SEA89LA144

NTSB accident investigation · Robinson R22 · Brinnon, WA · July 31, 1989

Accident · No injuriesLimited investigationFinal report
Date
July 30, 1989, 17:00 local (Jul 31, 1989, 00:00 UTC)
Place
Brinnon, WA
Injuries
2 uninjured
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N933CBRobinson R22
Weather
Visual (VMC) · Day
Status
Completed · report August 22, 1990
Report
Approved by Office Director
FAA report
19890730029979A
Case key
41057

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 inadequate in-flight planning. The helicopter skid contacted the water as a result of the pilot's misjudgement of clearance above the water.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

In flight collision with terrain/waterDescent - normal
Terrain condition - water,glassyFactor
Proper altitude - not maintainedPilot in commandCause
In-flight planning/decision - inadequatePilot in commandCause
Clearance - misjudgedPilot in command

Analysis

During a pleasure flight, the pilot felt a low frequency vibration and opted to initiate a precautionary landing. Due to unsuitable terrain, the pilot continued the flight over glassy water to land on a beach area. The pilot misjudged the distance above the water resulting in the left skid contacting the water first. The pilot stated that the engine stalled and stopped and the helicopter settled softly in the water and sank. The pilot reported that there were no mechanical failures or malfunctions with the helicopter at the time of the accident.

Aircraft

Registration
N933CB
Reported as
Robinson R22
Category
Helicopter
Serial number
1083
Engine
Lycoming O-320-B2C, 160 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Registered owner
Brown, Charlie L.H.
Departed
Fox Island, WA
Destination
Hamma Hamma, WA
Flight plan
VFR

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
43
Certificate
Private
Airplane ratings
Single-engine land, Single-engine sea
Medical
Class 3, Valid Medical--w/ waivers/lim
Flight hours
246 total · 103 in this make and model · 191 as pilot in command · 85 in the last 90 days · 58 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
230° at 2 knots
Visibility
15 statute miles
Lowest ceiling
None
Temperature
-0 °F, dew point -0 °F

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 N933CB · 1

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