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An SA227 metroliner on landing rollout made a sudden uncommanded left turn exiting the runway and incurring aircraft damage due to nose steering failure.
| Attributes | |
| ACN | 455319 |
| Time | |
| Date | 199911 |
| Day | Thu |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : lwc.airport |
| State Reference | KS |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : charter |
| Make Model Name | SA-227 AC Metro III |
| Operating Under FAR Part | Part 135 |
| Flight Phase | landing : roll |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : charter |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 100 flight time total : 24000 flight time type : 3500 |
| ASRS Report | 455319 |
| Person 2 | |
| Affiliation | company : charter |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : cfi pilot : multi engine pilot : commercial |
| Experience | flight time last 90 days : 120 flight time total : 1730 flight time type : 420 |
| ASRS Report | 455336 |
| Events | |
| Anomaly | aircraft equipment problem : critical excursion : runway other anomaly |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | none taken : unable |
| Consequence | other other |
| Factors | |
| Maintenance | performance deficiency : fault isolation |
| Supplementary | |
| Problem Areas | Aircraft Company |
| Primary Problem | Aircraft |
Narrative:
During rollout aircraft started a left turn (uncommanded). Exited the runway and down an embankment then back up the other side where propellers struck the ground, stopping both engines. Callback conversation with reporter revealed the following information: the reporter stated this aircraft did not have nose gear steering when manufactured and the nose gear steering on this aircraft was an after market installation. The reporter said two separate aircraft in the fleet have experienced nose steering problems with this steering mechanism and this incident made 3 failures. The reporter stated this incident caused propeller damage from striking the ground. The reporter stated the steering was disconnected and the aircraft maintenance ferried the aircraft to the fixed base operator who installed the nose gear steering. On arrival the aircraft would only turn left. The reporter said this aircraft had a previous history of steering problems.
Original NASA ASRS Text
Title: AN SA227 METROLINER ON LNDG ROLLOUT MADE A SUDDEN UNCOMMANDED L TURN EXITING THE RWY AND INCURRING ACFT DAMAGE DUE TO NOSE STEERING FAILURE.
Narrative: DURING ROLLOUT ACFT STARTED A L TURN (UNCOMMANDED). EXITED THE RWY AND DOWN AN EMBANKMENT THEN BACK UP THE OTHER SIDE WHERE PROPS STRUCK THE GND, STOPPING BOTH ENGS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THIS ACFT DID NOT HAVE NOSE GEAR STEERING WHEN MANUFACTURED AND THE NOSE GEAR STEERING ON THIS ACFT WAS AN AFTER MARKET INSTALLATION. THE RPTR SAID TWO SEPARATE ACFT IN THE FLEET HAVE EXPERIENCED NOSE STEERING PROBS WITH THIS STEERING MECHANISM AND THIS INCIDENT MADE 3 FAILURES. THE RPTR STATED THIS INCIDENT CAUSED PROP DAMAGE FROM STRIKING THE GND. THE RPTR STATED THE STEERING WAS DISCONNECTED AND THE ACFT MAINT FERRIED THE ACFT TO THE FIXED BASE OPERATOR WHO INSTALLED THE NOSE GEAR STEERING. ON ARR THE ACFT WOULD ONLY TURN L. THE RPTR SAID THIS ACFT HAD A PREVIOUS HISTORY OF STEERING PROBS.
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.