Narrative:

Dfw airport taxi instructions, standard taxi to runway 35L intersection a. While holding short at taxiway a, a B757 landed on runway 35L. I was then given instructions to taxi into position runway 35L and be ready for immediate takeoff. B757 exited the highspd at taxiway el. I was then given immediate takeoff. Just after rotation and between 25 ft and 50 ft, I encountered the turbulence, almost losing control of the aircraft. The B757 was holding at txwys left and el. When given taxi clearance, he obviously came up with enough power for takeoff. I did not report the incident to dfw for immediate reasons of traffic at the time. Had the aircraft been on takeoff roll at that point, I feel certain control would have been lost. Another concern at dfw while being vectored and landing behind heavy aircraft with electronic GS OTS (which is quite frequent), no additional distance is given, just the ordinary 'caution wake turbulence.' commuters are often brought in lower than arriving jet aircraft, making wake turbulence a very high risk. Some controllers seem sensitive while a lot are not and somewhat complacent. Good common sense seems to be lacking by some controllers while working smaller aircraft in and around heavy aircraft.

Google
 

Original NASA ASRS Text

Title: AN ACR COMMUTER ACFT ON TKOF GOT WAKE TURB FROM AN LGT TAXIING.

Narrative: DFW ARPT TAXI INSTRUCTIONS, STANDARD TAXI TO RWY 35L INTXN A. WHILE HOLDING SHORT AT TXWY A, A B757 LANDED ON RWY 35L. I WAS THEN GIVEN INSTRUCTIONS TO TAXI INTO POS RWY 35L AND BE READY FOR IMMEDIATE TKOF. B757 EXITED THE HIGHSPD AT TXWY EL. I WAS THEN GIVEN IMMEDIATE TKOF. JUST AFTER ROTATION AND BTWN 25 FT AND 50 FT, I ENCOUNTERED THE TURB, ALMOST LOSING CTL OF THE ACFT. THE B757 WAS HOLDING AT TXWYS L AND EL. WHEN GIVEN TAXI CLRNC, HE OBVIOUSLY CAME UP WITH ENOUGH PWR FOR TKOF. I DID NOT RPT THE INCIDENT TO DFW FOR IMMEDIATE REASONS OF TFC AT THE TIME. HAD THE ACFT BEEN ON TKOF ROLL AT THAT POINT, I FEEL CERTAIN CTL WOULD HAVE BEEN LOST. ANOTHER CONCERN AT DFW WHILE BEING VECTORED AND LNDG BEHIND HVY ACFT WITH ELECTRONIC GS OTS (WHICH IS QUITE FREQUENT), NO ADDITIONAL DISTANCE IS GIVEN, JUST THE ORDINARY 'CAUTION WAKE TURB.' COMMUTERS ARE OFTEN BROUGHT IN LOWER THAN ARRIVING JET ACFT, MAKING WAKE TURB A VERY HIGH RISK. SOME CTLRS SEEM SENSITIVE WHILE A LOT ARE NOT AND SOMEWHAT COMPLACENT. GOOD COMMON SENSE SEEMS TO BE LACKING BY SOME CTLRS WHILE WORKING SMALLER ACFT IN AND AROUND HVY ACFT.

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.