WPR12CA037

NTSB accident investigation · Cessna 180H · Snohomish, WA · November 11, 2011

Accident · No injuriesData collectionFinal report
Date
November 11, 2011, 15:00 local (23:00 UTC)
Place
Snohomish, WA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N180LVCessna 180H
Defining event
Landing-landing roll: Runway excursion
Weather
Visual (VMC) · Day
Status
Completed · report February 6, 2012
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20111111025579A
Case key
82308

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 decision to land in a high, gusting, variable wind.

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.

Wind: variable windEnvironmental issues › Conditions/weather/phenomena · Response/compensationCessna 180H: 1 caseAll aircraft: 113 cases
Wind: gustsEnvironmental issues › Conditions/weather/phenomena · Response/compensationCessna 180H: 5 casesAll aircraft: 1,199 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 reported that, while landing on a grass portion of the runway, the wind shifted from a 90-degree right crosswind to a tailwind. During the landing roll, he was unable to stop before the end of the 2,430-foot-long runway. The airplane continued beyond the end of the runway and impacted a fence, which resulted in substantial damage to the left horizontal stabilizer, left elevator, and left wing. The pilot stated that, at the time of the accident, the wind was variable, gusting to 38 knots. The pilot reported no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Factual narrative

The pilot reported that while landing on a grass portion of runway 15, the wind shifted from a crosswind to a tailwind. During the landing roll, he was unable to stop before the end of the 2,430-foot-long runway. The airplane continued beyond the end of the runway and impacted a fence, which resulted in structure damage to the left horizontal stabilizer, left elevator, and left wing. The pilot stated that at the time of the accident, the wind was variable from 240 degrees at 25 knots gusting to 38 knots. The pilot reported no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Aircraft

Registration
N180LV
Reported as
Cessna 180H
Category
Airplane
Serial number
18051993
Airframe hours
3,795
Engine
Cont Motor O-470 SERIES, 230 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
James Unger
Registered owner
Copper Mountain Aviation LLC
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · June 6, 2011 · 11 hours before
Departed
S43 · Snohomish, WA
Destination
S43 · Snohomish, WA
Airport
S43 · Harvey Field, runway 15R, 2,430 × 100 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
59
Injuries
None
Certificate
Private
Airplane ratings
Single-engine sea, Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
September 1, 2011
Seat
Left
Flight hours
3,302 total · 250 in this make and model · 76 in the last 90 days · 25 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
240° at 25 knots, gusting 38
Visibility
3 statute miles
Lowest ceiling
1,400 ft overcast
Temperature
39 °F, dew point 39 °F
Altimeter
29.88 inHg

Docket · 1

The files NTSB released with the investigation on December 16, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 755 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.