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Sa-227AC captain reported losing directional control and departing the runway when the nose wheel steering failed in a full left turn configuration.
| Attributes | |
| ACN | 1372943 |
| Time | |
| Date | 201607 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | SA-227 AC Metro III |
| Operating Under FAR Part | Part 135 |
| Flight Phase | Landing |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Nosewheel Steering |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Ground Event / Encounter Loss Of Aircraft Control Ground Excursion Runway |
Narrative:
This event happened during landing rollout. When I brought the speed levers low; the plane was immediately thrown to the left. I tried controlling the aircraft by using full right rudder; pressing the nose wheel steering button on the power lever; pressing the park button of the nose wheel steering; and adjusting throttles. It seemed like only a second; and I was in the grass off the runway.there were no indications of anything wrong during my descent; approach; or before landing checklists. The green nose wheel steering light illuminated like it was supposed to when I turned it on in the descent checklist. It was still on after the incident occurred.after getting out of the plane I checked for damage and didn't see any. I saw the nose gear turned fully left; though. I believe the nose wheel steering system malfunctioned and forced the nose gear left.I was the only one on the plane; and I was not injured.
Original NASA ASRS Text
Title: SA-227AC Captain reported losing directional control and departing the runway when the nose wheel steering failed in a full left turn configuration.
Narrative: This event happened during landing rollout. When I brought the speed levers low; the plane was immediately thrown to the left. I tried controlling the aircraft by using full right rudder; pressing the Nose Wheel Steering button on the power lever; pressing the park button of the nose wheel steering; and adjusting throttles. It seemed like only a second; and I was in the grass off the runway.There were no indications of anything wrong during my descent; approach; or before landing checklists. The green nose wheel steering light illuminated like it was supposed to when I turned it on in the descent checklist. It was still on after the incident occurred.After getting out of the plane I checked for damage and didn't see any. I saw the nose gear turned fully left; though. I believe the nose wheel steering system malfunctioned and forced the nose gear left.I was the only one on the plane; and I was not injured.
Data retrieved from NASA's ASRS site 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.