Narrative:

While walking to the aircraft I looked at th windsock next to the fuel pumps and noted the winds were out of the north, so I said to myself, 'we're going to takeoff on 34.' while taxiing to the runway I looked at the tetrahedron to confirm the windsock and it also showed the winds out of the north so we then proceeded to taxi to runway 34. After the runup we back taxied on 34 for departure. While back-taxiing I noticed black clouds and virga south of the airport over slc--but north and west there were no clouds below the mountain range and the sun was shining through them. Student then advanced the throttle all the way and we began to roll. As we were rolling I looked at the engine INS and then looked like they should, and the end sounded like it should. After rolling down the runway about 1/3 I looked at the airspeed indicator which read 55 KTS and climbing. At this point I figured we should be ready for takeoff. Student was easing back on the yoke. I figured he was not applying enough back pressure, so I helped him by pulling back a little. We then lifted off and became airborne for about 1-2 seconds. We then settled back down on the runway--but while we were airborne I felt the plane would not fly because we had plenty of airspeed but no lift. After we settled on the runway, I immediatley pulled the power back all the way and told student 'I got it,' while bringing the power back with my left hand. I brought the elevator (yoke) full out with my right hand to shift all the weight to the main wheels for maximum braking. At the same time I applied full brakes by pushing my toes forward all the way on the rudder pedals. I stayed in this position pressed back against the seat until the time we came to a complete stop. At the point where I applied brakes and chopped power and thereafter for about 5 seconds I thought we would have plenty of room to stop. The aircraft did slow down, but not with the force it should have. It felt more like a normal stop in a car. Then if one was to slam on the brake at the last moment, even thought the brakes were full forward. The next thing we were stopped and the end was dead. I unlatched the door and everybody ran out. I then reached in and shut the fuel pump, mags, moister off, and tried to turn the fuel selector valve off--but it would not turn. We all then waited for people to start showing up. I feel like this accident was caused by a microburst.

Google
 

Original NASA ASRS Text

Title: INSTRUCTOR AND STUDENT RUN OFF RWY WHILE ABORTING TKOF.

Narrative: WHILE WALKING TO THE ACFT I LOOKED AT TH WINDSOCK NEXT TO THE FUEL PUMPS AND NOTED THE WINDS WERE OUT OF THE N, SO I SAID TO MYSELF, 'WE'RE GOING TO TKOF ON 34.' WHILE TAXIING TO THE RWY I LOOKED AT THE TETRAHEDRON TO CONFIRM THE WINDSOCK AND IT ALSO SHOWED THE WINDS OUT OF THE N SO WE THEN PROCEEDED TO TAXI TO RWY 34. AFTER THE RUNUP WE BACK TAXIED ON 34 FOR DEP. WHILE BACK-TAXIING I NOTICED BLACK CLOUDS AND VIRGA S OF THE ARPT OVER SLC--BUT N AND W THERE WERE NO CLOUDS BELOW THE MOUNTAIN RANGE AND THE SUN WAS SHINING THROUGH THEM. STUDENT THEN ADVANCED THE THROTTLE ALL THE WAY AND WE BEGAN TO ROLL. AS WE WERE ROLLING I LOOKED AT THE ENG INS AND THEN LOOKED LIKE THEY SHOULD, AND THE END SOUNDED LIKE IT SHOULD. AFTER ROLLING DOWN THE RWY ABOUT 1/3 I LOOKED AT THE AIRSPD INDICATOR WHICH READ 55 KTS AND CLBING. AT THIS POINT I FIGURED WE SHOULD BE READY FOR TKOF. STUDENT WAS EASING BACK ON THE YOKE. I FIGURED HE WAS NOT APPLYING ENOUGH BACK PRESSURE, SO I HELPED HIM BY PULLING BACK A LITTLE. WE THEN LIFTED OFF AND BECAME AIRBORNE FOR ABOUT 1-2 SECS. WE THEN SETTLED BACK DOWN ON THE RWY--BUT WHILE WE WERE AIRBORNE I FELT THE PLANE WOULD NOT FLY BECAUSE WE HAD PLENTY OF AIRSPD BUT NO LIFT. AFTER WE SETTLED ON THE RWY, I IMMEDIATLEY PULLED THE PWR BACK ALL THE WAY AND TOLD STUDENT 'I GOT IT,' WHILE BRINGING THE PWR BACK WITH MY LEFT HAND. I BROUGHT THE ELEVATOR (YOKE) FULL OUT WITH MY RIGHT HAND TO SHIFT ALL THE WT TO THE MAIN WHEELS FOR MAX BRAKING. AT THE SAME TIME I APPLIED FULL BRAKES BY PUSHING MY TOES FORWARD ALL THE WAY ON THE RUDDER PEDALS. I STAYED IN THIS POS PRESSED BACK AGAINST THE SEAT UNTIL THE TIME WE CAME TO A COMPLETE STOP. AT THE POINT WHERE I APPLIED BRAKES AND CHOPPED PWR AND THEREAFTER FOR ABOUT 5 SECS I THOUGHT WE WOULD HAVE PLENTY OF ROOM TO STOP. THE ACFT DID SLOW DOWN, BUT NOT WITH THE FORCE IT SHOULD HAVE. IT FELT MORE LIKE A NORMAL STOP IN A CAR. THEN IF ONE WAS TO SLAM ON THE BRAKE AT THE LAST MOMENT, EVEN THOUGHT THE BRAKES WERE FULL FORWARD. THE NEXT THING WE WERE STOPPED AND THE END WAS DEAD. I UNLATCHED THE DOOR AND EVERYBODY RAN OUT. I THEN REACHED IN AND SHUT THE FUEL PUMP, MAGS, MOISTER OFF, AND TRIED TO TURN THE FUEL SELECTOR VALVE OFF--BUT IT WOULD NOT TURN. WE ALL THEN WAITED FOR PEOPLE TO START SHOWING UP. I FEEL LIKE THIS ACCIDENT WAS CAUSED BY A MICROBURST.

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.