WPR23LA103

NTSB accident investigation · Piper PA-12 · Porterville, UT · February 4, 2023

Accident · Minor injuriesClass 4 · LimitedFinal report
Date
February 4, 2023, 15:05 local (22:05 UTC)
Place
Porterville, UT · Private airstrip near Porterville
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N3969BPiper PA-12
Defining event
Maneuvering-low-alt flying: Loss of visual reference
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Western Pacific Region
Parties
FAA
FAA report
20230204000419A
Case key
106691

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 failure to maintain clearance from snow covered terrain while maneuvering at low altitude.

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.

Performance/control parameters: altitudeAircraft › Aircraft oper/perf/capability · Not attained/maintainedPiper PA-12: 6 casesAll aircraft: 1,310 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, the intention of the flight was to sight see and look at some local airstrips to determine their conditions. He noticed fresh tracks in the snow at an airstrip he was familiar with and decided to do a low pass to inspect further. On the third low approach he misjudged the tailwheel airplane’s height above the snow and the main wheels contacted and dug in. The pilot attempted a go-around however the airplane nosed over and came to rest inverted. The airplane sustained substantial damage to the wing struts, vertical stabilizer, and rudder. The pilot reported there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Aircraft

Registration
N3969B
Reported as
Piper PA-12 (12-278)
Category
Airplane
Serial number
12-278
Built
1946
Airframe hours
4,743
Engine
Lycoming O-320A1B, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · March 22, 2022 · 72 hours before
Departed
OGD · Ogden, UT
Destination
OGD · Ogden, UT
Airport
15UT · Field of Dreams, runway 8, 1,438 × 100 ft, snow
Equipment
ADS-B, Electronic flight bag or handheld device

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
36
Injuries
Minor
Certificates
Flight instructor, Airline transport, Commercial
Airplane ratings
Single-engine sea, Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, Without waivers/limitations
Last flight review
March 12, 2022
Seat
Front
Restraint
4-point
Flight hours
7,434 total · 218 in this make and model · 7,243 as pilot in command · 37 in the last 90 days · 20 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
360° at 4 knots
Visibility
4 statute miles
Temperature
41 °F, dew point 27 °F
Altimeter
30.25 inHg
Observed at
KSLC, 17 nm away
METAR
METAR KSLC 041954Z 36004KT 4SM HZ FEW230 05/M03 A3025 RMK AO2 SLP250 T00501028=K

Docket · 2

The files NTSB released with the investigation on March 23, 2023, on NTSB’s docket system: statements, records, photos and specialists’ reports. 7.2 MB 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.