# Accident 20200922012459A: Cessna 170B, Big Lake, AK, September 22, 2020

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: September 22, 2020, 19:00 local time
- Place: Big Lake, AK
- Airport: Big Lake Airport
- Damage: Substantial damage
- Phase of flight: Landing: Approach
- Operating rules: General operating rules (Part 91)
- Location: 61.5874° N, 150.3984° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=61.5874&lon=-150.3984&mi=10
- Aircraft: N4380B, registered now (https://openairdocs.org/aircraft/N4380B) (OpenAirDocs)
- Registry model: Cessna 170B (registry code 2072306, https://openairdocs.org/model/cessna-170b) (OpenAirDocs)
- Registry engine: Continental 0-300 series (registry code 17022, https://openairdocs.org/engine/continental-0-300-series) (OpenAirDocs)
- Reported make and model: CESSNA 170B
- People aboard: 1
- Fatal injuries: 0
- Other injuries: 0
- Pilot certificates: Airline transport, flight instructor
- Pilot flight hours: 8,839 total, 297 in this make and model, 5 in the last 90 days
- NTSB investigation: [NTSB ANC20LA099](https://openairdocs.org/ntsb/ANC20LA099) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20200922012459A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

PILOT WAS LANDING ON A GRAVEL BAR ON THE BIG SUSITNA RIVER. WHILE ON SHORT FINAL AT 20 FT. ELEVATION  THE AIRCRAFT LOSS POWER. THE AIRCRAFT TOUCHED DOWN SHORT OF THE GRAVEL BAR IN THE WATER AND THE AIRCRAFT ROLLED OVER UPSIDE DOWN.

WEATHER WAS HIGH OVERCAST , WITH NO PRECIPITATION.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB ANC20LA099](https://openairdocs.org/ntsb/ANC20LA099), Sep 23, 2020: Cessna 170B (N4380B), Big Lake, AK, substantial damage. Probable cause: The pilot’s failure to utilize carburetor heat while flying in conditions conducive to carburetor icing, which resulted in a total loss of engine power.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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