Narrative:

Upon landing on runway 27 at iah the nose gear steering torsion link pinfell out at approximately 90 KTS. We experienced nose gear shimmy with an extreme vibration, shimmy until deceleration to lower speeds. Although the aircraft was some what uncontrollable, the captain did an outstanding job stopping the aircraft. Using brakes, ground spoilers, and reverse thrust. The flight crew picked up the aircraft in iah. I (second officer) performed exterior walkaround. This was a pushback gate. So the steering scissors were disconnected. Pushback was accomplished, and pin was reinserted, and an uneventful takeoff and landing were made to aca. Preflight was accomplished again at aca by myself (second officer) an uneventful taxi out and takeoff were made, from aca to iah. The pin was found after landing in iah on the runway.

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Original NASA ASRS Text

Title: NOSE GEAR STEERING TORSION LINK PIN FELL OFF ACFT ON LNDG ROLLOUT AT IAH. NOSE WHEEL SHIMMY MADE BRINGING THE ACFT TO A STOP ON THE RWY DIFFICULT BUT SUCCESSFUL.

Narrative: UPON LNDG ON RWY 27 AT IAH THE NOSE GEAR STEERING TORSION LINK PINFELL OUT AT APPROX 90 KTS. WE EXPERIENCED NOSE GEAR SHIMMY WITH AN EXTREME VIBRATION, SHIMMY UNTIL DECELERATION TO LOWER SPDS. ALTHOUGH THE ACFT WAS SOME WHAT UNCTLABLE, THE CAPT DID AN OUTSTANDING JOB STOPPING THE ACFT. USING BRAKES, GND SPOILERS, AND REVERSE THRUST. THE FLT CREW PICKED UP THE ACFT IN IAH. I (S/O) PERFORMED EXTERIOR WALKAROUND. THIS WAS A PUSHBACK GATE. SO THE STEERING SCISSORS WERE DISCONNECTED. PUSHBACK WAS ACCOMPLISHED, AND PIN WAS REINSERTED, AND AN UNEVENTFUL TKOF AND LNDG WERE MADE TO ACA. PREFLT WAS ACCOMPLISHED AGAIN AT ACA BY MYSELF (S/O) AN UNEVENTFUL TAXI OUT AND TKOF WERE MADE, FROM ACA TO IAH. THE PIN WAS FOUND AFTER LNDG IN IAH ON THE RWY.

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.