MIA93FA109

NTSB accident investigation · Cessna TU206D · Culebra, PR · April 25, 1993

Accident · FatalField investigationFinal report
Date
April 25, 1993, 09:40 local (13:40 UTC)
Place
Culebra, PR
Injuries
1 fatal, 1 minor
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N72158Cessna TU206D
Weather
Visual (VMC) · Day
Status
Completed · report May 10, 1994
Report
Approved by Office Director
FAA report
19930425010449A
Case key
33179

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

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Probable cause

Fatigue failure of the engine crankshaft that originated from a heat check crack in the journal, adjacent to the #2 main journal forward fillet.

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.

Loss of engine power(total) - mech failure/malfCruise
Engine assembly,crankshaft - fatigueCause
Forced landingDescent - emergency
DitchingLanding
Terrain condition - water

Analysis

During flight at about 2000 feet over water, a partial loss of engine power occurred, followed by a total loss of power. The pilot attempted an engine restart with negative results and ditched at the mouth of a bay in ocean waters. He was fatally injured, but the passenger sustained only minor injuries. The aircraft was recovered, and an examination of the engine revealed the crankshaft had failed from fatigue cracking. Fatigue had initiated at a heat check crack in the journal at a position about 0.2 inch aft of the #2 main journal forward fillet & propagated through the adjacent #4 cheek. There was evidence of galling of the #2 main journal by contact with the associated bearing, which resulted in heat checks.

Aircraft

Registration
N72158
Reported as
Cessna TU206D
Category
Airplane
Serial number
U206-1301
Airframe hours
3,719
Engine
Continental TSIO-520-C, 285 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Operator
Florez, Eusebio
Registered owner
Florez, Eusebio
Airworthiness certificate
Standard, Normal
Last inspection
Annual · December 19, 1992 · 22 hours before
Departed
TUPJ · Tortola, OF
Destination
SIG · Isle Grande, PR

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
39
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Toxicology
Performed
Flight hours
324 total · 324 in this make and model · 291 as pilot in command · 10 in the last 90 days · 8 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
110° at 11 knots
Visibility
30 statute miles
Lowest ceiling
25,000 ft overcast
Temperature
84 °F, dew point 70 °F
Altimeter
30.00 inHg
Observed at
TIST, 16 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.