CEN22LA103

NTSB accident investigation · Cessna 120 · Sturtevant, WI · January 18, 2022

Accident · Serious injuriesClass 3 · LimitedFinal report
Date
January 18, 2022, 11:00 local (17:00 UTC)
Place
Sturtevant, WI · C89
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N90129Cessna 120
Defining event
Takeoff: Runway excursion
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 3
NTSB office
Central Region
Parties
Textron Aviation, FAA Milwaukee FSDO
FAA report
20220118000749A
Case key
104536

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 for reasons that could not be determined based on the available evidence, which resulted in a runway excursion.

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.

Not determinedNot determined › Not determined · Unknown/Not determinedCessna 120: 7 casesAll aircraft: 2,247 casesProbable cause
Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedCessna 120: 11 casesAll aircraft: 3,958 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotCessna 120: 22 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

A review airport security camera footage showed the airplane was attempting to depart to the east. About a quarter way down the length of the runway after the beginning of the takeoff roll, the airplane departed the runway to the left (north). Airport security video footage showed the airplane travel over a flat grass field with the engine running. The footage did not show the airplane become airborne at any time, and the tailwheel appeared to remain on the ground during the runway excursion. The airplane came to rest after it impacted the cabin of an unoccupied, parked fuel truck. The pilot reported he recalled taxiing for takeoff and applying engine power for the takeoff; however, he was unable to recall any additional events. Postaccident examination of the airframe revealed no mechanical anomalies. The postaccident emergency care did not identify any medical conditions the pilot had that might have contributed to the accident. The pilot’s pre-accident use of atorvastatin, famotidine, and fexofenadine, all non-impairing medications identified by toxicology testing of the pilot’s samples, also did not contribute to the circumstances of this accident. It is likely a loss of control occurred during the takeoff, which resulted in a runway excursion and a collision with an object. Based on the available evidence, the reason for the loss of control could not be determined.

Factual narrative

On January 18, 2022, about 1100 central standard time, a Cessna 120 airplane, N90129, was substantially damaged when it was involved in an accident near Sturtevant, Wisconsin. The private pilot sustained serious injuries. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight. Security camera footage was obtained from the Sylvania Airport (C89), Sturtevant, Wisconsin. A review of the footage showed the airplane was attempting to depart to the east, using runway 08R. The takeoff roll was initiated and about a quarter way down the length of the runway, the airplane departed the runway to the left (north). The footage showed the airplane travel over a flat grass field with the engine running. The footage did not show the airplane become airborne at any time, and the tailwheel appeared to remain on the ground during the runway excursion. The airplane came to rest after it impacted the cabin of an unoccupied, parked fuel truck. The pilot reported he recalled taxiing for takeoff and applying engine power for the takeoff, however he was unable to recall any additional events. The airplane sustained substantial damage to the left wing, the left-wing lift struts, and the fuselage. Postaccident examination of the airframe revealed no mechanical anomalies. Flight control continuity and airframe to engine control continuity was established. The main landing gear brake lines sustained impact damage, which precluded a system brake test. The main wheels were found free to rotate, and the brake pads and rotors for both wheels showed minimal wear. No signs of foreign object debris jamming or restricting operation of the cockpit controls was noticed. The pilot had reported no medical conditions and no use of medications to the FAA. Ketamine, fentanyl, propofol, and lidocaine were administered in the prehospital and immediate stages of his hospital care. No note is made in the hospital documentation of any identification of underlying natural disease such as a stroke or heart attack that may have been affecting the pilot prior to the collision of his airplane with the fuel truck. Toxicology testing was performed by the FAA’s Forensic Sciences Laboratory on blood and urine left over from specimens obtained during the pilot’s initial hospital admission. The results included medications administered during his post-crash care including ketamine and its metabolite norketamine, fentanyl and its metabolite norfentanyl, lidocaine, and propofol. In addition, atorvastatin, famotidine, and fexofenadine were identified, which are non-impairing medications.

Aircraft

Registration
N90129
Reported as
Cessna 120 (NO SERIES EXISTS)
Category
Airplane
Serial number
9190
Built
1946
Airframe hours
4,733
Engine
Continental Motors C-85-12F, 85 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 17, 2021
Destination
57C · East Troy, WI
Airport
C89 · Sylvania, runway 08R, 2,272 × 38 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
79
Injuries
Serious
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Seat
Left
Restraint
Lap only
Toxicology
Performed
Flight hours
2,483 total

Weather

Conditions
Visual (VMC) · Day
Wind
160° at 10 knots
Visibility
10 statute miles
Temperature
34 °F, dew point 19 °F
Altimeter
29.86 inHg
Observed at
KENW, 7 nm away
METAR
KENW 181653Z 16010KT 10SM FEW090 01/M07 A2986 RMK AO2 SLP122 T00111072

Docket · 7

The files NTSB released with the investigation on June 8, 2023, on NTSB’s docket system: statements, records, photos and specialists’ reports. 183 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.