SEA08CA171

NTSB accident investigation · de Havilland Beaver DHC-2 MK.1 · Kenmore, WA · August 4, 2008

Accident · No injuriesData collectionFinal report
Date
August 4, 2008, 15:30 local (22:30 UTC)
Place
Kenmore, WA
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Taxi
Aircraft
N53BVde Havilland Beaver DHC-2 MK.1
Defining event
Taxi-from runway: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report August 28, 2008
Report
Approved by Office Director
FAA report
20080804845639A
Case key
68627

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 aircraft control while water taxiing. Contributing to the accident were the pilot's failure to compensate for the wind condition and a tailwind.

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.

Wind: tailwindEnvironmental issues › Conditions/weather/phenomena · Contributed to outcomeDehavilland BEAVER DHC-2 MK.1: 1 caseAll aircraft: 594 casesProbable cause
Performance/control parameters: crosswind correctionAircraft › Aircraft oper/perf/capability · Not attained/maintainedDehavilland BEAVER DHC-2 MK.1: 2 casesAll aircraft: 184 casesProbable cause
Terrain: waterEnvironmental issues › Physical environment · Not specifiedDehavilland BEAVER DHC-2 MK.1: 1 caseAll aircraft: 97 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 after landing the float-equipped airplane in the water, and while on the step with a 7 to 10 knot, 45 to 50 degree left crosswind, the wind "sheared" to a [left] quartering tailwind. After veering to the left the pilot applied "strong" right rudder to counter the left yaw. The airplane's right wing tip subsequently struck the water, which resulted in substantial damage to the right wing and right aileron.

Factual narrative

The pilot reported that after landing the float-equipped airplane in the water, and while on the step with a 7 to 10 knot, 45 to 50 degree left crosswind, the wind "sheared" to a [left] quartering tailwind. After veering to the left the pilot applied "strong" right rudder to counter the left yaw. The airplane's right wing tip subsequently struck the water, which resulted in substantial damage to the right wing and right aileron.

Aircraft

Registration
N53BV
Reported as
de Havilland Beaver DHC-2 MK.1
Category
Airplane
Serial number
52-6119
Engine
Pratt & Whitney R-985, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Richard P Emerson
Registered owner
Pendril Sound LLC
Airworthiness certificate
Standard, Normal
Departed
S60 · Kenmore, WA
Destination
S60 · Kenmore, WA
Airport
S60 · Kenmore Air Harbor Inc SPB, runway 36

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
46
Certificate
Private
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 3
Flight hours
412 total · 108 in this make and model · 47 in the last 90 days · 38 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
Variable at 10 knots

FAA reports on this event · 1

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