|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||1201 To 1800|
|Locale Reference||airport : mco|
|Altitude||agl bound lower : 0|
agl bound upper : 0
|Operator||common carrier : air carrier|
|Make Model Name||B727-200|
|Operating Under FAR Part||Part 121|
|Flight Phase||climbout : takeoff|
|Affiliation||company : air carrier|
|Function||flight crew : captain|
oversight : pic
|Qualification||pilot : atp|
|Affiliation||company : air carrier|
|Function||flight crew : first officer|
|Qualification||pilot : commercial|
pilot : instrument
|Anomaly||aircraft equipment problem : less severe|
other anomaly other
|Independent Detector||other flight crewa|
|Resolutory Action||flight crew : overcame equipment problem|
|Air Traffic Incident||other|
During takeoff roll from mco, at 139 KTS vr, the nose wheel started a bad shimmy and continued until the wheels stopped in the well. The shimmy shook the entire airframe until the wheels stopped. The #1 flight attendant came up front to inquire of the vibration and said the first class cabin passenger looked concerned. We told her of our concerns. Upon landing in dfw -- gear extended normal -- and touch down was normal as well, we placed the item in the log. The original sign off was to even the air pressure in the nose tires. This was a difference of 1-2 pounds of pressure in the tires. 111-110 psi -- later WX moved in the area and prevented maintenance to come to the aircraft for a conference. After speaking to tul technician who agreed with me to change the nose tires to stop the shimmy this was passed on to maintenance 10-15 mins after landing. Maintenance did not want to change the tires and did not until after we went over 14 hours duty day. I spoke to 2 maintenance supervisors who agreed to change the tires to stop the shimmy and did so. After the tires came off, there was a large chunk of rubber missing off the left nose tire -- 2 inches wide 4-6 inches long. If maintenance changed the tires first instead of the quick sign off which did not work so quick in this case. We may have gotten off the gate and to iah instead of canceling the flight. Thanks to the supervisors who right away knew the fix was to change the tires I do not know what happened for the 2 hours before then.
Original NASA ASRS Text
Title: RPTR EXPERIENCED SEVERE SHIMMY ON TKOF AND FOUND MAINT UNWILLING TO TAKE APPROPRIATE CORRECTIVE ACTION.
Narrative: DURING TKOF ROLL FROM MCO, AT 139 KTS VR, THE NOSE WHEEL STARTED A BAD SHIMMY AND CONTINUED UNTIL THE WHEELS STOPPED IN THE WELL. THE SHIMMY SHOOK THE ENTIRE AIRFRAME UNTIL THE WHEELS STOPPED. THE #1 FLT ATTENDANT CAME UP FRONT TO INQUIRE OF THE VIBRATION AND SAID THE FIRST CLASS CABIN PAX LOOKED CONCERNED. WE TOLD HER OF OUR CONCERNS. UPON LNDG IN DFW -- GEAR EXTENDED NORMAL -- AND TOUCH DOWN WAS NORMAL AS WELL, WE PLACED THE ITEM IN THE LOG. THE ORIGINAL SIGN OFF WAS TO EVEN THE AIR PRESSURE IN THE NOSE TIRES. THIS WAS A DIFFERENCE OF 1-2 LBS OF PRESSURE IN THE TIRES. 111-110 PSI -- LATER WX MOVED IN THE AREA AND PREVENTED MAINT TO COME TO THE ACFT FOR A CONFERENCE. AFTER SPEAKING TO TUL TECHNICIAN WHO AGREED WITH ME TO CHANGE THE NOSE TIRES TO STOP THE SHIMMY THIS WAS PASSED ON TO MAINT 10-15 MINS AFTER LNDG. MAINT DID NOT WANT TO CHANGE THE TIRES AND DID NOT UNTIL AFTER WE WENT OVER 14 HRS DUTY DAY. I SPOKE TO 2 MAINT SUPVRS WHO AGREED TO CHANGE THE TIRES TO STOP THE SHIMMY AND DID SO. AFTER THE TIRES CAME OFF, THERE WAS A LARGE CHUNK OF RUBBER MISSING OFF THE L NOSE TIRE -- 2 INCHES WIDE 4-6 INCHES LONG. IF MAINT CHANGED THE TIRES FIRST INSTEAD OF THE QUICK SIGN OFF WHICH DID NOT WORK SO QUICK IN THIS CASE. WE MAY HAVE GOTTEN OFF THE GATE AND TO IAH INSTEAD OF CANCELING THE FLT. THANKS TO THE SUPVRS WHO RIGHT AWAY KNEW THE FIX WAS TO CHANGE THE TIRES I DO NOT KNOW WHAT HAPPENED FOR THE 2 HRS BEFORE THEN.
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.