# Accident 20190925015729A: Stinson 108-3, Tyonek, AK, September 25, 2019

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: September 25, 2019, 19:00 local time
- Place: Tyonek, AK
- Damage: Substantial damage
- Phase of flight: Takeoff: Climb Out
- Operating rules: General operating rules (Part 91)
- Location: 60.9789° N, 151.8922° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=60.9789&lon=-151.8922&mi=10
- Aircraft: N6533M, registered now (https://openairdocs.org/aircraft/N6533M) (OpenAirDocs)
- Registry model: Stinson 108-3 (registry code 9230408, https://openairdocs.org/model/stinson-108-3) (OpenAirDocs)
- Registry engine: Franklin 6A4165 series (registry code 27025, https://openairdocs.org/engine/franklin-6a4165-series) (OpenAirDocs)
- Reported make and model: STINSON 108-3
- People aboard: 4
- Fatal injuries: 0
- Other injuries: 2
- Pilot certificates: Private pilot
- Pilot flight hours: 850 total, 200 in this make and model, 15 in the last 90 days
- NTSB investigation: [NTSB ANC19TA055](https://openairdocs.org/ntsb/ANC19TA055) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20190925015729A

## Narrative

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

PILOT IN COMMAND/OWNER STATED THAT HE IS FAMILIAR WITH THE LANDING AND TAKEOFF AREA WITH MORE THAN SIX TRIPS IN AND OUT OF THE UNIMPROVED SURFACE AREA OVER THE LAST SEVERAL MONTHS.

IT WAS HIS SECOND TRIP INTO THE AREA THAT DAY. THE FIRST TRIPS HE HAD DELIVERED SOME SUPPLIES.

WINDS BRIEFED TO BE 20 TO 30 KNOTS GUSTING TO 40 KNOTS

WHEN THE ACCIDENT OCCURRED HE HAD JUST PICK UP HIS BROTHER IN LAW AND HIS BACKPACK, HE CONFIRMED WEIGHT AND BALANCE AND DETERMINED HE WAS ABOUT 300 POUNDS BELOW MAX WEIGHT.

THE TAKEOFF ROLL WAS NORMAL AND CLIMB OUT, WHEN REACHING APPROXIMATELY 70 KNOTS IAS AND CLIMBING ABOVE THE TREE LINE AT BEST ANGLE OF CLIMB (VX) THE SUDDEN WIND EFFECT/ GUST CREATED A STALL CONDITION WHICH PLACED THE AIRCRAFT IN A POSITION THAT HE COULD NOT RECOVER FROM. THE AIRCRAFT IMPACTED SEVERAL TREES AND THE COME TO REST ON THE LANDING GEAR IN A SMALL CLEARING.

## 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 ANC19TA055](https://openairdocs.org/ntsb/ANC19TA055), Sep 26, 2019: Stinson 108 (N6533M), Tyonek, AK, substantial damage. Probable cause: The pilot’s exceedance of the airplane’s critical angle of attack during a short field takeoff, which resulted in an aerodynamic stall and loss of control.

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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