CHI99FA266 · Chance Vought F4U-4
Chance Vought F4U-4 and Grumman F8F-1 and 1 more aircraft · Accident: collision between aircraft (not in flight) during takeoff
Event
- NTSB case
- CHI99FA266
- Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
- Accident
- InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
- Completed
- API-reported fatalities
- 0 · all aircraft and ground
- Ground fatalities
- 0
- OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
- General aviation
- WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
- Visual Meteorological Cond
Aircraft 1 · Chance Vought F4U-4
- Aircraft type
- Chance Vought F4
- Category
- Airplane
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- N712RD
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Wittman Regional Airport (OSH)To not recorded
- Aircraft age
- Not recorded
- Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
- Part 91: General Aviation
- Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
- Takeoff · roll/run
- First occurrenceThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
- Collision between aircraft (not in flight)
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Destroyed
Aircraft 2 · Grumman F8F-1
- Aircraft type
- Grumman F8
- Category
- Airplane
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- N14HP
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Wittman Regional Airport (OSH)To not recorded
- Aircraft age
- Not recorded
- Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
- Part 91: General Aviation
- Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
- Standing · engine(s) operating
- First occurrenceThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
- Collision between aircraft (not in flight)
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Substantial
Aircraft 3 · Chance Vought F4U-5
- Aircraft type
- Chance Vought F4
- Category
- Airplane
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- N179PT
- Operator
- James M. Read · private individual
- Onboard fatalities
- Unknown
- Route
- From Wittman Regional Airport (OSH)To not recorded
- Aircraft age
- Not recorded
- Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
- Part 91: General Aviation
- Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
- Takeoff · rejected takeoff
- First occurrenceThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
- Dragged wing, rotor, pod, float or tail/skid
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Substantial
Cause areas
- Pilot in command › Clearance, not maintained
- Pilot in command › Instructions, written/verbal, not followed
- Pilot in command › Maneuver to avoid obstructions, performed
- Pilot of other aircraft › Clearance, not maintained
- Pilot of other aircraft › Instructions, written/verbal, not followed
Approximate · Estimated position: the centre of Oshkosh, WI, the place the record names. Not the accident site.
NTSB narrative
The three airplanes were part of a formation demonstration flight of eight World War II Navy fighters, divided into four sections of two airplanes each, that had been cleared to takeoff from runway 18 at Wittman Regional Airport, Oshkosh, Wisconsin, during the annual Experimental Aircraft Association (EAA) convention, 'AirVenture 99'. Air traffic control clearance for the departing aircraft had been relinquished from the FAA tower to a local 'air boss'. The air boss had cleared all of the airplanes to takeoff as a flight. Witnesses saw the lead airplane, a Bearcat, N14HP, and his wingman, taxi down runway 18 approximately 1,400 feet, turn toward the southwest and stop. Approximately 4 seconds later, the lead airplane in the second section, a Corsair, N712RD, collided into N14HP severing the Corsair's left wing, and the Bearcat's right wing. The Corsair continued down the runway, rolling over on it's left side, came apart, and burst into flames. The remains of the Corsair came to rest in a field east of the runway, approximately 2,000 feet down. The Bearcat was turned approximately 180 degrees and came to rest on the runway's east edge. A second Corsair, the wingman of N712RD, veered off of the west side of runway 18, sustaining substantial damage to it's left wing. Examination of all three airplanes revealed no anomalies.
Probable cause
The pilot not following the instructions briefed by the formation leader, and the pilot not maintaining clearance from the formation lead airplane. A factor relating to this accident was the area of restricted visibility in front of the pilot when the airplane sits on its tailwheel.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record CHI99FA266
- Event ID
- 20001212X19172
- Case number
- CHI99FA266
- Dataset
- historical-pre2008
- Source SHA-256
- 89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
Source notes (4)
- Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
- Filled from the NTSB case API where the bulk record had no value: investigation status. Values present in the bulk record are kept.
- The date is the local date, which is the same as the UTC date the NTSB stores.
- API snapshot SHA-256: 7ccb2c3b625deb0a89eb961b20e80f7eeba499142fff8ecf6d14d4d7feb27f57; retrieved 2026-09-21T10:55:31.550Z.