20220625012219A

Accident · Substantial damage

FAA accident report · Dehavilland BEAVER U-6A · Kokhanok, AK · June 25, 2022

Date: June 25, 2022 · 19:15 local
Place: Kokhanok, AK
Airport: Kokhanok
Phase of flight: Takeoff: Departure Roll
Operating rules: General operating rules (Part 91)
Damage: Substantial damage
Aircraft: N600NL
NTSB investigation: NTSBANC22LA050
Reported as: Dehavilland Beaver U-6A
People aboard: 7
Fatal injuries: 0
Other injuries: 0
Pilot’s certificate: Airline transport
Pilot’s flight hours: 19,327 total9,000 in this make and model49 in the last 90 days

N600NLRegistered now · Dehavilland BEAVER U-6AS/N 857 · Built 1954 Airframe modelDehavilland BEAVER U-6A Engine modelPratt & Whitney R-985 seriesReciprocating

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.

Dehavilland beaverprivacy data omitted in nondalton, AK crashed during takeoff from the south side of iliamna lake near Kokhanok, AK. The pilot reported that he was taking off parallel to the shore line with approximately 15 to 20 mile per hour headwinds 20 degrees off the nose of the aircraft. During takeoff the floatplane was onstep when a gust of wind caused the nose of the aircraft to turn 90 degrees. A second gust of wind caused the aircraft to turn an additional 90 degrees so the aircraft was then 180 degrees from the original takeoff direction. This caused the 15 to 20 mile per headwind to now be a tailwind. The aircraft settled back to the water and one of the floats caught a wave which caused the airplane to flip over and then came to rest inverted. All the passengers were evacuated safely with only minor injuries.

As the FAA filed it

DEHAVILLAND BEAVER^PRIVACY DATA OMITTED^ IN NONDALTON, AK CRASHED DURING TAKEOFF FROM THE SOUTH SIDE OF ILIAMNA LAKE NEAR KOKHANOK, AK. THE PILOT REPORTED THAT HE WAS TAKING OFF PARALLEL TO THE SHORE LINE WITH APPROXIMATELY 15 TO 20 MILE PER HOUR HEADWINDS 20 DEGREES OFF THE NOSE OF THE AIRCRAFT. DURING TAKEOFF THE FLOATPLANE WAS ONSTEP WHEN A GUST OF WIND CAUSED THE NOSE OF THE AIRCRAFT TO TURN 90 DEGREES. A SECOND GUST OF WIND CAUSED THE AIRCRAFT TO TURN AN ADDITIONAL 90 DEGREES SO THE AIRCRAFT WAS THEN 180 DEGREES FROM THE ORIGINAL TAKEOFF DIRECTION. THIS CAUSED THE 15 TO 20 MILE PER HEADWIND TO NOW BE A TAILWIND. THE AIRCRAFT SETTLED BACK TO THE WATER AND ONE OF THE FLOATS CAUGHT A WAVE WHICH CAUSED THE AIRPLANE TO FLIP OVER AND THEN CAME TO REST INVERTED. ALL THE PASSENGERS WERE EVACUATED SAFELY WITH ONLY MINOR INJURIES.

NTSB investigation

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

NTSB ANC22LA050Accident · No injuriesClass 4 · LimitedFinal reportKokhanok, AKThe pilot’s failure to maintain directional control during takeoff in gusting wind conditions which resulted in a loss of control and impact with the water.Jun 26, 2022 · Substantial damage