previous rain. I did note that the next arriving aircraft landed to the south, indicating a change in wind direction. I believe my action to level the wings, reduce power and 'fly the airplane' prevented a more serious incident from occurring. Perhaps waiting at the end of the runway longer or waiting until the winds decreased could have prevented the incident.

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Original NASA ASRS Text

Title: PVT INST RATED PLT LOST CTL OF THE ACFT DURING TKOF IN A XWIND RESULTING IN RUNNING OFF THE SIDE OF THE RWY INTO THE MUDDY GRASS MIDFIELD AREA BTWN PARALLEL RWYS.

Narrative: PREFLT AND TAXI WERE NORMAL. ENG RUNUP NORMAL. A B737 DEPARTED THE PARALLEL RWY (RWY 32L). WE WERE CLRED TO DEPART ON RWY 32R. THE WIND WAS FROM 240 DEGS. I NOTED THAT THE MIDFIELD WINDSOCK WAS FULLY EXTENDED, HOWEVER, THE WINDSOCK NEAREST ME WAS LIMP. THE INITIAL TKOF ROLL WAS NORMAL. AT ROTATION SPD, THE NOSEWHEEL CAME OFF THE GND, THEN THERE WAS AN IMMEDIATE VEER TO THE L. MY INITIAL THOUGHT WAS THAT THE L MAIN TIRE HAD BLOWN. THE SENSATION WAS ONE OF LOSS OF LIFT, ACCOMPANIED BY WHAT FELT LIKE A STRONG PUSH ON THE L SIDE OF THE TAIL. I IMMEDIATELY GAVE FORCEFUL R RUDDER. SINCE THE NOSEWHEEL WAS NOT IN CONTACT WITH THE GND, THERE WAS NO STEERING EFFECT. ALSO, I DON'T BELIEVE I HAD RUDDER EFFECTIVENESS, AS THE NOSE DID NOT COME AROUND TO THE R. BY THIS TIME, IT WAS OBVIOUS THAT WE WERE DEPARTING THE RWY INTO THE GRASS. THEREFORE, I LEVELED THE WINGS, BROUGHT THE PWR TO IDLE, AND SETTLED INTO THE INFIELD GRASS (BTWN RWY 32L AND RWY 32R). BECAUSE OF HVY RAIN THE NIGHT BEFORE, THE ACFT BECAME MIRED IN THE MUD, BENDING THE INNER GEAR DOORS. THE GND OPS CREW PULLED THE AIRPLANE FROM THE MUD, AND THE PLANE WAS TAXIED BACK TO ITS HANGAR UNDER ITS OWN PWR. THE ACFT SUSTAINED MINOR BENDING OF THE 2 INNER MAIN GEAR DOORS, AND ADDITIONAL DAMAGE TO THE R OUTER GEAR DOOR. ALSO, THERE WAS MINOR SCRAPING OF SHEET METAL BENEATH THE R ELEVATOR, PRESUMABLY FROM GRASS/BRUSH CONTACT. THERE WAS NO AIRFOIL, ENG, PROP DAMAGE, THERE WERE NO INJURIES. THERE WERE NO OTHER ACFT INVOLVED. I BELIEVE THAT AT ROTATION THERE WAS A SUDDEN WIND CHANGE FROM WNW, TO THE SSW. THIS RESULTED IN LOSS OF LIFT AND AIRSPD, AS WELL AS DIRECTIONAL CTL. ALSO, THERE MAY HAVE BEEN WAKE TURB FROM THE PRIOR JET DEP THAT WAS BLOWN ACROSS MY RWY. I BELIEVE THE ACFT WOULD NOT HAVE SUSTAINED ANY DAMAGE IF THE GND WERE NOT SATURATED FROM THE PREVIOUS RAIN. I DID NOTE THAT THE NEXT ARRIVING ACFT LANDED TO THE S, INDICATING A CHANGE IN WIND DIRECTION. I BELIEVE MY ACTION TO LEVEL THE WINGS, REDUCE PWR AND 'FLY THE AIRPLANE' PREVENTED A MORE SERIOUS INCIDENT FROM OCCURRING. PERHAPS WAITING AT THE END OF THE RWY LONGER OR WAITING UNTIL THE WINDS DECREASED COULD HAVE PREVENTED THE INCIDENT.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.