CEN10CA578

NTSB accident investigation · Cessna 172B · Oconomowoc, WI · September 29, 2010

Accident · No injuriesData collectionFinal report
Date
September 29, 2010, 15:50 local (20:50 UTC)
Place
Oconomowoc, WI
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N7560XCessna 172B
Weather
Visual (VMC) · Day
Status
Completed · report March 16, 2011
Report
Approved by Office Director
NTSB office
Central Region
Parties
Federal Aviation Administration
FAA report
20100929046929A
Case key
77454

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

The pilot's selection of unsuitable terrain for landing the float-equipped airplane on a turf runway.

Findings · 2

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Performance/control parameters: landing flareAircraft › Aircraft oper/perf/capability · Incorrect use/operationCessna 172B: 3 casesAll aircraft: 1,285 casesProbable cause
Action: incorrect action performancePersonnel issues › Action/decision · PilotCessna 172B: 1 caseAll aircraft: 1,386 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The pilot purchased the float-equipped airplane on the day of the accident. During landing on the turf runway, one of the airplane's floats dug into the terrain and the airplane nosed over. The pilot reported no preimpact mechanical problems with the airplane. Examination of the airplane revealed that the vertical stabilizer and rudder were bent.

Factual narrative

The pilot purchased the float-equipped airplane on the day of the accident. During landing on the turf runway, one of the airplane's floats dug into the terrain and the airplane nosed over. The pilot reported no mechanical problems with the airplane prior to the accident. Examination of the airplane revealed the vertical stabilizer and rudder were bent.

Aircraft

Registration
N7560X
Reported as
Cessna 172B
Category
Airplane
Serial number
17248060
Airframe hours
3,339
Engine
Cont Motor IO-360-KB, 145 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · April 23, 2010
Departed
Lake Hudson, MI
Destination
OWI8 · Oconomowoc, WI
Airport
OWI8 · Oconomowoc Airport, runway 18, 1,400 × 200 ft, grass/turf

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
74
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Class 3, With waivers/limitations
Last flight review
May 25, 2010
Seat
Left
Flight hours
8,250 total · 6 in this make and model · 25 in the last 90 days · 8 in the last 30 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
220° at 4 knots
Visibility
30 statute miles
Lowest ceiling
None
Temperature
73 °F, dew point 39 °F
Altimeter
29.89 inHg

Docket · 1

The files NTSB released with the investigation on October 12, 2010, on NTSB’s docket system: statements, records, photos and specialists’ reports. 443 KB in all.

FAA reports on this event · 1

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