CEN12CA590

NTSB accident investigation · Cessna 180J · Wausau, WI · August 14, 2012

Accident · No injuriesData collectionFinal report
Date
August 14, 2012, 11:00 local (16:00 UTC)
Place
Wausau, WI
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N52187Cessna 180J
Defining event
Landing-landing roll: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report July 23, 2013
Report
Approved by Office Director
NTSB office
Central Region
Parties
FSDO Milwaukee
FAA report
20120814016989A
Case key
84857

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 loss of control during landing roll out, resulting in a runway excursion. Contributing to the accident was an unexpected crosswind wind gust.

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.

Action: delayed actionPersonnel issues › Action/decision · PilotCessna 180J: 4 casesAll aircraft: 894 casesProbable cause
Wind: crosswindEnvironmental issues › Conditions/weather/phenomena · Contributed to outcomeCessna 180J: 8 casesAll aircraft: 1,008 casesProbable cause
Wind: gustsEnvironmental issues › Conditions/weather/phenomena · Contributed to outcomeCessna 180J: 5 casesAll aircraft: 1,199 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

After an uneventful 30-minute flight, the pilot set up the tail wheel equipped airplane for a full stop traffic pattern approach and landing. The pilot stated that he touched down normally on the dry asphalt runway heading 050 degrees. Nearing the end of roll out, a "huge" unexpected gust of wind (about 20-25 knots out of the west) lifted the left wing off the ground and pushed the tail to the right, causing the nose of airplane to face to the left. The pilot attempted to correct, but did not have enough rudder authority. The airplane then skidded to the left and went slightly off the left side of the runway. The right wing dug into dirt, resulting in structural damage to the outboard section of right wing. The pilot stated that he had checked the ATIS information just prior to landing, and the reported wind was 050 degrees at 10 knots with no gusts. Also, he stated that wind "T" indicated that the wind was from about 050 degrees. The pilot noted that he was very surprised when he encountered the crosswind gust on roll out. Shortly after the accident, the pilot demonstrated proficiency in crosswind landings during an FAA check flight.

Factual narrative

After an uneventful 30-minute flight, the pilot set up the tail wheel equipped airplane for a full stop traffic pattern approach and landing. The pilot stated that he touched down normally on the dry asphalt runway heading 050 degrees. Nearing the end of roll out, a "huge" unexpected gust of wind (about 20-25 knots out of the west) lifted the left wing off the ground and pushed the tail to the right, causing the nose of airplane to face to the left. The pilot attempted to correct, but did not have enough rudder authority. The airplane then skidded to the left and went slightly off the left side of the runway. The right wing dug into dirt, resulting in structural damage to the outboard section of the right wing. The pilot stated that he had checked the ATIS information just prior to landing, and the reported wind was 050 degrees at 10 knots with no gusts. Also, he stated that wind "T" indicated that the wind was from about 050 degrees. The pilot noted that he was very surprised when he encountered the crosswind gust on roll out. Shortly after the accident, the pilot demonstrated proficiency in crosswind landings during an FAA check flight.

Aircraft

Registration
N52187
Reported as
Cessna 180J
Category
Airplane
Serial number
18052545
Airframe hours
2,281
Engine
Cont Motor O-470 SERIES, 230 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Monk Robert William
Registered owner
Monk Robert William
Airworthiness certificate
Standard, Normal
Last inspection
Annual · July 14, 2012 · 10 hours before
Departed
WI36 · Lake Tomahawk, WI
Destination
AUW · Wausau, WI
Airport
AUW · Wausau Downtown Airport, runway 04, 3,041 × 100 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
69
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Last flight review
August 6, 2012
Seat
Left
Flight hours
365 total · 100 in this make and model · 30 in the last 90 days · 10 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
50° at 10 knots, gusting 20
Visibility
10 statute miles
Lowest ceiling
None
Temperature
73 °F, dew point 48 °F
Altimeter
29.95 inHg

Docket · 1

The files NTSB released with the investigation on June 26, 2013, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.6 MB 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.