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NTSB Report
July 31, 1989 · Robinson R22 · N933CB
Brinnon, WA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
July 31, 1989
Injury Outcomes
No injuries (2 uninjured)
Location
Brinnon, WA
Aircraft
Robinson R22
Tail Number
N933CB
Injuries
None
Aircraft Damage
Destroyed
NTSB Number
SEA89LA144
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.
NTSB 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.
Full Narrative
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.
Flight
Event TypeAccident
Event Time17:00 PDT
Nearest Airport0nm N
Runway0
Flight Plan FiledVFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftRobinson R22
Tail NumberN933CB
Aircraft CategoryHeli
DamageDestroyed
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-320-B2C · Reciprocating · 160
Seats2
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 43 · Third Class
Conditions
ConditionsVMC
LightDaylight
Wind230° @ 2 kt
Visibility15 sm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0
Weather SourcePILO