Narrative:

I was giving flight instruction on traffic pattern work and normal landing operations. My student was setting up for the landing and I as a flight instructor was talking him through on the setups. He did the entire pre-landing checklist and setup while I double-checked his work. The student was on his approach speed and altitudes for all parts of the traffic pattern (upwind, crosswind, downwind, base, and final). On final he was at 60 KTS recommended approach speed for this specific aircraft and also stabilized for the approach. At touchdown, he was on the controls and I was prepared to take over if needed. He landed the aircraft and, as we touched down, I felt the brakes lock up. I asked, 'are you on the brakes,' he answered, 'I am not on the brakes.' I too was not on the brakes at this time. As the aircraft start pulling towards the left, he and I started to apply right rudder to keep it on centerline and within a couple hundred feet the plane came to a stop just left off the runway centerline. Tower notified that he observed some smoke coming from our landing gear when we touched down. I noticed that we were also tilted to the left. I advised my student to shutdown the aircraft while I made radio calls to the local FBO to see if they can tow us off the runway. Once we had the aircraft shutdown and secured, he and I stepped out of the aircraft to check on the aircraft. We found out we had a blown left tire. By this time the FBO line guys were out there preparing to get us towed off the runway. The aircraft was towed back to the ramp and no one was injured.

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Original NASA ASRS Text

Title: THE L BRAKE OF A DA20 LOCKED ON LNDG.

Narrative: I WAS GIVING FLT INSTRUCTION ON TFC PATTERN WORK AND NORMAL LNDG OPS. MY STUDENT WAS SETTING UP FOR THE LNDG AND I AS A FLT INSTRUCTOR WAS TALKING HIM THROUGH ON THE SETUPS. HE DID THE ENTIRE PRE-LNDG CHKLIST AND SETUP WHILE I DOUBLE-CHKED HIS WORK. THE STUDENT WAS ON HIS APCH SPD AND ALTS FOR ALL PARTS OF THE TFC PATTERN (UPWIND, XWIND, DOWNWIND, BASE, AND FINAL). ON FINAL HE WAS AT 60 KTS RECOMMENDED APCH SPD FOR THIS SPECIFIC ACFT AND ALSO STABILIZED FOR THE APCH. AT TOUCHDOWN, HE WAS ON THE CTLS AND I WAS PREPARED TO TAKE OVER IF NEEDED. HE LANDED THE ACFT AND, AS WE TOUCHED DOWN, I FELT THE BRAKES LOCK UP. I ASKED, 'ARE YOU ON THE BRAKES,' HE ANSWERED, 'I AM NOT ON THE BRAKES.' I TOO WAS NOT ON THE BRAKES AT THIS TIME. AS THE ACFT START PULLING TOWARDS THE L, HE AND I STARTED TO APPLY R RUDDER TO KEEP IT ON CTRLINE AND WITHIN A COUPLE HUNDRED FEET THE PLANE CAME TO A STOP JUST L OFF THE RWY CTRLINE. TWR NOTIFIED THAT HE OBSERVED SOME SMOKE COMING FROM OUR LNDG GEAR WHEN WE TOUCHED DOWN. I NOTICED THAT WE WERE ALSO TILTED TO THE L. I ADVISED MY STUDENT TO SHUTDOWN THE ACFT WHILE I MADE RADIO CALLS TO THE LCL FBO TO SEE IF THEY CAN TOW US OFF THE RWY. ONCE WE HAD THE ACFT SHUTDOWN AND SECURED, HE AND I STEPPED OUT OF THE ACFT TO CHK ON THE ACFT. WE FOUND OUT WE HAD A BLOWN L TIRE. BY THIS TIME THE FBO LINE GUYS WERE OUT THERE PREPARING TO GET US TOWED OFF THE RWY. THE ACFT WAS TOWED BACK TO THE RAMP AND NO ONE WAS INJURED.

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.