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Two mechanics report losing steering and braking control during taxi of a saab sf-340B from the terminal to maintenance hangar. Aircraft struck taxi marking signs damaging left engine propeller and flap.
| Attributes | |
| ACN | 854193 |
| Time | |
| Date | 200906 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | SF 340B |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Taxi |
| Component | |
| Aircraft Component | Propeller Blade |
| Person 1 | |
| Function | Technician |
| Qualification | Maintenance Powerplant Maintenance Airframe |
| Person 2 | |
| Function | Technician |
| Qualification | Maintenance Airframe Maintenance Powerplant |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural Clearance Deviation - Procedural Maintenance Deviation - Procedural Published Material / Policy Ground Event / Encounter Loss Of Aircraft Control Ground Excursion Taxiway |
Narrative:
I was involved in a damage incident involving a saab sf-340 aircraft at ZZZ airport. After backing aircraft from the gate to take it to the maintenance hangar; I had difficulty keeping the parking brake set; having to reset it several times with the override pump. After starting the left engine; I turned left on quebec and after taxiing; I believe more than a plane length; I was losing steering and braking control and turning to the left; into the grass infield. I began to power down the engines; to the best of my memory; at the light poles. We ran over taxi marking signs on the left side of the aircraft and damaged the left engine propeller. We came to a stop in the grass 30 to 40 feet from the signs and engines were at a full stop. I believe the reason for the steering and breaking loss was because I did not set the aircraft generators after starting. I don't remember not doing that; but I believe that is the probable cause for this incident.
Original NASA ASRS Text
Title: Two Mechanics report losing steering and braking control during taxi of a Saab SF-340B from the terminal to maintenance hangar. Aircraft struck taxi marking signs damaging left engine propeller and flap.
Narrative: I was involved in a damage incident involving a SAAB SF-340 aircraft at ZZZ airport. After backing aircraft from the gate to take it to the maintenance hangar; I had difficulty keeping the parking brake set; having to reset it several times with the override pump. After starting the left engine; I turned left on Quebec and after taxiing; I believe more than a plane length; I was losing steering and braking control and turning to the left; into the grass infield. I began to power down the engines; to the best of my memory; at the light poles. We ran over taxi marking signs on the left side of the aircraft and damaged the left engine propeller. We came to a stop in the grass 30 to 40 feet from the signs and engines were at a full stop. I believe the reason for the steering and breaking loss was because I did not set the aircraft generators after starting. I don't remember not doing that; but I believe that is the probable cause for this incident.
Data retrieved from NASA's ASRS site as of April 2012 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.