WPR11CA007

NTSB accident investigation · Piper PA-12 · Valley, WA · October 9, 2010

Accident · No injuriesData collectionFinal report
Date
October 9, 2010, 12:30 local (19:30 UTC)
Place
Valley, WA
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N2971MPiper PA-12
Defining event
Landing-landing roll: Nose over/nose down
Weather
Visual (VMC) · Day
Status
Completed · report March 16, 2011
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Spokane FSDO
FAA report
20101009047259A
Case key
77530

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The pilot's excessive brake application during the landing roll after overshooting the intended touchdown point, resulting in a nose over.

Findings · 3

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.

Action: incorrect action performancePersonnel issues › Action/decision · PilotPiper PA-12: 11 casesAll aircraft: 1,386 casesProbable cause
Wind: tailwindEnvironmental issues › Conditions/weather/phenomena · Effect on operationPiper PA-12: 4 casesAll aircraft: 594 cases
Landing gear system: landing gear brakes systemAircraft › Aircraft systems · Incorrect use/operationPiper PA-12: 3 casesAll aircraft: 92 casesProbable cause

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 reported that he elected to land in a recently mowed field at his parent's farm. He overflew some nearby ponds to verify wind conditions, which appeared to be calm. He then decided to land to the north since the field sloped uphill in that direction. During the landing sequence, the pilot stated that he touched down long and then applied the brakes with such force that the airplane nosed over onto its back, substantially damaging both the fuselage and the left wing. After exiting the airplane, the pilot noted that there was an intermittent wind blowing from the south. The pilot reported no mechanical failures or malfunctions with the airplane at the time of the accident.

Factual narrative

The pilot reported that he elected to land in a recently mowed 1,200 foot long field at his parent's farm. He stated that he overflew some nearby ponds to check for wind, of which there appeared to be none. He then decided to land to the north since the field sloped uphill in that direction. During the landing sequence, the pilot stated that he touched down long, and then applied the brakes with such force that the airplane nosed over onto its back, substantially damaging both the fuselage and the left wing. After exiting the airplane, the pilot noted that there was an intermittent wind blowing from the south. The pilot reported no mechanical failures or malfunctions with the airplane at the time of the accident.

Aircraft

Registration
N2971M
Reported as
Piper PA-12
Category
Airplane
Serial number
121363
Engine
Lycoming O-320 SERIES, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Positioning · Part 91
Operator
Thane Weythman
Registered owner
Kinkade Robert L
Airworthiness certificate
Standard, Normal
Departed
07S · Oroville, WA
Destination
Valley, WA

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
33
Injuries
None
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Class 2, Without waivers/limitations
Last flight review
September 1, 2010
Seat
Front
Flight hours
2,200 total · 100 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
150° at 5 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
61 °F, dew point 48 °F

Docket · 1

The files NTSB released with the investigation on November 5, 2010, on NTSB’s docket system: statements, records, photos and specialists’ reports. 330 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.