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A BL17-1731 aircraft had uncommanded throttle spool-up striking the hangar door. Pilot notes full brake application would not stop aircraft.
| Attributes | |
| ACN | 737998 |
| Time | |
| Date | 200705 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : elp.airport |
| State Reference | TX |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : pub.tower |
| Operator | general aviation : personal |
| Make Model Name | Turbo-Viking |
| Operating Under FAR Part | Part 91 |
| Flight Phase | ground : taxi |
| Flight Plan | None |
| Person 1 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Qualification | pilot : instrument pilot : private |
| Experience | flight time last 90 days : 17 flight time total : 1410 |
| ASRS Report | 737998 |
| Events | |
| Anomaly | aircraft equipment problem : critical ground encounters other other anomaly |
| Independent Detector | other other : 1 |
| Resolutory Action | other |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
I had landed and taxied to my hangar. The airplane was stopped with engine running; tail pointing to my hangar door - nose pointing to another hangar. As I was preparing to shut down; the engine started to speed up. Retarding throttle had no effect; and full force on brakes couldn't stop plane. It went the few ft toward other hangar and the propeller hit the hangar door. This plane was just out of annual. This was apparently a mechanical or brake failing or a combination and it happened so quickly and without warning that I have no idea what preventive stops I could have taken. My mechanic has not yet determined any cause.
Original NASA ASRS Text
Title: A BL17-1731 ACFT HAD UNCOMMANDED THROTTLE SPOOL-UP STRIKING THE HANGAR DOOR. PILOT NOTES FULL BRAKE APPLICATION WOULD NOT STOP ACFT.
Narrative: I HAD LANDED AND TAXIED TO MY HANGAR. THE AIRPLANE WAS STOPPED WITH ENG RUNNING; TAIL POINTING TO MY HANGAR DOOR - NOSE POINTING TO ANOTHER HANGAR. AS I WAS PREPARING TO SHUT DOWN; THE ENG STARTED TO SPEED UP. RETARDING THROTTLE HAD NO EFFECT; AND FULL FORCE ON BRAKES COULDN'T STOP PLANE. IT WENT THE FEW FT TOWARD OTHER HANGAR AND THE PROP HIT THE HANGAR DOOR. THIS PLANE WAS JUST OUT OF ANNUAL. THIS WAS APPARENTLY A MECHANICAL OR BRAKE FAILING OR A COMBINATION AND IT HAPPENED SO QUICKLY AND WITHOUT WARNING THAT I HAVE NO IDEA WHAT PREVENTIVE STOPS I COULD HAVE TAKEN. MY MECH HAS NOT YET DETERMINED ANY CAUSE.
Data retrieved from NASA's ASRS site as of January 2009 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.