ANC12CA090

NTSB accident investigation · Cessna 170B · Fairbanks, AK · August 17, 2012

Accident · No injuriesData collectionFinal report
Date
August 17, 2012, 11:14 local (19:14 UTC)
Place
Fairbanks, AK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N4551CCessna 170B
Defining event
Landing-landing roll: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report December 19, 2012
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
FAA Fairbanks FSDO
FAA report
20120817018069A
Case key
84748

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 failure to maintain directional control during landing, which resulted in a ground loop and runway excursion.

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.

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 private pilot stated that during the landing roll, he looked down to turn off the carburetor heat. When he looked back up, he was on the left edge of the runway. He overcorrected with right rudder, ground looped, and departed the right side of the runway onto the grass. The airplane sustained substantial damage to the fuselage. The pilot indicated that there were no preaccident mechanical anomalies with the airplane that would have precluded normal operation.

Factual narrative

The private pilot stated that during the landing roll out, he looked down to turn off the carburetor heat. When he looked back up, he was on the left edge of the runway. He over corrected with right rudder, ground looped, and departed the right side of the runway onto the grass. The airplane sustained substantial damage to the fuselage. The pilot indicated that there were no preaccident mechanical anomalies with the airplane that would have precluded normal operation.

Aircraft

Registration
N4551C
Reported as
Cessna 170B
Category
Airplane
Serial number
25495
Airframe hours
2,106
Engine
Cont Motor C145 SERIES, 145 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · September 24, 2011
Departed
PAFA · Fairbanks, AK
Destination
PAFA · Fairbanks, AK
Airport
PAFA · Fairbanks International Airpor, runway 20, 2,900 × 75 ft, gravel

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
46
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Last flight review
April 30, 2011
Seat
Left
Flight hours
70 total · 10 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
170° at 3 knots
Visibility
10 statute miles
Lowest ceiling
6,000 ft broken
Temperature
55 °F, dew point 52 °F
Altimeter
29.85 inHg
Observed at
PAFA

Docket · 1

The files NTSB released with the investigation on October 27, 2012, on NTSB’s docket system: statements, records, photos and specialists’ reports. 754 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.