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NTSB Report
March 7, 1993 · Aero Commander 500 · N3836C
Everglades City, FL
Overview
Report Status
Probable Cause
Event Type
Incident
Date
March 7, 1993
Injury Outcomes
No injuries (7 uninjured)
Location
Everglades City, FL
Aircraft
Aero Commander 500
Tail Number
N3836C
Operator
Palm Beach Aviation
Injuries
None
Aircraft Damage
Minor
NTSB Number
MIA93IA083
THE AIRLINE TRANSPORT PILOT-IN-COMMAND ABORTED THE TAKEOFF WHEN A PROPELLER BLADE FROM THE RIGHT ENGINE SEPARATED FROM THE RIGHT PROPELLER SYSTEM. EXAMINATION OF THE PROPELLER HUB BY THE NTSB MATERIALS LABORATORY DIVISION REVEALED THE PROPELLER HUB ARM FAILED DUE TO PREEXISTING FATIGUE CRACKING IN THE BEARING RETENTION RADIUS, FROM POLISHING AND WEAR OF THE RADIUS FROM CONTACT WITH THE SPLIT RINGS.
NTSB Probable Cause
THE PREEXISTING FATIGUE CRACKING OF THE PROPELLER HUB ARM IN THE BEARING RETENTION RADIUS DUE TO POLISHING AND WEAR OF THE RADIUS FROM CONTACT WITH THE SPLIT RINGS, RESULTING IN A PROPELLER BLADE SEPARATING FROM THE PROPELLER HUB ON THE TAKEOFF GROUND RUN, AND SUBSEQUENT ABORTED TAKEOFF.
Full Narrative
THE AIRLINE TRANSPORT PILOT-IN-COMMAND ABORTED THE TAKEOFF WHEN A PROPELLER BLADE FROM THE RIGHT ENGINE SEPARATED FROM THE RIGHT PROPELLER SYSTEM. EXAMINATION OF THE PROPELLER HUB BY THE NTSB MATERIALS LABORATORY DIVISION REVEALED THE PROPELLER HUB ARM FAILED DUE TO PREEXISTING FATIGUE CRACKING IN THE BEARING RETENTION RADIUS, FROM POLISHING AND WEAR OF THE RADIUS FROM CONTACT WITH THE SPLIT RINGS.
Flight
Event TypeIncident
Event Time14:15 EST
Nearest AirportEverglades (0nm)
Runway15
Runway Length2400 ft
Runway Width150 ft
Flight Plan FiledVFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftAero Commander 500
Tail NumberN3836C
Aircraft CategoryAir
DamageMinor
OperatorPalm Beach Aviation
Operating RulePart 135
Engines2
Engine TypeReciprocating
Engine DetailsLycoming · O-540-A2B · Reciprocating · 250
Seats7
People & Injuries
Injury SummaryNo injuries (7 uninjured)
Fatal0
Serious0
Minor0
Uninjured7
Total7
Crew 1Age 66 · First Class
Conditions
ConditionsVMC
LightDaylight
Wind150° @ 6 kt
CeilingBroken clouds 25000 ft
Temperature / Dew Point54
Altimeter30.00 inHg
Observation Time18:46
Weather SourceWFAC