GAA17CA524 · Boeing A75N1(PT17) UNDESIGNAT
Boeing A75N1(PT17) UNDESIGNAT · Accident: nose over/nose down during landing
From Pioneer Airport (WS17) to Pioneer Airport (WS17)
Event
- NTSB case
- GAA17CA524
- 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
- Unknown
- 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
Boeing A75N1(PT17) UNDESIGNAT
- Aircraft type
- Boeing A75
- 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
- N52813
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Pioneer Airport (WS17), Oshkosh, WITo Pioneer Airport (WS17), Oshkosh, WI
- Aircraft age
- About 77 years (built 1940)
- 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
- Landing
- Defining eventThe 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
- Nose over/nose down
- 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
- Aircraft › Aircraft oper/perf/capability
- Aircraft › Aircraft systems
- Personnel issues › Task performance
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The pilot of the tailwheel-equipped biplane reported that, during the landing roll, about halfway down the grass runway, the biplane "very quickly" inverted. After exiting the biplane, he examined the runway and saw where the propeller had dug in and viewed skid marks in the grass "where it was obvious that the brakes had been applied and locked up." The airplane sustained substantial damage to the vertical and horizontal stabilizer.
The pilot reported that there were no preaccident mechanical failures or malfunctions with the biplane that would have precluded normal operation.
The automated weather observation system about 1 nautical mile from the accident site reported, about the time of the accident, wind from 230° at 7 knots, gusting to 14 knots. The pilot landed on runway 31.
Probable cause
The pilot’s overapplication of the brakes, which resulted in the biplane coming to rest inverted.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record GAA17CA524
- Event ID
- 20170911X20445
- Case number
- GAA17CA524
- Dataset
- full-current
- Source SHA-256
- 5cf380f0061817c0331a6b2d8cc7e0ee3a79bea469a1001dc5c10e56f35f5ab3
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: 091a914dd4732761c343483662cd371cf91166d6cd3e7946e60343517b90f742; retrieved 2026-09-16T05:49:18.944Z.