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NTSB Report
February 19, 1985 · Bell 214B1 · N314RM
Lowell, OR
Overview
Report Status
Preliminary report
Event Type
Accident
Date
February 19, 1985
Injury Outcomes
2 injuries (2 minor injuries)
Location
Lowell, OR
Aircraft
Bell 214B1
Tail Number
N314RM
Operator
Rocky Mountain Helicopters
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
SEA85LA060
THE ACFT COLLIDED WITH HILLY TERRAIN DURING AN EMERGENCY AUTOROTATION LANDING ATTEMPT FOLLOWING A REPORTED ENG OVERSPEED. THE CREW REPORTED THERE WAS AN INDICATION OF ENG OVERSPEED WHICH THEY COULD NOT CONTROL. POST ACC EXAMINATIONREVEALED NO EVIDENCE OF OVERSPEED OR FAILURE OF ANY CONTROL DEVICES THAT WOULD MATERIALLY HAVE AFFECTED THE FLT CREWS ABILITY TO MAINTAIN ENG RPM AT THE PROPER AND/OR DESIRED RATE. ROTOR RPM DECAY WAS ALSO REPORTED BY THE FLT CREW EVEN WITH THE ENG AT THE REPORTED HIGH RPM. NO REASON FOR THE ALLEGED CONDITION WAS FOUND IN CONTINUITY OF THE PWR TRAIN IN AN EXAMINATION OF THE POWERPLANT & DRIVE TRAIN AFTER ENG SHUT DOWN BY GROUND PERSONNEL.
Full Narrative
THE ACFT COLLIDED WITH HILLY TERRAIN DURING AN EMERGENCY AUTOROTATION LANDING ATTEMPT FOLLOWING A REPORTED ENG OVERSPEED. THE CREW REPORTED THERE WAS AN INDICATION OF ENG OVERSPEED WHICH THEY COULD NOT CONTROL. POST ACC EXAMINATIONREVEALED NO EVIDENCE OF OVERSPEED OR FAILURE OF ANY CONTROL DEVICES THAT WOULD MATERIALLY HAVE AFFECTED THE FLT CREWS ABILITY TO MAINTAIN ENG RPM AT THE PROPER AND/OR DESIRED RATE. ROTOR RPM DECAY WAS ALSO REPORTED BY THE FLT CREW EVEN WITH THE ENG AT THE REPORTED HIGH RPM. NO REASON FOR THE ALLEGED CONDITION WAS FOUND IN CONTINUITY OF THE PWR TRAIN IN AN EXAMINATION OF THE POWERPLANT & DRIVE TRAIN AFTER ENG SHUT DOWN BY GROUND PERSONNEL.
Flight
Event TypeAccident
Event Time17:25 PST
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBell 214B1
Tail NumberN314RM
Aircraft CategoryHeli
DamageSubstantial
OperatorRocky Mountain Helicopters
Operating RulePart 133
Engines1
Engine TypeTurboshaft
Engine DetailsLycoming · T5508D · Turboshaft · 2050
Seats7
People & Injuries
Injury Summary2 injuries (2 minor injuries)
Fatal0
Serious0
Minor2
Uninjured0
Total2
Crew 1Age 36 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind270° @ 10 kt
Visibility20 sm
CeilingBroken clouds 25000 ft
Temperature / Dew Point52 / 0 C
Altimeter0
Weather SourceWIT