CEN12LA386

NTSB accident investigation · Cessna 140A · Walnut Ridge, AR · June 21, 2012

Accident · Minor injuriesLimited investigationFinal report
Date
June 21, 2012, 13:00 local (18:00 UTC)
Place
Walnut Ridge, AR
Injuries
1 minor, 1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N9497ACessna 140A
Defining event
Landing-flare/touchdown: Abnormal runway contact
Weather
Visual (VMC) · Day
Status
Completed · report September 13, 2012
Report
Approved by Office Director
NTSB office
Central Region
Parties
Federal Aviation Administration - Little Rock FSDO
FAA report
20120621012069A
Case key
84050

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 aircraft control after encountering a whirlwind or dust-devil during the landing flare.

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 140A: 12 casesAll aircraft: 9,295 casesProbable cause
Wind: dust devil/whirlwindEnvironmental issues › Conditions/weather/phenomena · Ability to respond/compensateCessna 140A: 2 casesAll aircraft: 38 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 was practicing touch-and-go landings when the accident occurred. The pilot stated that the tailwheel-equipped airplane encountered an "abrupt gust of wind" during the landing flare that lifted the tail, placing the airplane into a nose-low attitude. The airplane subsequently impacted the runway and nosed over onto its back. The pilot noted that there were no preimpact mechanical malfunctions or failures that would have precluded normal operation of the airplane. The pilot reported that during the accident flight he saw several "dust devils" or “whirlwinds” in the agricultural fields surrounding the airport and attributed the wind gust encountered during the landing flare to one of those events. A postaccident review of the available wind data revealed the prevailing wind was from the south at 11 knots, which resulted in a left quartering crosswind of about 7 knots.

Factual narrative

On June 21, 2012, at 1300 central daylight time, a Cessna model 140A airplane, N9497A, was substantially damaged while landing at Walnut Ridge Regional Airport (KARG), Walnut Ridge, Arkansas. The commercial pilot sustained minor injuries. His passenger was not injured. The airplane was registered to and operated by a private individual under the provisions of 14 Code of Federal Regulations Part 91. Day visual meteorological conditions prevailed for the personal flight, which was operated without a flight plan. The flight departed the pilot's private airstrip near Walnut Ridge, Arkansas, about 1200. The pilot reported that he was practicing touch-and-go landings on runway 22 (6,001 feet by 150 feet, asphalt) when the accident occurred. He noted that he had completed 4 uneventful landings before the accident landing. The pilot stated that the tailwheel-equipped airplane encountered an "abrupt gust of wind" during the landing flare that lifted the tail, placing the airplane into a nose-low attitude. The airplane subsequently impacted the runway and nosed over onto its back. The engine firewall, vertical stabilizer, and rudder were substantially damaged during the accident. The pilot noted that there were no preimpact mechanical malfunctions or failures that would have precluded normal operation of the airplane. The pilot reported that during the accident flight he saw several "dust devils" in the agricultural fields surrounding the airport and attributed the wind gust encountered during the landing flare to one of these whirlwinds. At 1255, the airport's automated surface observing system reported the following weather conditions: wind 180 degrees at 11 knots; clear skies; visibility 10 miles; temperature 31 degrees Celsius; dew point 18 degrees Celsius; altimeter setting 29.97 inches of mercury. On June 22, 2012, an inspector with the Federal Aviation Administration conducted a postaccident examination of the airplane. The examination confirmed flight control continuity from the cockpit controls to the respective control surfaces and tailwheel assembly. Additionally, no mechanical anomalies were noted during a function test of the brake system. The postaccident examination did not reveal any preimpact mechanical malfunctions or failures that would have precluded normal operation of the airplane.

Aircraft

Registration
N9497A
Reported as
Cessna 140A
Category
Airplane
Serial number
15318
Airframe hours
4,084
Engine
Lycoming O-235-C1, 115 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · December 29, 2011
Departed
PVT · Walnut Ridge, AR
Destination
KARG · Walnut Ridge, AR
Airport
KARG · Walnut Ridge Regional Airport, runway 22, 6,001 × 150 ft, asphalt

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
55
Injuries
Minor
Certificate
Commercial
Airplane ratings
Single-engine land, Single-engine sea, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
July 23, 2011
Seat
Left
Flight hours
10,500 total · 40 in this make and model · 10,500 as pilot in command · 30 in the last 90 days · 30 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
180° at 11 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
88 °F, dew point 64 °F
Altimeter
29.96 inHg
Observed at
KARG

Docket · 7

The files NTSB released with the investigation on July 6, 2012, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.4 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.