ANC10CA016 · Piper PA-17
Piper PA-17 · Accident: collision during takeoff/landing on approach
From Skwentna, AK to Skwentna, AK
Narrative check · The NTSB narrative appears to contradict this record's location and departure or destination. Values are shown as recorded, not corrected; compare with the narrative.
Event
- NTSB case
- ANC10CA016
- 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
Piper PA-17
- Aircraft type
- Piper PA-17
- 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
- N4568H
- Operator
- Ben Knapp
- Onboard fatalities
- Unknown
- Route Narrative disagrees
- From Skwentna, AKTo Skwentna, AK
- 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
- Approach · VFR pattern final
- 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
- Collision during takeoff/landing
- 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
- Personnel issues › Action/decision
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The private pilot reported that he was on a personal flight and was attempting to land on a frozen lake. While on final approach to land, he said the airplane encountered a wind gust and that the left wing struck the top of a tree. The airplane descended and collided with terrain short of the intended landing site. The pilot stated that there were no preaccident mechanical problems with the airplane.
Probable cause
The pilot's decision to make a low-altitude approach to land over trees in gusting winds, which resulted in an in-flight collision with a tree and a loss of control.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record ANC10CA016
- Event ID
- 20100201X91417
- Case number
- ANC10CA016
- 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: e1d1025378e010cb43a22b7ff6bf0fd86edd81cccd6662061a29cf418347e3aa; retrieved 2026-09-15T13:39:36.594Z.