GAA18CA339

NTSB accident investigation · Cessna 170 · Benson, AZ · June 10, 2018

Accident · No injuriesData collectionFinal report
Date
June 10, 2018, 09:45 local (16:45 UTC)
Place
Benson, AZ
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N170WCessna 170
Defining event
Landing: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report March 18, 2019
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
FAA report
20180610024249A
Case key
97456

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 during landing.

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 170B: 91 casesAll aircraft: 9,295 casesProbable cause
Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedCessna 170B: 74 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, during the landing roll, the tailwheel-equipped airplane veered left and began to bounce. He applied right rudder correction, which quickly turned the airplane right toward the centerline, and he then applied left rudder to realign with the runway heading. He increased the engine power setting to full to perform a go-around, but the airplane, during its third bounce, ground looped to the left. The right wing impacted the ground, and the airplane came to rest on its right side with the wing at a 90° angle. 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. The pilot reported that the automated weather observation system located on the airport reported that, about 15 minutes before the accident, the wind was light and variable at 2 knots, gusting to 5 knots. The airplane landed on runway 28.

Factual narrative

The pilot reported that, during the landing roll, the tailwheel-equipped airplane veered to the left and began to bounce. He applied right rudder correction, which quickly turned the airplane right towards centerline, and then applied left rudder to realign with runway heading. He increased the engine power setting to full to perform a go around, but the airplane, on its third bounce, ground looped to the left. The right wing impacted the ground and the airplane came to rest on its right side with the wing at a 90° angle. 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. The pilot reported that the automated weather observation system located on the airport reported that, about 15 minutes before the accident, the wind was light and variable at 2 knots, gusting to 5 knots. The airplane landed on runway 28.

Aircraft

Registration
N170W
Reported as
Cessna 170 (B)
Category
Airplane
Serial number
25596
Built
1953
Airframe hours
2,856.6
Engine
Cont Motor O-300A, 145 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · June 4, 2018
Departed
E95 · Benson, AZ
Destination
E95 · Benson, AZ
Airport
E95 · Benson Muni, runway 28, 4,002 × 75 ft, asphalt
Equipment
Stall warning system

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
40
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
BasicMed, Without waivers/limitations
Last flight review
May 1, 2016
Seat
Left
Flight hours
137 total · 7 in this make and model · 90 as pilot in command · 7 in the last 90 days · 7 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
260° at 14 knots, gusting 20
Visibility
10 statute miles
Lowest ceiling
None
Temperature
95 °F, dew point -8 °F
Altimeter
30.01 inHg
Observed at
KALK, 24 nm away

Docket · 2

The files NTSB released with the investigation on October 15, 2018, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.0 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.