Narrative:

G4 was outside the OM and just inside the initial approach fix on the ILS to runway 30 houston hobby airport. Tower cleared a B737 for takeoff on runway, opposite direction takeoff. The B737 was instructed to make an immediate left turn after takeoff, which was completed before we arrived at short final. However, on short final, we experienced turbulence from wingtip vortices from the B737 which rocked our G4 first to the left then to the right, inside 1/4 mi from runway. The landing was made without incident. The tower was not notified of the matter at that time. Conversation with reporter revealed the following information: reporter advised flight crew had the departing B737 in sight since the OM, though surprised that tower cleared the B737 for takeoff as they were at that position. Reporter advised no wake turbulence advisory was issued. On short final, they were on VASI glide path, below 1000 ft when encountering the B737's wake. Recovering from the double swing, side to side, the reporter advised there was sufficient altitude to make the correction and land, though exiting well down the runway from the 'usual' exit point. Wings rolled 10-12 degrees in each direction before leveling was obtained. Reporter advised that in the future if conducting a similar situation, he will take action as though a B737 were a B757, planning to remain above the GS and land long to avoid the wake turbulence as much as practicable.

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Original NASA ASRS Text

Title: ON FINAL APCH, APPROX ONE QUARTER MI TO HOU RWY 30L, GLF4 ENCOUNTERS WAKE TURB FROM A B737 THAT HAD JUST DEPARTED RWY 12R AND ESTABLISHED IN A L TURN AWAY FROM THE LNDG GLF4.

Narrative: G4 WAS OUTSIDE THE OM AND JUST INSIDE THE INITIAL APCH FIX ON THE ILS TO RWY 30 HOUSTON HOBBY ARPT. TWR CLRED A B737 FOR TKOF ON RWY, OPPOSITE DIRECTION TKOF. THE B737 WAS INSTRUCTED TO MAKE AN IMMEDIATE L TURN AFTER TKOF, WHICH WAS COMPLETED BEFORE WE ARRIVED AT SHORT FINAL. HOWEVER, ON SHORT FINAL, WE EXPERIENCED TURB FROM WINGTIP VORTICES FROM THE B737 WHICH ROCKED OUR G4 FIRST TO THE L THEN TO THE R, INSIDE 1/4 MI FROM RWY. THE LNDG WAS MADE WITHOUT INCIDENT. THE TWR WAS NOT NOTIFIED OF THE MATTER AT THAT TIME. CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR ADVISED FLT CREW HAD THE DEPARTING B737 IN SIGHT SINCE THE OM, THOUGH SURPRISED THAT TWR CLRED THE B737 FOR TKOF AS THEY WERE AT THAT POS. RPTR ADVISED NO WAKE TURB ADVISORY WAS ISSUED. ON SHORT FINAL, THEY WERE ON VASI GLIDE PATH, BELOW 1000 FT WHEN ENCOUNTERING THE B737'S WAKE. RECOVERING FROM THE DOUBLE SWING, SIDE TO SIDE, THE RPTR ADVISED THERE WAS SUFFICIENT ALT TO MAKE THE CORRECTION AND LAND, THOUGH EXITING WELL DOWN THE RWY FROM THE 'USUAL' EXIT POINT. WINGS ROLLED 10-12 DEGS IN EACH DIRECTION BEFORE LEVELING WAS OBTAINED. RPTR ADVISED THAT IN THE FUTURE IF CONDUCTING A SIMILAR SIT, HE WILL TAKE ACTION AS THOUGH A B737 WERE A B757, PLANNING TO REMAIN ABOVE THE GS AND LAND LONG TO AVOID THE WAKE TURB AS MUCH AS PRACTICABLE.

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.