Narrative:

Air carrier B737 was cleared for departure on runway 33. The wind was 060 degrees at 5 KTS. Virtually after the beginning of the takeoff role of the B737, I was cleared into position and hold. Following that I was cleared for takeoff. On the takeoff roll the instruments indicated full power and increasing airspeed. I rotated at 70 KTS at a point well before the liftoff point of the B737. I raised the gear, noted simultaneous turbulence and an uncommanded extreme roll to the left. This was corrected with full right aileron to neutral. At this point a loss of lift became apparent despite full power. A combination of continued turbulence and loss of lift prompted me to actuate the gear down control. This was immediately followed by impact. In retrospect, if the tower had delayed takeoff clearance or if I had insisted on a longer separation time, this incident, likely caused by wake turbulence, could have been avoided. Callback conversation with reporter revealed the following information: reporter stated that an FSDO supervisor has on going investigation into the incident. He has interviewed the pilot, and had a copy of the ATC tapes. It showed 20-23 seconds between the departing B737 and the BE36 departure. It shows no far violations. The aircraft was extensively damaged when it struck the runway, with the gear not down and locked.

Google
 

Original NASA ASRS Text

Title: BE36 PLT ENCOUNTERED WAKE TURB FROM A DEPARTING B737. THE BE36 MADE CONTACT WITH THE RWY, WITH THE LNDG GEAR IN TRANSIT.

Narrative: ACR B737 WAS CLRED FOR DEP ON RWY 33. THE WIND WAS 060 DEGS AT 5 KTS. VIRTUALLY AFTER THE BEGINNING OF THE TKOF ROLE OF THE B737, I WAS CLRED INTO POS AND HOLD. FOLLOWING THAT I WAS CLRED FOR TKOF. ON THE TKOF ROLL THE INSTS INDICATED FULL PWR AND INCREASING AIRSPD. I ROTATED AT 70 KTS AT A POINT WELL BEFORE THE LIFTOFF POINT OF THE B737. I RAISED THE GEAR, NOTED SIMULTANEOUS TURB AND AN UNCOMMANDED EXTREME ROLL TO THE L. THIS WAS CORRECTED WITH FULL R AILERON TO NEUTRAL. AT THIS POINT A LOSS OF LIFT BECAME APPARENT DESPITE FULL PWR. A COMBINATION OF CONTINUED TURB AND LOSS OF LIFT PROMPTED ME TO ACTUATE THE GEAR DOWN CTL. THIS WAS IMMEDIATELY FOLLOWED BY IMPACT. IN RETROSPECT, IF THE TWR HAD DELAYED TKOF CLRNC OR IF I HAD INSISTED ON A LONGER SEPARATION TIME, THIS INCIDENT, LIKELY CAUSED BY WAKE TURB, COULD HAVE BEEN AVOIDED. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATED THAT AN FSDO SUPVR HAS ON GOING INVESTIGATION INTO THE INCIDENT. HE HAS INTERVIEWED THE PLT, AND HAD A COPY OF THE ATC TAPES. IT SHOWED 20-23 SECONDS BTWN THE DEPARTING B737 AND THE BE36 DEP. IT SHOWS NO FAR VIOLATIONS. THE ACFT WAS EXTENSIVELY DAMAGED WHEN IT STRUCK THE RWY, WITH THE GEAR NOT DOWN AND LOCKED.

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.