ANC11CA050

NTSB accident investigation · Cessna 180 · Big Lake, AK · June 17, 2011

Accident · No injuriesData collectionFinal report
Date
June 16, 2011, 20:30 local (Jun 17, 2011, 04:30 UTC)
Place
Big Lake, AK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N3934BCessna 180
Defining event
Landing-flare/touchdown: Landing area undershoot
Weather
Visual (VMC) · Day
Status
Completed · report September 19, 2011
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
FAA
FAA report
20110616011079A
Case key
80802

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 failure to maintain the proper glide path during his landing approach, resulting in an undershoot and collision with terrain.

Findings · 3

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: descent/approach/glide pathAircraft › Aircraft oper/perf/capability · Not attained/maintainedCessna 180: 2 casesAll aircraft: 809 casesProbable cause
Personnel issuesPersonnel issues › Task performance · PilotCessna 180: 1 caseAll aircraft: 137 casesProbable cause
Wind: downdraftEnvironmental issues › Conditions/weather/phenomena · Contributed to outcomeCessna 180: 2 casesAll aircraft: 178 cases

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 was returning to his private airstrip after practicing landings at a local airport. He reported the approach to his airstrip was over water, and as he approached the transition from over water to over land, he encountered a downdraft. The airplane touched down short of the landing area, and nosed over, resulting in substantial damage to the vertical stabilizer and rudder. The pilot stated there were no preaccident mechanical problems with the airplane.

Factual narrative

The private pilot was returning to his private airstrip after practicing landings at a local airport. He said the approach to his airstrip is over water, and as he approached the transition from over water to over land, he encountered a downdraft. The airplane touched down short of the landing area, and nosed over, resulting in substantial damage to the vertical stabilizer and rudder. The pilot said there were no preaccident mechanical problems with the airplane.

Aircraft

Registration
N3934B
Reported as
Cessna 180
Category
Airplane
Serial number
30148
Airframe hours
4,913
Engine
Cont Motor O-470 SERIES, 230 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Godin Chester A
Registered owner
Godin Chester A
Airworthiness certificate
Standard, Normal
Last inspection
Annual · June 28, 2010
Departed
Big Lake, AK
Destination
Big Lake, AK

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
71
Injuries
None
Certificate
Private
Airplane ratings
Single-engine sea, Single-engine land
Medical
Class 3, With waivers/limitations
Last flight review
June 21, 2009
Seat
Left
Flight hours
5,500 total · 1,092 in this make and model · 5,500 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Visibility
10 statute miles
Lowest ceiling
None
Temperature
64 °F

Docket · 1

The files NTSB released with the investigation on July 7, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 148 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.