20190925015729A

Accident · Substantial damage

FAA accident report · Stinson 108-3 · Tyonek, AK · September 25, 2019

Date
September 25, 2019 · 19:00 local
Place
Tyonek, AK
Phase of flight
Takeoff: Climb Out
Operating rules
General operating rules (Part 91)
Damage
Substantial damage
Aircraft
N6533M
NTSB investigation
NTSBANC19TA055
Reported as
Stinson 108-3
People aboard
4
Fatal injuries
0
Other injuries
2
Pilot’s certificate
Private pilot
Pilot’s flight hours
850 total200 in this make and model15 in the last 90 days

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry 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.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

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.

As the FAA filed it

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.

NTSB investigation

The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.