CEN25LA078

NTSB accident investigation · Zenith Stol CH750 · Byron, IL · January 15, 2025

Accident · No injuriesClass 4 · LimitedFinal report
Date
January 15, 2025, 10:30 local (16:30 UTC)
Place
Byron, IL
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N749WJZenith Stol CH750
Defining event
Enroute-cruise: Loss of engine power (total)
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Central Region
Parties
FAA
FAA report
20250115000759A
Case key
199556

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 inadvertently moved the ignition key to the off position and broke the key, which resulted in a loss of engine power and subsequent forced landing.

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.

AircraftAircraft › Aircraft systems · Unintentional use/operationWilliam R Mcwethy STOL CH750: 1 caseAll aircraft: 63 cases

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 while in cruise flight, he noticed that his heavy keychain was pulling the key out of the ignition switch. He reached down to push the key back in, but inadvertently moved the key to the off position due to the thick glove on his hand, which resulted in a loss of engine power. When he attempted to reinsert the key and restart the engine, the key broke inside the ignition switch. He was unable to use the broken key to restart the engine. During the forced landing, the airplane sustained substantial damage to the right wing. The pilot reported that there were no other mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Aircraft

Registration
N749WJ
Reported as
Zenith Stol CH750
Category
Airplane, amateur-built
Serial number
75-7751
Built
2012
Airframe hours
560
Engine
UL Power 350i, 118 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · December 2, 2024
Departed
C73 · Dixon, IL
Destination
1C8 · Rockford, IL
Flight plan
VFR
Equipment
Electronic primary flight display

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
69
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
BasicMed
Last flight review
November 11, 2023
Seat
Left
Restraint
3-point
Flight hours
654 total · 542 in this make and model · 654 as pilot in command · 18 in the last 90 days · 6 in the last 30 days · 0 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
210° at 11 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
16 °F, dew point 1 °F
Altimeter
30.42 inHg
Observed at
KRFD, 9 nm away
METAR
KRFD 151654Z 21011KT 10SM CLR M09/M17 A3042 RMK AO2 SLP317 T10891167

Docket · 2

The files NTSB released with the investigation on February 12, 2025, on NTSB’s docket system: statements, records, photos and specialists’ reports. 10.7 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.