- Date
- July 22, 2025, 14:32 local (19:32 UTC)
- Place
- Oshkosh, WI
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N71AWDyke Delta JD-2
- Defining event
- Landing-flare/touchdown: Loss of control in flight
- Weather
- Visual (VMC) · Day
- Status
- Completed · report October 2, 2025
- Report
- Approved by Office Director
- Investigation class
- Class 4 - Basic report with no Prelim publish
- NTSB office
- Central Region
- Parties
- FAA FSDO
- FAA report
- 20250722015809A
- Case key
- 200612
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 failure to maintain control of the airplane while landing with a tailwind.
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.
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 was flying in the Homebuilt Showcase during the EAA AirVenture air show. The pilot reported that while landing with a variable tailwind the airplane touched down about 2,500 ft down the runway, bounced, and landed hard. The pilot applied brakes, and the right main tire began to squeal. The airplane departed the landing surface to the left. The right main landing gear collapsed, the nose landing gear separated. The airplane sustained substantial damage to the engine mounts and the right wing. The pilot reported that there were no mechanical malfunctions or failures that would have precluded normal operations.
Aircraft
- Registration
- N71AW
- Reported as
- Dyke Delta JD-2
- Category
- Airplane, amateur-built
- Serial number
- 1123
- Built
- 2010
- Airframe hours
- 589.7
- Engine
- Lycoming O-360-41A6, 180 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Air race/show · Part 91
- Airworthiness certificate
- Special, Experimental (Special)
- Last inspection
- Condition · October 8, 2024
- Airport
- KOSH · Wittman, runway 36R, 8,000 × 75 ft, asphalt
- Equipment
- ADS-B
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
- 76
- Injuries
- None
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Medical
- BasicMed, Without waivers/limitations
- Last flight review
- June 6, 2025
- Seat
- Front
- Restraint
- 4-point
- Flight hours
- 1,789 total · 593 in this make and model · 1,721 as pilot in command · 12 in the last 90 days · 6 in the last 30 days · 0.2 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 150° at 10 knots
- Visibility
- 10 statute miles
- Temperature
- 28 °F, dew point 21 °F
- Altimeter
- 30.05 inHg
- Observed at
- KOSH
- METAR
- KOSH 221853Z 15010KT 10SM SCT029 28/21 A3005
Docket · 3
The files NTSB released with the investigation on October 2, 2025, on NTSB’s docket system: statements, records, photos and specialists’ reports. 4.9 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.