CHI93LA197

NTSB accident investigation · Cessna 210L · Indianola, IA · June 6, 1993

Accident · No injuriesLimited investigationFinal report
Date
June 5, 1993, 21:45 local (Jun 6, 1993, 02:45 UTC)
Place
Indianola, IA
Injuries
3 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N2267SCessna 210L
Weather
Visual (VMC) · Night/dark
Status
Completed · report July 25, 1994
Report
Approved by Office Director
FAA report
19930605016949A
Case key
9217

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

A fatigue fracture of the crankshaft.

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 - normal
Engine assembly,crankshaft - fracturedFactor
Engine assembly,crankshaft - fatigueCause
Forced landingDescent - emergency
Emergency procedure - initiatedPilot in command
Gear not extendedLanding
Gear extension - not usedPilot in command

Analysis

While in night VFR conditions the airplane suffered a total loss of engine power. The pilot conducted a forced landing into a field with the landing gear retracted. A post accident examination revealed a fractured crankshaft. Further laboratory tests failed to reveal the cause of the fatigue fracture.

Factual narrative

On June 5, 1993, at 2145 central daylight time, a Cessna 210L, N2267S, registered to Steven R. Mowery of Clarinda, Iowa, and operated by a private rated pilot, experienced a loss of engine power while in cruise flight and performed a forced landing in a farm field near Indianola, Iowa. The airplane sustained substantial damage, however the pilot and two passengers reported no injuries. The personal 14 CFR Part 91 flight was operating in night VFR conditions. No flight plan was on file. The flight departed Marion, Iowa, at 2020, with the intended destination of Clarinda, Iowa.

A post accident examination of the engine revealed that the crankshaft had fractured. Further laboratory examination was conducted by the NTSB Office of Research and Engineering. Their report is an addendum to this report. Their findings did not determine the initiating circumstances leading to the fatigue fracture of the crankshaft.

Aircraft

Registration
N2267S
Reported as
Cessna 210L
Category
Airplane
Serial number
21061211
Engine
Continental IO-520-L, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Mowery, Steven R.
Registered owner
Mowery, Steven R.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 31, 1993
Departed
C17 · Marion, IA
Destination
ICL · Clarinda, IA

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
35
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Left

Weather

Conditions
Visual (VMC) · Night/dark
Visibility
20 statute miles
Lowest ceiling
9,500 ft overcast
Temperature
63 °F, dew point 54 °F
Altimeter
30.00 inHg
Observed at
DSM, 20 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.