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NTSB Report
July 17, 1991 · Piper PA32-300 · N5233S
Corona, CA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
July 17, 1991
Injury Outcomes
2 injuries (2 fatalities)
Location
Corona, CA
Aircraft
Piper PA32-300
Tail Number
N5233S
Operator
Darryl Rhodes & James Hanenber
Injuries
Fatal
Aircraft Damage
Substantial
NTSB Number
LAX91LA315
WHEN THE AIRCRAFT'S ENGINE FAILED DURING A VISUAL APPROACH FOR LANDING THE PILOT EXECUTED AN EMERGENCY LANDING. DURING THE EMERGENCY DESCENT HE NEGLECTED TO MAINTAIN AN AIRSPEED ABOVE THE AIRCRAFT'S STALL SPEED. THE AIRCRAFT STALLED AND IMPACTED THE GROUND IN ROUGH TERRAIN. AN EXAMINATION OF THE POWER PLANT AFTER THE ACCIDENT DISCLOSED THAT THE LEFT MAGNETO IMPULSE COUPLING FLYWEIGHTS STRUCK THE STOP PINS. THE FLYWEIGHT-STOP PIN IMPACT SEIZED THE MAGNETO AND SHEARED THE ACCESSORY DRIVE GEAR ALIGNMENT DOWEL. THIS FAILURE RESULTED IN THE UNCOUPLING THE ACCESSORY DRIVE TRAIN AND THE ENGINE FAILED.
NTSB Probable Cause
THE PILOT'S FAILURE TO MAINTAIN AN AIRSPEED ABOVE THE AIRCRAFT'S STALL SPEED AFTER THE ENGINE FAILED. FACTORS CONTRIBUTING TO THE ACCIDENT WERE: THE FAILURE OF THE ENGINE, MAGNETO AND ACCESSORY DRIVE GEAR, THE ROUGH TERRAIN CONDITIONS OVER WHICH THE ENGINE FAILED AND THE PILOT-IN-COMMANDS LACK OF TOTAL EXPERIENCE.
Full Narrative
WHEN THE AIRCRAFT'S ENGINE FAILED DURING A VISUAL APPROACH FOR LANDING THE PILOT EXECUTED AN EMERGENCY LANDING. DURING THE EMERGENCY DESCENT HE NEGLECTED TO MAINTAIN AN AIRSPEED ABOVE THE AIRCRAFT'S STALL SPEED. THE AIRCRAFT STALLED AND IMPACTED THE GROUND IN ROUGH TERRAIN. AN EXAMINATION OF THE POWER PLANT AFTER THE ACCIDENT DISCLOSED THAT THE LEFT MAGNETO IMPULSE COUPLING FLYWEIGHTS STRUCK THE STOP PINS. THE FLYWEIGHT-STOP PIN IMPACT SEIZED THE MAGNETO AND SHEARED THE ACCESSORY DRIVE GEAR ALIGNMENT DOWEL. THIS FAILURE RESULTED IN THE UNCOUPLING THE ACCESSORY DRIVE TRAIN AND THE ENGINE FAILED.
Flight
Event TypeAccident
Event Time15:00 PDT
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftPiper PA32-300
Tail NumberN5233S
Aircraft CategoryAir
DamageSubstantial
OperatorDarryl Rhodes & James Hanenber
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · IO-540-K1A5 · Reciprocating · 300
Seats6
People & Injuries
Injury Summary2 injuries (2 fatalities)
Fatal2
Serious0
Minor0
Uninjured0
Total2
Crew 1Age 44 · Third Class
Conditions
ConditionsVMC
LightDaylight
Wind280° @ 10 kt
Visibility4 sm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter29.00 inHg
Observation Time21:50
Weather SourceWFAC