GAA19CA517

NTSB accident investigation · Cessna 180 · Arlington, WA · August 20, 2019

Accident · Minor injuriesData collectionFinal report
Date
August 20, 2019, 09:50 local (16:50 UTC)
Place
Arlington, WA
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N180TBCessna 180
Defining event
Takeoff: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report March 17, 2020
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
FAA report
20190820015429A
Case key
100135

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 properly secure the seat before takeoff, which resulted in it sliding back during takeoff and rendering him unable to reach the rudder pedals and throttle lever, a subsequent runway excursion, ground loop, and impact with a berm.

Findings · 4

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.

Fuselage: seat/cargo attach fittingAircraft › Aircraft structures · Incorrect use/operationCessna 180F: 1 caseAll aircraft: 27 casesProbable cause
Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedCessna 180F: 4 casesAll aircraft: 3,958 casesProbable cause
Use of equip/info: use of equip/systemPersonnel issues › Task performance · PilotCessna 180F: 1 caseAll aircraft: 1,391 casesProbable cause
Terrain: sloped/uneven terrainEnvironmental issues › Physical environment · Effect on operationCessna 180F: 1 caseAll aircraft: 270 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, before takeoff, he adjusted his seat. During takeoff, his seat slid back, and he was not able to reach the rudder pedals or throttle lever. The airplane accelerated, veered left, exited the runway to the left, ground looped, and impacted a berm. The airplane sustained substantial damage to the right wing. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

Factual narrative

The pilot of the tailwheel equipped airplane reported that, prior to takeoff, he adjusted his seat. During takeoff, his seat slid back and he was not able to reach the rudder pedals or throttle lever. The airplane accelerated, veered left, exited the runway to the left, ground looped, and impacted a berm. The airplane sustained substantial damage to the right wing. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

Aircraft

Registration
N180TB
Reported as
Cessna 180 (F)
Category
Airplane
Serial number
18051273
Built
1963
Airframe hours
3,512.2
Engine
Continental Pponk conversation O-47050, 235 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Departed
AWO · Arlington, WA
Destination
W10 · Langley, WA
Airport
AWO · Arlington Muni, runway 34, 5,332 × 100 ft, asphalt
Equipment
ADS-B

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
60
Injuries
Minor
Certificates
Flight engineer, Flight instructor, Airline transport
Airplane ratings
Single-engine sea, Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Waiver time limited special
Seat
Left
Restraint
4-point
Flight hours
28,246 total · 1,706 in this make and model · 20,942 as pilot in command · 240 in the last 90 days · 105 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None
Temperature
66 °F, dew point 55 °F
Altimeter
29.95 inHg
Observed at
KAWO

Docket · 2

The files NTSB released with the investigation on January 21, 2020, on NTSB’s docket system: statements, records, photos and specialists’ reports. 643 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.