ANC17FA035 · Aeronca 15AC
Aeronca 15AC · Accident: low altitude operation/event en route
From Big Lake, AK to Anchorage, AK
Event
- NTSB case
- ANC17FA035
- 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
- 1 · 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
Aeronca 15AC
- Aircraft type
- Aeronca 15
- 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
- N1370H
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Big Lake, AKTo Anchorage, AK
- Aircraft age
- About 68 years (built 1949)
- 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
- En route · cruise
- 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
- Low altitude operation/event
- 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
- Personnel issues › Psychological
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The pilot was shuttling friends to his remote recreational cabin in the airplane, and the accident occurred during the return trip after dropping off the first group of friends. When the airplane failed to arrive to pick up the second group of friends, a family friend initiated an aerial search and found the wreckage.
The accident site was located about 600 ft from a river that the pilot reportedly often flew along at low altitude during his return flights from his remote cabin. The airplane initially impacted the top of an estimated 45-ft-tall tree located about 150 ft from the river bank. After the initial impact, the airplane traveled about 450 ft before coming to rest inverted. A postaccident examination of the airframe and engine revealed no evidence of mechanical malfunctions or failures that would have precluded normal operation.
Given the lack of mechanical deficiencies with the airplane, the elliptical impact areas to the airplane's severed left wing, and the pilot's habit of flying low level along the river, it is likely that the pilot inadvertently collided with a tree while in cruise flight at low-altitude.
Probable cause
The pilot's failure to maintain clearance from trees during low-altitude flight, which resulted in an in-flight collision and impact with terrain.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record ANC17FA035
- Event ID
- 20170715X21637
- Case number
- ANC17FA035
- 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: c48e2e3f0ba3a7de5d18cc2ab0ec95be551985e053eddb0bcad89d7f20a0ef72; retrieved 2026-09-15T06:08:21.633Z.