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Nose gear steering pin shook loose on an air carrier cht large transport either on takeoff roll or landing causing loss of steering and nosewheel shimmy.
| Attributes | |
| ACN | 187298 |
| Time | |
| Date | 199108 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : fpo airport : bwi |
| State Reference | MD |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | general aviation : instructional |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | climbout : takeoff ground : preflight landing other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : flight engineer pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 50 flight time total : 14000 flight time type : 2500 |
| ASRS Report | 187298 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : far non adherence : published procedure |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Airport |
| Air Traffic Incident | other |
Narrative:
During tractor pushback in baltimore headset operator mentioned he was new at job. He reinstalled nose gear torque links. Tractor operator did not check operation. Somewhere between takeoff and landing roll, pin fell out. Upon nosewheel touching down (aircraft weight 100000 pounds maximum landing weight, speed 150 KTS) I had no steering except some rudder action and differential braking. When nosewheel freely cocked from center line of aircraft the aircraft shook violently until all forward motion stopped. My most exciting landing in 25 yrs. No injuries, no damage. I later spoke with manager in bwi asking them to insure this job is done properly. 158 passenger were scared but remained seated and calm. The tractor operator mentioned to me that he had a premonition to check pin security but didn't. I told him to always follow your hunches! I try to.
Original NASA ASRS Text
Title: NOSE GEAR STEERING PIN SHOOK LOOSE ON AN ACR CHT LGT EITHER ON TKOF ROLL OR LNDG CAUSING LOSS OF STEERING AND NOSEWHEEL SHIMMY.
Narrative: DURING TRACTOR PUSHBACK IN BALTIMORE HEADSET OPERATOR MENTIONED HE WAS NEW AT JOB. HE REINSTALLED NOSE GEAR TORQUE LINKS. TRACTOR OPERATOR DID NOT CHK OP. SOMEWHERE BTWN TKOF AND LNDG ROLL, PIN FELL OUT. UPON NOSEWHEEL TOUCHING DOWN (ACFT WT 100000 POUNDS MAX LNDG WT, SPD 150 KTS) I HAD NO STEERING EXCEPT SOME RUDDER ACTION AND DIFFERENTIAL BRAKING. WHEN NOSEWHEEL FREELY COCKED FROM CENTER LINE OF ACFT THE ACFT SHOOK VIOLENTLY UNTIL ALL FORWARD MOTION STOPPED. MY MOST EXCITING LNDG IN 25 YRS. NO INJURIES, NO DAMAGE. I LATER SPOKE WITH MGR IN BWI ASKING THEM TO INSURE THIS JOB IS DONE PROPERLY. 158 PAX WERE SCARED BUT REMAINED SEATED AND CALM. THE TRACTOR OPERATOR MENTIONED TO ME THAT HE HAD A PREMONITION TO CHK PIN SECURITY BUT DIDN'T. I TOLD HIM TO ALWAYS FOLLOW YOUR HUNCHES! I TRY TO.
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.