Narrative:

On jun/fri/93 at approximately XA00 local, I started to depart maf on a scheduled cargo charter on 16R at taxiway microphone. Just as I reached rotation speed, and had committed to takeoff, a shimmy that seemed like a nosewheel shimmy began. During gear retraction, this continued as a buffet. As I scanned the aircraft to locate the source of the vibrations, I noticed the left oil inspection door open. When I requested clearance to return and land, I believe I mistakenly said that the fuel cap was open instead. I asked for no priority and received none, following an small transport on approach. Upon touchdown, the aircraft immediately pulled left, and the shimmy immediately resumed. The aircraft came to rest with approximately 4700 ft of runway remaining, 1000 ft from the nearest exit. After examining the tire, I decided it unwise to move the aircraft without assistance, since the tire was no longer seated on the rim properly. The mechanic who replaced the tire noted no unusual wear on the tire, which had been replaced recently, and that the only damage was from the rim rolling on the tire. He also noted that a piece of tube was pinched between the rim halves and theorized that this was a possible cause of the flat tire. The conclusion that I reached as I looked at the sequence of events are that the 'shimmy' noted near rotation speed was the tire going flat. The 'buffet' was the now mis-shapen unbalanced tire spinning down as it retracted and that the tire, unknown to me, was flat prior to touchdown.

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Original NASA ASRS Text

Title: AN ATX SMT BLEW A TIRE ON TKOF.

Narrative: ON JUN/FRI/93 AT APPROX XA00 LCL, I STARTED TO DEPART MAF ON A SCHEDULED CARGO CHARTER ON 16R AT TXWY MIKE. JUST AS I REACHED ROTATION SPD, AND HAD COMMITTED TO TKOF, A SHIMMY THAT SEEMED LIKE A NOSEWHEEL SHIMMY BEGAN. DURING GEAR RETRACTION, THIS CONTINUED AS A BUFFET. AS I SCANNED THE ACFT TO LOCATE THE SOURCE OF THE VIBRATIONS, I NOTICED THE L OIL INSPECTION DOOR OPEN. WHEN I REQUESTED CLRNC TO RETURN AND LAND, I BELIEVE I MISTAKENLY SAID THAT THE FUEL CAP WAS OPEN INSTEAD. I ASKED FOR NO PRIORITY AND RECEIVED NONE, FOLLOWING AN SMT ON APCH. UPON TOUCHDOWN, THE ACFT IMMEDIATELY PULLED L, AND THE SHIMMY IMMEDIATELY RESUMED. THE ACFT CAME TO REST WITH APPROX 4700 FT OF RWY REMAINING, 1000 FT FROM THE NEAREST EXIT. AFTER EXAMINING THE TIRE, I DECIDED IT UNWISE TO MOVE THE ACFT WITHOUT ASSISTANCE, SINCE THE TIRE WAS NO LONGER SEATED ON THE RIM PROPERLY. THE MECH WHO REPLACED THE TIRE NOTED NO UNUSUAL WEAR ON THE TIRE, WHICH HAD BEEN REPLACED RECENTLY, AND THAT THE ONLY DAMAGE WAS FROM THE RIM ROLLING ON THE TIRE. HE ALSO NOTED THAT A PIECE OF TUBE WAS PINCHED BTWN THE RIM HALVES AND THEORIZED THAT THIS WAS A POSSIBLE CAUSE OF THE FLAT TIRE. THE CONCLUSION THAT I REACHED AS I LOOKED AT THE SEQUENCE OF EVENTS ARE THAT THE 'SHIMMY' NOTED NEAR ROTATION SPD WAS THE TIRE GOING FLAT. THE 'BUFFET' WAS THE NOW MIS-SHAPEN UNBALANCED TIRE SPINNING DOWN AS IT RETRACTED AND THAT THE TIRE, UNKNOWN TO ME, WAS FLAT PRIOR TO TOUCHDOWN.

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.