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NTSB accident investigation · Dehavilland Beaver DHC 2 · Ketchikan, AK · June 1, 2018

Accident · Minor injuriesData collectionFinal report
Date
June 1, 2018, 11:00 local (19:00 UTC)
Place
Ketchikan, AK
Injuries
6 minor, 1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N203KLDehavilland Beaver DHC 2
Defining event
Landing-landing roll: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report November 5, 2018
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
FAA report
20180601006789A
Case key
97391

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

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Probable cause

The pilot’s failure to maintain pitch and directional control during a water landing.

Findings · 5

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: pitch controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedAll aircraft: 526 casesProbable cause
Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedAll aircraft: 3,958 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotAll aircraft: 9,295 casesProbable cause
Wind: crosswindEnvironmental issues › Conditions/weather/phenomena · Response/compensationAll aircraft: 1,008 cases
Wind: sudden wind shiftEnvironmental issues › Conditions/weather/phenomena · Effect on operationAll aircraft: 114 cases

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 approach to the ocean bay, the float-equipped airplane encountered very light turbulence. The touchdown was normal, but seconds later he "felt" a strong wind on the airplane's tail from the left that lifted the tail. The front of the right float submerged, and he immediately "pulled back and left" on the controls with no response. Subsequently, the right float struts collapsed, and the right wing impacted the water, the airplane spun about 90° to 120° to the right, the left wing impacted the water, and the airplane came to rest upright on the floats. The airplane sustained substantial damage to both wings. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. An automated weather observation system about 20 nautical miles from the accident site reported that, about the time of the accident, the wind was from 160° at 9 knots. The pilot landed to the south.

Factual narrative

The pilot reported that, during approach to the ocean bay, the float-equipped airplane encountered very light turbulence. The touchdown was normal, but seconds later he "felt" a strong wind on the tail from the left, that lifted the tail of the airplane. The front of the right float submerged, and he immediately "pulled back and left" on the controls with no response. Subsequently, the right float struts collapsed and the right wing impacted the water, the airplane spun approximately 90° to 120° to the right, the left wing impacted the water, and the airplane came to rest upright on the floats. The airplane sustained substantial damage to both wings. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. An automated weather observation system about 20 nautical miles from the accident site reported that, about the time of the accident, the wind was from 160° at 9 knots. The pilot landed to the south.

Aircraft

Registration
N203KL
Reported as
Dehavilland Beaver DHC 2 (I)
Category
Airplane
Serial number
1460
Built
1961
Airframe hours
21,240
Engine
Pratt & Whitney R-985, 450 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 135
Operator
Rdm Pilot/Guide Ltd
Registered owner
Rdm Pilot/Guide Ltd
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 1, 2018
Departed
Ketchikan, AK
Destination
Ketchikan, AK
Flight plan
Unknown
Equipment
None

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
43
Injuries
None
Certificate
Airline transport
Airplane ratings
Multi-engine land, Single-engine sea, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Without waivers/limitations
Last flight review
May 30, 2018
Seat
Left
Restraint
3-point
Flight hours
11,900 total · 3,000 in this make and model · 8,900 as pilot in command · 90 in the last 90 days · 45 in the last 30 days · 5.3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
160° at 9 knots
Visibility
6 statute miles
Lowest ceiling
3,200 ft broken
Temperature
50 °F, dew point 45 °F
Altimeter
29.79 inHg
Turbulence
Light
Observed at
PAKT, 20 nm away

Docket · 2

The files NTSB released with the investigation on September 6, 2018, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.7 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.