CEN21LA337

NTSB accident investigation · Piper PA18 · Larimore, ND · July 24, 2021

Accident · Serious injuriesClass 3 · LimitedFinal report
Date
July 24, 2021, 07:15 local (12:15 UTC)
Place
Larimore, ND
Injuries
1 serious, 1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N83411Piper PA18
Defining event
Takeoff: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 3
NTSB office
Central Region
Parties
FAA Flight Standards
FAA report
20210724011719A
Case key
103558

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 control during the initial climb for reasons that could not be determined based on the available information.

Findings · 2

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: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedPiper PA-18-150: 98 casesAll aircraft: 3,958 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotPiper PA-18-150: 160 casesAll aircraft: 9,295 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 airplane began turning left immediately after takeoff and did not seem to be responding to his control inputs. His attempts to maintain control were not successful and the airplane climb rate was deteriorating with the engine at full power. He recalled attempting to “pull back” as the airplane impacted the trees. The airplane sustained damage to the fuselage and both wings. A postaccident examination confirmed flight control continuity with no evidence of a preimpact flight control anomaly.

Factual narrative

On July 24, 2021, about 0715 central daylight time, a Piper PA-18-150 airplane, N83411, was substantially damaged when it was involved in an accident near Larimore, North Dakota. The pilot was seriously injured; the passenger was not injured. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight. The pilot reported that the preflight inspection, run-up, and initial portion of the takeoff were normal; however, immediately after lifting off, the airplane began turning left and did not seem to be responding to his control inputs. He attempted to maintain control using opposite rudder and aileron, but the airplane continued to the left. The climb rate was deteriorating with the engine at full power, and he thought the airplane might aerodynamically stall. He recalled attempting to “pull back” as the airplane impacted the trees. The airplane impacted trees about 100 yards southwest of the arrival threshold of runway 30 oriented on a southeast heading and came to rest in a nose-down attitude within the tree line. The airframe sustained damage to the fuselage and both wings. A postaccident examination confirmed flight control continuity with no evidence of a preimpact flight control anomaly.

Aircraft

Registration
N83411
Reported as
Piper PA18 (150)
Category
Airplane
Serial number
18-7609122
Built
1976
Airframe hours
2,507
Engine
Lycoming O-320-B2B, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · July 7, 2020 · 11 hours before
Departed
2L1 · Larimore, ND
Destination
4V4 · Northwood, ND
Airport
2L1 · Larimore Municipal, runway 30, 2,914 × 50 ft, asphalt

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
57
Injuries
Serious
Certificate
Private
Airplane ratings
Single-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Class 3, With waivers/limitations
Last flight review
July 6, 2019
Seat
Front
Restraint
3-point
Flight hours
1,169 total · 41 in this make and model · 1,022 as pilot in command · 3 in the last 90 days · 3 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
260° at 5 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
57 °F, dew point 55 °F
Altimeter
29.87 inHg
Observed at
RDR, 10 nm away

Docket · 4

The files NTSB released with the investigation on December 29, 2022, on NTSB’s docket system: statements, records, photos and specialists’ reports. 19.0 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.