WPR10CA301

NTSB accident investigation · Cessna 180 · Big Creek, ID · June 21, 2010

Accident · No injuriesData collectionFinal report
Date
June 21, 2010, 09:00 local (15:00 UTC)
Place
Big Creek, ID
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Taxi
Aircraft
N2350CCessna 180
Defining event
Taxi: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report October 21, 2010
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
FAA
Case key
76385

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 directional control while taxiing at an unfamiliar airstrip.

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.

Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotCessna 180: 65 casesAll aircraft: 9,295 casesProbable cause
Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedCessna 180: 64 casesAll aircraft: 3,958 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 reported that while taxiing a tail wheel-equipped airplane down a slope the airplane began to slide sideways and the empennage turned downslope. Despite the pilot’s control inputs, the empennage reached approximately a 90-degree angle to the desired direction and the airplane tipped to the left. During the accident sequence, damage was incurred to the left wing and left horizontal stabilizer. The pilot reported no mechanical failures or malfunctions with the airframe or engine prior to the accident. The pilot stated the accident could have been prevented by obtaining more knowledge concerning the airstrip.

Factual narrative

The pilot reported that while taxiing a tailwheel-equipped airplane down a slope the airplane began to slide sideways and the empennage turned downslope. Despite the pilot’s control inputs, the empennage reached approximately a 90-degree angle to the desired direction and the airplane tipped to the left. During the accident sequence, damage was incurred to the left wing and left horizontal stabilizer. The pilot reported no mechanical failures or malfunctions with the airframe or engine prior to the accident. The pilot stated the accident could have been prevented by obtaining more knowledge concerning the airstrip.

Aircraft

Registration
N2350C
Reported as
Cessna 180
Category
Airplane
Serial number
30650
Airframe hours
4,681
Engine
Cont Motor O-470 SERIES, 230 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Keating John C
Registered owner
Keating John C
Airworthiness certificate
Standard, Normal
Last inspection
Annual · November 18, 2009 · 30 hours before
Departed
I08 · Big Creek, ID
Destination
N/A · Big Creek, ID
Airport
N/A · Mile Hi, runway 19, 600 × 30 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
34
Injuries
None
Certificates
Airline transport, Flight engineer, Flight instructor
Airplane ratings
Multi-engine land, Single-engine sea, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Without waivers/limitations
Last flight review
April 3, 2010
Seat
Left
Flight hours
9,775 total · 1,200 in this make and model · 3,656 as pilot in command · 175 in the last 90 days · 90 in the last 30 days · 5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Temperature
50 °F, dew point 45 °F
Altimeter
30.11 inHg
Observed at
KSMN, 54 nm away

Docket · 1

The files NTSB released with the investigation on July 14, 2010, on NTSB’s docket system: statements, records, photos and specialists’ reports. 561 KB in all.