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Flight crew of medium large transport attempted to turn 180 degrees on taxiway. Steer wheels went off taxiway and over center. Aircraft had to be towed to gate for maintenance inspection. No damage. Aircraft released for flight.
| Attributes | |
| ACN | 108460 |
| Time | |
| Date | 198904 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : dtw |
| State Reference | MI |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | ground other : taxi |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 250 flight time total : 19000 flight time type : 3500 |
| ASRS Report | 108460 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 210 flight time total : 6200 flight time type : 182 |
| ASRS Report | 108459 |
| Events | |
| Anomaly | non adherence : clearance other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : unable other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Taxied out for takeoff to 21C dtw. I went by the turn-on for runway and had to make 180 turn back on taxiway. While making the turn the nose tires went into the grass by 2' and then back on the pavement. Nose steering went over center and would not straighten out. Aircraft was then towed back to terminal by maintenance. No damage. Aircraft was released from maintenance after inspection. The incident happened because I missed the turn onto the approach to runway 21C. I think if end could have been better marked to alert the turn to taxiway to 21C I might have avoided an incident, although I had been on this taxiway maybe 10 prior. Also I should have been a little slower in my turn to keep my turning radius down. Using my left rudder to make the tight turn helped the turn but also pushed the nose tires past center.
Original NASA ASRS Text
Title: FLT CREW OF MLG ATTEMPTED TO TURN 180 DEGREES ON TXWY. STEER WHEELS WENT OFF TXWY AND OVER CENTER. ACFT HAD TO BE TOWED TO GATE FOR MAINTENANCE INSPECTION. NO DAMAGE. ACFT RELEASED FOR FLT.
Narrative: TAXIED OUT FOR TKOF TO 21C DTW. I WENT BY THE TURN-ON FOR RWY AND HAD TO MAKE 180 TURN BACK ON TXWY. WHILE MAKING THE TURN THE NOSE TIRES WENT INTO THE GRASS BY 2' AND THEN BACK ON THE PAVEMENT. NOSE STEERING WENT OVER CENTER AND WOULD NOT STRAIGHTEN OUT. ACFT WAS THEN TOWED BACK TO TERMINAL BY MAINT. NO DAMAGE. ACFT WAS RELEASED FROM MAINT AFTER INSPECTION. THE INCIDENT HAPPENED BECAUSE I MISSED THE TURN ONTO THE APCH TO RWY 21C. I THINK IF END COULD HAVE BEEN BETTER MARKED TO ALERT THE TURN TO TXWY TO 21C I MIGHT HAVE AVOIDED AN INCIDENT, ALTHOUGH I HAD BEEN ON THIS TXWY MAYBE 10 PRIOR. ALSO I SHOULD HAVE BEEN A LITTLE SLOWER IN MY TURN TO KEEP MY TURNING RADIUS DOWN. USING MY LEFT RUDDER TO MAKE THE TIGHT TURN HELPED THE TURN BUT ALSO PUSHED THE NOSE TIRES PAST CENTER.
Data retrieved from NASA's ASRS site as of August 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.