SEA08CA211

NTSB accident investigation · Cessna 180 · Bluff, UT · September 26, 2008

Accident · No injuriesData collectionFinal report
Date
September 26, 2008, 08:15 local (14:15 UTC)
Place
Bluff, UT
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Taxi
Aircraft
N4646ACessna 180
Defining event
Taxi-from runway: Landing gear collapse
Weather
Visual (VMC) · Day
Status
Completed · report November 10, 2008
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20080926845929A
Case key
69010

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The pilot's encounter with the rough, uneven, and eroded condition of the airstrip.

Findings · 1

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.

Terrain: rough terrainEnvironmental issues › Physical environment · Awareness of conditionCessna 180: 7 casesAll aircraft: 442 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 he landed on the unimproved dirt airstrip and came to a full stop. He began taxiing and started to turn around when he encountered a washed out area. The pilot stated that after proceeding about another 30 feet the left main landing gear collapsed through an eroded section of the dirt airstrip, which was not visible to him. The pilot reported that the landing gear fell about 2 feet followed by the airplane going up on its nose and the propeller striking the ground; the airplane subsequently fell back on its tailwheel. The pilot reported substantial damage to the airplane as a result of the left main landing gear strut being bent and damage to the left gear attachment structure.

Factual narrative

The pilot reported that he landed on the unimproved dirt airstrip and came to a full stop. He began taxiing and started to turn around when he encountered a washed out area. The pilot stated that after proceeding about another 30 feet the left main landing gear collapsed through an eroded section of the dirt airstrip, which was not visible to him. The pilot reported that the landing gear fell about 2 feet followed by the airplane going up on its nose and the propeller striking the ground; the airplane subsequently fell back on its tailwheel. The pilot reported substantial damage to the airplane as a result of the left main landing gear strut being bent and damage to the left gear attachment structure.

Aircraft

Registration
N4646A
Reported as
Cessna 180
Category
Airplane
Serial number
32243
Engine
Continental O-470, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Scott Coatsworth
Registered owner
Scott Coatsworth
Airworthiness certificate
Standard, Normal
Departed
66V · Bluff, UT
Destination
Bluff, UT
Flight plan
Unknown
Airport
None · Dirt Airstrip, runway 18, dirt

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
57
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine sea, Single-engine land
Instrument ratings
Airplane
Medical
Class 3
Seat
Left
Flight hours
1,695 total · 1,140 in this make and model · 49 in the last 90 days · 21 in the last 30 days · 5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None

FAA reports on this event · 1

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

Other investigations on N4646A · 1

Matched to the same aircraft by N-number and date.