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Air ambulance takeoff on runway with 7-8 ft snowbanks. Has asymmetrical thrust causing aircraft to veer. Right wing contacts snowbank. Abort, aircraft spins.
| Attributes | |
| ACN | 233278 |
| Time | |
| Date | 199302 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : o05 |
| State Reference | CA |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : ugn |
| Operator | common carrier : air taxi |
| Make Model Name | Small Transport |
| Flight Phase | climbout : takeoff |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | company : air taxi |
| Function | flight crew : single pilot |
| Qualification | pilot : commercial pilot : instrument |
| Experience | flight time last 90 days : 60 flight time total : 4000 flight time type : 1200 |
| ASRS Report | 233278 |
| Events | |
| Anomaly | other anomaly other anomaly other other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : insufficient time |
| Consequence | other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | Pilot Deviation |
Narrative:
This incident happened on takeoff on a runway which was snowplowed with dry pavement and about 7-8 ft snowbanks. The width was NOTAM at 60 ft wide and was reported by airport manager to be 60-70 ft wide. On departure from runway 15, the plowed area was offset 5 ft from the right of centerline. On takeoff roll, after releasing the brakes and applying power, there was a power surge which pulled the aircraft to the left. Upon correcting with right rudder and differential power the plane went to the right and touched the right wing tip to the right side snowbank. At that time I aborted takeoff and tried to stop the aircraft. The aircraft was slowed to 30-40 mph when it spun to the right hitting the nose and stopping with the nose and the left wing tip in the snowbank. Damage to the aircraft was to the nose radome, skins behind nose radome and nose landing gear linkage. Callback conversation with reporter revealed the following information: reporter states his letter from the FAA indicates they believe he was departing on a runway which did not have sufficient width for his aircraft. The plane has wing span of approximately 44 ft. Reporter obviously felt he had enough width according to information given.
Original NASA ASRS Text
Title: AIR AMBULANCE TKOF ON RWY WITH 7-8 FT SNOWBANKS. HAS ASYMMETRICAL THRUST CAUSING ACFT TO VEER. R WING CONTACTS SNOWBANK. ABORT, ACFT SPINS.
Narrative: THIS INCIDENT HAPPENED ON TKOF ON A RWY WHICH WAS SNOWPLOWED WITH DRY PAVEMENT AND ABOUT 7-8 FT SNOWBANKS. THE WIDTH WAS NOTAM AT 60 FT WIDE AND WAS RPTED BY ARPT MGR TO BE 60-70 FT WIDE. ON DEP FROM RWY 15, THE PLOWED AREA WAS OFFSET 5 FT FROM THE R OF CTRLINE. ON TKOF ROLL, AFTER RELEASING THE BRAKES AND APPLYING PWR, THERE WAS A PWR SURGE WHICH PULLED THE ACFT TO THE L. UPON CORRECTING WITH R RUDDER AND DIFFERENTIAL PWR THE PLANE WENT TO THE R AND TOUCHED THE R WING TIP TO THE R SIDE SNOWBANK. AT THAT TIME I ABORTED TKOF AND TRIED TO STOP THE ACFT. THE ACFT WAS SLOWED TO 30-40 MPH WHEN IT SPUN TO THE R HITTING THE NOSE AND STOPPING WITH THE NOSE AND THE L WING TIP IN THE SNOWBANK. DAMAGE TO THE ACFT WAS TO THE NOSE RADOME, SKINS BEHIND NOSE RADOME AND NOSE LNDG GEAR LINKAGE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATES HIS LETTER FROM THE FAA INDICATES THEY BELIEVE HE WAS DEPARTING ON A RWY WHICH DID NOT HAVE SUFFICIENT WIDTH FOR HIS ACFT. THE PLANE HAS WING SPAN OF APPROX 44 FT. RPTR OBVIOUSLY FELT HE HAD ENOUGH WIDTH ACCORDING TO INFO GIVEN.
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.