ANC23LA057

NTSB accident investigation · Dehavilland DHC-2 MK. I(L20A) · Point Baker, AK · July 26, 2023

Accident · No injuriesClass 4 · LimitedFinal report
Date
July 25, 2023, 16:30 local (Jul 26, 2023, 00:30 UTC)
Place
Point Baker, AK
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N6782LDehavilland DHC-2 MK. I(L20A)
Defining event
Takeoff: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Alaska Regional Office
Parties
FAA/FSDO
FAA report
20230725009879A
Case key
192719

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The pilot’s failure to maintain directional control during takeoff with a quartering tailwind.

Findings · 3

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedDehavilland DHC-2 MK. I(L20A): 3 casesAll aircraft: 3,958 casesProbable cause
Wind: tailwindEnvironmental issues › Conditions/weather/phenomena · Effect on operationDehavilland DHC-2 MK. I(L20A): 2 casesAll aircraft: 594 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The pilot reported that during takeoff in a float-equipped airplane, with left quartering tailwind, a gust of wind resulted in a loss of directional control. He aborted the takeoff but was unable to regain control and the left wing impacted a pole which rotated the airplane to the left and the right wing struck a boat. The airplane sustained substantial damage to both wings. The pilot reported that there were no pre-accident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

Aircraft

Registration
N6782L
Reported as
Dehavilland DHC-2 MK. I(L20A)
Category
Airplane
Serial number
820
Built
1955
Engine
Pratt & Whitney R985, 450 horsepower, reciprocating
Damage
Substantial damage
Flight
Business · Part 91
Operator
Seawind Aviation Inc
Registered owner
Seawind Aviation Inc
Airworthiness certificate
Standard, Normal
Departed
Point Baker, AK
Equipment
ADS-B, Electronic multifunction display

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
28
Injuries
None
Certificates
Flight instructor, Airline transport
Airplane ratings
Multi-engine land, Single-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Class 1, With waivers/limitations
Last flight review
May 9, 2023
Seat
Left
Restraint
3-point
Flight hours
4,200 total · 1,100 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
90° at 4 knots
Visibility
10 statute miles
Lowest ceiling
4,600 ft broken
Temperature
64 °F, dew point 55 °F
Altimeter
30.02 inHg
Observed at
APG, 35 nm away
METAR
PAPG 252356Z 09004KT 10SM BKN046 18/13 A3002 RMK AO2 SLPNO 6//// T01830128 52007

Docket · 2

The files NTSB released with the investigation on February 1, 2024, on NTSB’s docket system: statements, records, photos and specialists’ reports. 8.0 MB in all.

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.

Other investigations on N6782L · 1

Matched to the same aircraft by N-number and date.