MIA93IA083

NTSB incident investigation · Aero Commander 500 · Everglades City, FL · March 7, 1993

Incident · No injuriesIncident investigationFinal report
Date
March 7, 1993, 14:15 local (19:15 UTC)
Place
Everglades City, FL
Injuries
7 uninjured
Damage
Minor damage
Phase of flight
Takeoff
Aircraft
N3836CAero Commander 500
Weather
Visual (VMC) · Day
Status
Completed · report June 30, 1994
Report
Approved by Office Director
FAA report
19930307014919I
Case key
33183

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the incident.

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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.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Airframe/component/system failure/malfunctionTakeoff - aborted
Propeller system/accessories,hub - failure,total
Propeller system/accessories,hub - fatigueCause

Analysis

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.

Aircraft

Registration
N3836C
Reported as
Aero Commander 500
Category
Airplane
Serial number
500-791
Airframe hours
4,861
Engine
Lycoming O-540-A2B, 250 horsepower, reciprocating
Damage
Minor damage
Flight
Part 135
Operator
Palm Beach Aviation
Registered owner
Palm Beach Aviation
Airworthiness certificate
Standard, Normal
Last inspection
AAIP · March 3, 1993 · 30 hours before
Departed
X01
Destination
PBI · W. Palm Beach, FL
Flight plan
VFR
Airport
XO1 · Everglades, runway 15, 2,400 × 150 ft, asphalt

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
66
Certificate
Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
8,760 total · 2,333 in this make and model · 8,560 as pilot in command · 41 in the last 90 days · 19 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
150° at 6 knots
Lowest ceiling
25,000 ft broken
Temperature
79 °F, dew point 54 °F
Altimeter
30.00 inHg
Observed at
FMY, 25 nm away

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.

Other investigations on N3836C · 1

Matched to the same aircraft by N-number and date.