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NTSB Report
December 27, 1989 · Beech 33 · N875R
Gorman, CA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
December 27, 1989
Injury Outcomes
2 injuries (2 minor injuries), 3 uninjured
Location
Gorman, CA
Aircraft
Beech 33
Tail Number
N875R
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
LAX90LA057
DURING CRUISE FLIGHT AT 7,500 FT THE PILOT NOTICED THE RPM FLUCTUATING 50-100 RPM. THE PROP THEN STARTED CYCLING 'WILDLY'. THE PILOT WAS ABLE TO STABILIZE THE CYCLING BY THROTTLING BACK, AND ELECTED TO GLIDE TO AN AIRPORT. POWER LINES WERE OBSERVED ACROSS THE APPROACH TO RWY 26. THE AIRCRAFT LANDED SHORT ON TOP OF A HILL AND ROLLED INTO A RAVINE. THE PILOT REPORTED THAT THE PROP GOVERNOR HAD 235 HRS SINCE OVERHAUL.
NTSB Probable Cause
THE MALFUNCTIONING PROPELLER GOVERNOR, AND THE PILOT'S MISJUDGEMENT OF ALTITUDE AND DISTANCE OF THE APPROACH PATH DURING AN EMERGENCY LANDING. FACTORS CONTRIBUTING TO THE ACCIDENT WERE: THE POWER LINES ACROSS THE APPROACH PATH TO THE RUNWAY AND THE SURROUNDING TERRAIN CONDITIONS.
Full Narrative
DURING CRUISE FLIGHT AT 7,500 FT THE PILOT NOTICED THE RPM FLUCTUATING 50-100 RPM. THE PROP THEN STARTED CYCLING 'WILDLY'. THE PILOT WAS ABLE TO STABILIZE THE CYCLING BY THROTTLING BACK, AND ELECTED TO GLIDE TO AN AIRPORT. POWER LINES WERE OBSERVED ACROSS THE APPROACH TO RWY 26. THE AIRCRAFT LANDED SHORT ON TOP OF A HILL AND ROLLED INTO A RAVINE. THE PILOT REPORTED THAT THE PROP GOVERNOR HAD 235 HRS SINCE OVERHAUL.
Flight
Event TypeAccident
Event Time11:00 PST
Nearest AirportQuail Lake (0nm N)
Runway26
Runway Length3180 ft
Runway Width60 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBeech 33
Tail NumberN875R
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · IO-470-J · Reciprocating · 225
Seats4
People & Injuries
Injury Summary2 injuries (2 minor injuries), 3 uninjured
Fatal0
Serious0
Minor2
Uninjured3
Total5
Crew 1Age 39 · Third Class
Conditions
ConditionsVMC
LightDaylight
Wind220° @ 8 kt
Visibility50 sm
CeilingNone
Temperature / Dew Point45 C / 0 C
Altimeter30.00 inHg
Weather SourcePILO