- Date
- August 2, 2010, 06:30 local (11:30 UTC)
- Place
- Wild Rose, WI
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Takeoff
- Aircraft
- N775PAPiper PA-12
- Defining event
- Takeoff: Loss of control on ground
- Weather
- Visual (VMC) · Day
- Status
- Completed · report April 7, 2011
- Report
- Approved by Office Director
- NTSB office
- Central Region
- Parties
- Federal Aviation Administration - Milwaukee FSDO
- FAA report
- 20100802039579A
- Case key
- 76813
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
The pilot's loss of directional control during the takeoff roll.
Findings · 4
NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.
Sequence of events
The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.
Analysis
The pilot stated that tailwheel-equipped airplane was accelerating on the takeoff roll when the tail became airborne before rotation speed, which was immediately followed by a left yaw/swerve. He attempted to regain directional control with right rudder and brake inputs, but the airplane continued in the left swerve. He elected to abort the takeoff by reducing engine power to idle while continuing to apply right rudder and brake inputs. He used aggressive braking as the airplane approached the left edge of the runway, but the airplane continued off the runway and struck several trees. He noted that the turf-runway was dew covered and that the wind was at approximately 3 knots, with no gusts. The leading edge of both wings, vertical stabilizer, and rudder were substantially damaged during the accident. A postaccident inspection of the airplane did not reveal any mechanical malfunction of the tailwheel or braking systems.
Factual narrative
The accident occurred while the tail-wheel equipped airplane was accelerating on the takeoff roll. The pilot reported that the airplane's tail became airborne before rotation speed, and was immediately followed by a left yaw/swerve. He attempted to regain directional control with right rudder and brake inputs, but the airplane continued in the left swerve. He elected to abort the takeoff by reducing engine power to idle while continuing to apply right rudder and brake inputs. The pilot stated that he used "aggressive" braking as the airplane approached the left edge of the runway, but the airplane departed the runway and struck several trees. He noted that the turf-runway was dew covered and that the winds were approximately 3 knots from the southwest, with no gusts. The leading edges of both wings, vertical stabilizer, and rudder were substantially damaged during the accident. A post-accident inspection of the airplane did not reveal any mechanical malfunction of the tailwheel or braking systems.
Aircraft
- Registration
- N775PA
- Reported as
- Piper PA-12
- Category
- Airplane
- Serial number
- 12-2804
- Airframe hours
- 2,020
- Engine
- Lycoming O-320-B2B, 160 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Ferry · Part 91
- Operator
- UND Aerospace Foundation
- Registered owner
- UND Aerospace Foundation
- Airworthiness certificate
- Standard, Normal
- Last inspection
- 100 hour · July 23, 2010
- Departed
- W23 · Wild Rose, WI
- Destination
- KRPD · Rice Lake, WI
- Flight plan
- Company VFR
- Airport
- W23 · Wild Rose Idlewild Airport, runway 27, 2,990 × 100 ft, grass/turf
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 50
- Injuries
- None
- Certificates
- Commercial, Airline transport
- Airplane ratings
- Multi-engine land, Single-engine sea, Single-engine land
- Instrument ratings
- Airplane, Helicopter
- Medical
- Class 2, With waivers/limitations
- Seat
- Front
- Flight hours
- 6,350 total · 7 in this make and model · 6,324 as pilot in command · 66 in the last 90 days · 32 in the last 30 days · 1 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 180° at 3 knots
- Visibility
- 6 statute miles
- Lowest ceiling
- None
- Temperature
- 66 °F, dew point 66 °F
- Altimeter
- 29.95 inHg
- Observed at
- KY50, 10 nm away
Docket · 2
The files NTSB released with the investigation on January 10, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 968 KB in all.
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.