GAA19CA408

NTSB accident investigation · Piper PA 20 · Hamilton, MT · July 12, 2019

Accident · Minor injuriesData collectionFinal report
Date
July 12, 2019, 12:30 local (18:30 UTC)
Place
Hamilton, MT
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N7409KPiper PA 20
Defining event
Landing: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report December 2, 2019
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
FAA report
20190712011349A
Case key
99828

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 loss of directional control due to his unintentional use of brakes instead of the rudder during the landing roll, which resulted 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.

Landing gear system: brakeAircraft › Aircraft systems · Unintentional use/operationPiper PA-20: 1 caseAll aircraft: 297 casesProbable cause
Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedPiper PA-20: 20 casesAll aircraft: 3,958 casesProbable cause
Use of equip/info: use of equip/systemPersonnel issues › Task performance · PilotPiper PA-20: 2 casesAll aircraft: 1,391 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 of the tailwheel-equipped airplane reported that, upon landing and approaching the taxiway he intended to exit, he lifted his feet from the "rudderbars" to engage the brakes. The airplane abruptly entered a left turn, and he thought he used the right rudder, but he mistakenly used brake pedal. Immediately thereafter, the airplane nosed over. The airplane sustained substantial damage to the right wing lift strut and rudder. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The pilot reported that he believes the accident could have been avoided "if [he] had kept [his] feet on the rudderbars until [the airplane] had exited the runway."

Factual narrative

The pilot of the tailwheel-equipped airplane reported that, upon landing and approaching the taxiway he intended to exit, he lifted his feet from the "rudderbars" to engage the brakes. The airplane abruptly entered into a left turn and he "jabbed at the right rudder," but mistakenly utilized brake pedal. The airplane immediately nosed over. The airplane sustained substantial damage to the right wing lift strut and rudder. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The airport's automated weather observation station reported that, about the time of the accident, the wind was from 010° at 6 knots. The airplane was landing on runway 34. The pilot reported that he believes the accident could have been avoided "if [he] had kept [his] feet on the rudderbars until [he] had exited the runway."

Aircraft

Registration
N7409K
Reported as
Piper PA 20 (Undesignat)
Category
Airplane
Serial number
20-318
Built
1950
Airframe hours
3,433.89
Engine
Lycoming O-320-A2A, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · June 13, 2019
Departed
6S5 · Hamilton, MT
Destination
6S5 · Hamilton, MT
Airport
6S5 · Ravalli County, runway 34, 4,200 × 75 ft, asphalt
Equipment
Handheld GPS

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
74
Injuries
Minor
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Last flight review
May 5, 2019
Seat
Left
Restraint
3-point
Flight hours
726 total · 460 in this make and model · 595 as pilot in command · 4 in the last 90 days · 4 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
10° at 6 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
77 °F, dew point 55 °F
Altimeter
30.05 inHg
Observed at
K6S5, 40 nm away

Docket · 1

The files NTSB released with the investigation on September 9, 2019, on NTSB’s docket system: statements, records, photos and specialists’ reports. 234 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.

Other investigations on N7409K · 1

Matched to the same aircraft by N-number and date.