Narrative:

I departed dwh for a VFR flight to hou. After numerous vectors and clearance for landing I was then revectored from runway 12L so 2 landing airline medium large transport's could cross my approach path at a higher altitude for 12R. After be reclred to land on 12L I was on a heading of 150 degrees to the airport runway. The wind was from 180 degrees at 6-8 KTS. I was cautioned about wake turbulence from the tower and acknowledged. I was not able to turn final until crossing the boundary of the airport. The first medium large transport was 3/4 down 12R on its landing roll. I encountered his wake turbulence and lost temporary control of the aircraft in my flare. The aircraft stalled and hit hard on the left main. The aircraft became airborne again and hit hard a second time when the gear failed. The aircraft came to rest on the centerline of the runway facing 180 degrees. There were no injuries. I believe this incident could have been avoided if the tower would have allowed better spacing between arrs for the parallel runways. My initial approach speed of 120 KTS was not that much slower than the medium large transport. Because of the prevailing wind his wake turbulence was unavoidable at the current spacing provided by the tower I believe spacing for safety needs to be implemented when small GA aircraft and airline aircraft are using parallel runways. When prevailing winds blow wake turbulence toward the small GA aircraft's runways. Since this incident took place at night this point becomes more critical.

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Original NASA ASRS Text

Title: GA SMA ENCOUNTERED WAKE TURBULENCE DURING LNDG FLARE AND AFTER BOUNCED LNDG THE GEAR COLLAPSED.

Narrative: I DEPARTED DWH FOR A VFR FLT TO HOU. AFTER NUMEROUS VECTORS AND CLRNC FOR LNDG I WAS THEN REVECTORED FROM RWY 12L SO 2 LNDG AIRLINE MLG'S COULD CROSS MY APCH PATH AT A HIGHER ALT FOR 12R. AFTER BE RECLRED TO LAND ON 12L I WAS ON A HDG OF 150 DEGS TO THE ARPT RWY. THE WIND WAS FROM 180 DEGS AT 6-8 KTS. I WAS CAUTIONED ABOUT WAKE TURB FROM THE TWR AND ACKNOWLEDGED. I WAS NOT ABLE TO TURN FINAL UNTIL XING THE BOUNDARY OF THE ARPT. THE FIRST MLG WAS 3/4 DOWN 12R ON ITS LNDG ROLL. I ENCOUNTERED HIS WAKE TURB AND LOST TEMPORARY CTL OF THE ACFT IN MY FLARE. THE ACFT STALLED AND HIT HARD ON THE LEFT MAIN. THE ACFT BECAME AIRBORNE AGAIN AND HIT HARD A SECOND TIME WHEN THE GEAR FAILED. THE ACFT CAME TO REST ON THE CENTERLINE OF THE RWY FACING 180 DEGS. THERE WERE NO INJURIES. I BELIEVE THIS INCIDENT COULD HAVE BEEN AVOIDED IF THE TWR WOULD HAVE ALLOWED BETTER SPACING BTWN ARRS FOR THE PARALLEL RWYS. MY INITIAL APCH SPD OF 120 KTS WAS NOT THAT MUCH SLOWER THAN THE MLG. BECAUSE OF THE PREVAILING WIND HIS WAKE TURB WAS UNAVOIDABLE AT THE CURRENT SPACING PROVIDED BY THE TWR I BELIEVE SPACING FOR SAFETY NEEDS TO BE IMPLEMENTED WHEN SMALL GA ACFT AND AIRLINE ACFT ARE USING PARALLEL RWYS. WHEN PREVAILING WINDS BLOW WAKE TURB TOWARD THE SMALL GA ACFT'S RWYS. SINCE THIS INCIDENT TOOK PLACE AT NIGHT THIS POINT BECOMES MORE CRITICAL.

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.