CEN24LA330

NTSB accident investigation · Esqual VM1 · Oshkosh, WI · August 27, 2024

Accident · No injuriesClass 4 · LimitedFinal report
Date
August 27, 2024, 17:45 local (22:45 UTC)
Place
Oshkosh, WI
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N151GHEsqual VM1
Defining event
Takeoff: Loss of lift
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 FSDO GL13 Milwaukee
FAA report
20240827012619A
Case key
195020

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 premature rotation during takeoff which resulted in the airplane settling back to the runway and the subsequent separation of the left wheel.

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: wheel/ski/floatAircraft › Aircraft systems · Related operating infoHobbs Greg H ESQUAL VM-1: 1 caseAll aircraft: 48 casesProbable cause
Performance/control parameters: climb rateAircraft › Aircraft oper/perf/capability · Attain/maintain not possibleHobbs Greg H ESQUAL VM-1: 1 caseAll aircraft: 265 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 executed two stabilized low approaches without touching down. After touchdown following the third approach, engine power was added, and the wing flaps were retracted. Before the flaps were fully retracted and before rotation speed, the pilot rotated, and the airplane lifted off the runway. The airplane sank back onto the runway with a side load on the left main landing gear. The left axle broke, and the left wheel separated from the airplane and impacted the horizontal stabilizer. The pilot continued the takeoff, and the control tower confirmed there was no left wheel on the airplane. The second pilot landed the airplane on the runway without further incident. The airplane sustained substantial damage to the left side of the fuselage near the attachment point of the left horizontal stabilizer when the wheel impacted the airplane. The pilot reported that there were no mechanical anomalies with the airplane that would have precluded normal operations.

Aircraft

Registration
N151GH
Reported as
Esqual VM1
Category
Airplane, amateur-built
Serial number
51
Built
2005
Airframe hours
505.1
Engine
Rotax 912UL, 114 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Nathan Whiting
Airworthiness certificate
Special, Experimental light sport (Special)
Destination
Same as departure
Airport
OSH · Wittman Regional Airport, runway 27, 6,179 × 150 ft, concrete
Equipment
Electronic flight bag or handheld device, Auto-pilot, ADS-B, 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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
28
Injuries
None
Certificate
Sport Pilot
Medical
Sport pilot, Without waivers/limitations
Seat
Left
Restraint
4-point
Flight hours
120 total · 10 in this make and model · 1 in the last 24 hours
Role
Pilot-rated passenger
Age
25
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Without waivers/limitations
Seat
Right
Restraint
4-point
Flight hours
200 total · 10 in this make and model · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
290° at 6 knots
Lowest ceiling
None
Temperature
82 °F, dew point 72 °F
Altimeter
29.96 inHg
Observed at
KOSH
METAR
METAR 1646 SPECI 29006KT 10SM CLR 28/22 A2996

Docket · 3

The files NTSB released with the investigation on October 24, 2024, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.5 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.