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NTSB Report
February 7, 1993 · Robinson R22 BETA · N4085M
Bend, OR
Overview
Report Status
Probable Cause
Event Type
Accident
Date
February 7, 1993
Injury Outcomes
2 injuries (2 minor injuries)
Location
Bend, OR
Aircraft
Robinson R22 BETA
Tail Number
N4085M
Operator
Puget Sound Helicopter
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
SEA93LA064
THE PILOT REPORTED THAT AT TAKEOFF, THE CEILING WAS 350 FEET AGL AND VISIBILITY WAS TWO MILES. THE FLIGHT TOOK OFF AND HEADED NORTH AT AN ALTITUDE OF 250 FEET AGL, FOLLOWING A HIGHWAY. APPROXIMATELY SEVEN MILES INTO THE FLIGHT, THE CEILING AND VISIBILITY DETERIORATED AND THE PILOT INITIATED A MEDIUM BANK TURN TO THE LEFT. DURING THE TURN, THE AIRSPEED DECLINED AND THE LOW ROTOR RPM HORN SOUNDED. THE PILOT LOWERED THE NOSE AND INCREASED COLLECTIVE. DUE TO THE CLOSENESS OF THE TREES, THE PILOT ESTABLISHED THE BEST RATE OF DESCENT AND 'MILKED' THE RPM FOR A LANDING ON THE HIGHWAY. THE PILOT WAS UNABLE TO EXECUTE THE PROPER POWER OFF LANDING PROCEDURE AND THE HELICOPTER LANDED HARD. THE SKIDS COLLAPSED AND THE HELICOPTER ROLLED ONTO ITS LEFT SIDE.
NTSB Probable Cause
ROTOR RPM WAS NOT MAINTAINED. FACTORS TO THE ACCIDENT WERE: LOW CEILING AND POOR INFLIGHT PLANNING.
Full Narrative
THE PILOT REPORTED THAT AT TAKEOFF, THE CEILING WAS 350 FEET AGL AND VISIBILITY WAS TWO MILES. THE FLIGHT TOOK OFF AND HEADED NORTH AT AN ALTITUDE OF 250 FEET AGL, FOLLOWING A HIGHWAY. APPROXIMATELY SEVEN MILES INTO THE FLIGHT, THE CEILING AND VISIBILITY DETERIORATED AND THE PILOT INITIATED A MEDIUM BANK TURN TO THE LEFT. DURING THE TURN, THE AIRSPEED DECLINED AND THE LOW ROTOR RPM HORN SOUNDED. THE PILOT LOWERED THE NOSE AND INCREASED COLLECTIVE. DUE TO THE CLOSENESS OF THE TREES, THE PILOT ESTABLISHED THE BEST RATE OF DESCENT AND 'MILKED' THE RPM FOR A LANDING ON THE HIGHWAY. THE PILOT WAS UNABLE TO EXECUTE THE PROPER POWER OFF LANDING PROCEDURE AND THE HELICOPTER LANDED HARD. THE SKIDS COLLAPSED AND THE HELICOPTER ROLLED ONTO ITS LEFT SIDE.
Flight
Event TypeAccident
Event Time09:20 PST
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftRobinson R22 BETA
Tail NumberN4085M
Aircraft CategoryHeli
DamageSubstantial
OperatorPuget Sound Helicopter
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-320 · Reciprocating · 160
Seats2
People & Injuries
Injury Summary2 injuries (2 minor injuries)
Fatal0
Serious0
Minor2
Uninjured0
Total2
Crew 1Age 31 · Second Class
Conditions
ConditionsIMC
LightDaylight
WindCalm
CeilingOvercast 200 ft
Temperature / Dew Point34 C / 0 C
Altimeter0
Weather SourceWIT