ANC22LA063

NTSB accident investigation · De Havilland DHC2 · Anchorage, AK · July 26, 2022

Accident · Serious injuriesClass 4 · LimitedFinal report
Date
July 26, 2022, 09:15 local (17:15 UTC)
Place
Anchorage, AK
Injuries
2 serious, 4 minor, 1 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N9776RDe Havilland DHC2
Defining event
Initial climb: Aerodynamic stall/spin
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
Federal Aviation Administration
FAA report
20220726007539A
Case key
105639

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 in gusting wind conditions which resulted in the wing exceeding its critical angle of attack, a loss of control and impact with the water.

Findings · 4

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: airspeedAircraft › Aircraft oper/perf/capability · Not attained/maintainedDehavilland BEAVER DHC-2 MK.1: 2 casesAll aircraft: 1,681 casesProbable cause
Performance/control parameters: angle of attackAircraft › Aircraft oper/perf/capability · Not attained/maintainedDehavilland BEAVER DHC-2 MK.1: 1 caseAll aircraft: 990 casesProbable cause
Wind: gustsEnvironmental issues › Conditions/weather/phenomena · Response/compensationDehavilland BEAVER DHC-2 MK.1: 4 casesAll aircraft: 1,199 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, he was departing in the float-equipped airplane in strong gusty wind conditions. After accelerating on the water for about 3 seconds, the airplane suddenly became airborne and crabbed into the wind about 60° to 90° from the intended takeoff path and started to climb as it continued to track away from the intended flight path. As the climb continued, the airplane stalled and impacted the water in a nose low attitude which resulted in substantial damage to the wings and fuselage. The pilot reported that there were no preaccident mechanical malfunctions or anomalies that would have precluded normal operation.

Aircraft

Registration
N9776R
Reported as
De Havilland DHC2
Category
Airplane
Serial number
1126
Built
1957
Airframe hours
16,072.7
Engine
Pratt and Whitney R985 AN 14-B, 450 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial observation · Part 135
Operator
Alaska Skyways Inc, doing business as Regal Air
Registered owner
Northstar Holdings LLC
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · July 25, 2022
Destination
King Salmon, AK
Flight plan
Company VFR
Airport
LHD · Lake Hood, runway 14, 5,400 × 150 ft, water
Equipment
ADS-B, Handheld GPS, Satellite tracking device, Onboard weather

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
41
Injuries
Minor
Certificates
Commercial, Flight instructor
Airplane ratings
Multi-engine land, Single-engine sea, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
May 18, 2022
Seat
Left
Flight hours
1,709 total · 142 in this make and model · 1,623 as pilot in command · 251 in the last 90 days · 94 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
200° at 10 knots, gusting 16
Visibility
10 statute miles
Lowest ceiling
None
Temperature
55 °F, dew point 39 °F
Altimeter
30.20 inHg
Observed at
PALH
METAR
PALH 261753Z 20010G16KT 150V230 10SM CLR 13/04 A3020 RMK AO2 SLP226 T01280044 10128 20106 51020

Docket · 2

The files NTSB released with the investigation on November 11, 2022, on NTSB’s docket system: statements, records, photos and specialists’ reports. 5.5 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.