GAA18CA278

NTSB accident investigation · Cessna 170 · Zelienople, PA · May 12, 2018

Accident · No injuriesData collectionFinal report
Date
May 12, 2018, 11:00 local (15:00 UTC)
Place
Zelienople, PA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N2485DCessna 170
Defining event
Landing-landing roll: 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
20180512005279A
Case key
97246

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 the landing roll.

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
Object/animal/substance: sign/markerEnvironmental issues › Physical environment · Contributed to outcomeCessna 170B: 2 casesAll aircraft: 214 cases

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

According to the pilot in the tailwheel-equipped airplane, during the landing roll with the tailwheel on the ground, the airplane may have encountered a wind gust. The airplane exited the runway to the left, and the left main landing gear struck a taxiway sign. The airplane sustained substantial damage to the left main landing gear attachment points, the lower fuselage longeron, and the elevator. The pilot reported that the wind at the airport about the time of the accident was variable at 4 knots and that skies were clear. The nearest METAR to the accident site, located 11 miles to the west, reported that, about the time of the accident, the wind was from 270° at 8 knots with lightning in the distance to the northwest. The pilot landed the airplane on runway 35. The pilot reported that the accident could have been prevented if he had more quickly applied corrective actions, including increasing right rudder pedal pressure, using more differential braking, and increasing right aileron input. The pilot reported that there were no mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Factual narrative

According to the pilot in the tailwheel-equipped airplane, during the landing roll with the tailwheel on the ground, the airplane may have encountered a wind gust. The airplane exited the runway to the left, and the left main landing gear struck a taxiway sign. The airplane sustained substantial damage to the left main landing gear attachment points, the lower fuselage longeron, and the elevator. The pilot reported that the wind at the accident airport about the time of the accident was variable at 4 knots and skies were clear. The METAR nearest the accident site was located 11 miles to the west and reported that the wind about the time of the accident was from 270° at 8 knots, with lightning in the distance to the northwest. The pilot landed to runway 35. Per the National Transportation Safety Board, Pilot Aircraft Accident Report, in the Recommendation section, the pilot asserted that the accident could have been prevented if he had more quickly applied corrective actions including increased right rudder pedal pressure, more differential braking, and increased right aileron input. The pilot reported that there were no mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Aircraft

Registration
N2485D
Reported as
Cessna 170 (B)
Category
Airplane
Serial number
20637
Built
1952
Airframe hours
3,308.9
Engine
Continental C145, 145 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Draggin Tail Pilots LLC.
Registered owner
Draggin Tail Pilots LLC.
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · January 28, 2018
Departed
PJC · Zelienople, PA
Destination
PJC · Zelienople, PA
Airport
PJC · Zelienople Muni, runway 35, 4,933 × 75 ft, asphalt
Equipment
Stall warning system, Handheld GPS

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
65
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Last flight review
February 4, 2017
Seat
Left
Flight hours
226.6 total · 42 in this make and model · 150.6 as pilot in command · 14.6 in the last 90 days · 2.5 in the last 30 days · 1.3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
270° at 8 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
72 °F, dew point 55 °F
Altimeter
30.02 inHg
Observed at
KBVI, 11 nm away

Docket · 2

The files NTSB released with the investigation on October 29, 2018, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.4 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.