# NTSB ANC82DAG40: Aeronca 7GC, N8933R, Tyonek, AK, August 4, 1982

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Final report
- Date: August 4, 1982, 08:30 local (16:30 UTC)
- Place: Tyonek, AK
- Location: 61.0681° N, 151.1369° W: Placed by OpenAirDocs: center of Tyonek, AK, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=61.0681&lon=-151.1369&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor, 1 uninjured
- Status: Completed, report August 4, 1983
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 72892
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC82DAG40
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/72892/pdf
- Page: https://openairdocs.org/ntsb/ANC82DAG40

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- In flight encounter with weather, cruise - normal
  - weather condition - fog (contributing factor)
  - vfr flight into imc - continued, pilot in command (cause)
- In flight collision with terrain/water, maneuvering - turn to reverse direction
  - altitude - improper, pilot in command (cause)

## Analysis

THE PLT STATED HE DEPARTED ANCHORAGE FOR THE KUSTATAN RIVER. HE ENCOUNTERED GROUND FOG ENROUTE & LANDED ON A BEACH. ABOUT 1-1/2 HRS LATER THE FOG CLEARED & HE TOOK OFF. HE AGAIN ENCOUNTERED FOG AT THE MCARTHER RIVER, BUT IT LOOKED CLEARON THE OTHER SIDE. HALFWAY ACROSS THE RIVER HE ELECTED TO TURN BACK. DURING THE TURN HE SENSED AN IMMINENT STALL & LOWERED THE NOSE ABRUPTLY. THE ACFT STRUCK THE WATER.

## Aircraft

- Registration: [N8933R](https://openairdocs.org/aircraft/N8933R), registered now, S/N 7GC-159, built 1959 (OpenAirDocs)
- Reported make and model: AERONCA 7GC
- Registry model: [Champion 7GC](https://openairdocs.org/model/champion-7gc) (registry code 21101N2) (OpenAirDocs)
- Registry engine: [Lycoming 0-290 series](https://openairdocs.org/engine/lycoming-0-290-series) (registry code 41506, 4 cycle) (OpenAirDocs)
- Category: Airplane
- Serial number: 159
- Airframe hours: 1700
- Engines: LYCOMING O-290 140 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Wm. Evans
- Registered owner: Wm. Evans
- Departed: ANCHORAGE, AK
- Destination: ANCHORAGE, AK

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 50; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; flight hours: 800 total, 500 in this make and model

## Weather

- Conditions: Instrument (IMC), Day
- Wind: calm
- Temperature: 122 °F

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19820804034819A](https://openairdocs.org/incident/19820804034819A), Aug 4, 1982: Bbavia 7GC, Tyonek, AK, Substantial damage. Flew into water while making a 180 degree turn after encountering ground fog.

## Other investigations on N8933R (2)

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 SEA77DYM36](https://openairdocs.org/ntsb/SEA77DYM36), May 30, 1977: Champion 7GC (N8933R), Grande Ronde, OR, substantial damage
- [NTSB UNK64X0110](https://openairdocs.org/ntsb/UNK64X0110), Jan 1, 1964: Champion 7GC (N8933R), Ft Collins, CO, substantial damage

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.

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