CEN13LA323

NTSB accident investigation · Rockwell International S-2R · Hamlin, TX · June 1, 2013

Accident · Minor injuriesLimited investigationFinal report
Date
June 1, 2013, 10:30 local (15:30 UTC)
Place
Hamlin, TX
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N4946XRockwell International S-2R
Defining event
Landing-flare/touchdown: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report February 10, 2014
Report
Approved by Office Director
NTSB office
Central Region
FAA report
20130601009069A
Case key
87109

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 decision to land the airplane with a crosswind that exceeded the airplane's capabilities.

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.

Wind: crosswindEnvironmental issues › Conditions/weather/phenomena · Effect on operationRockwell International S-2R: 2 casesAll aircraft: 1,008 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

During the landing, the airplane encountered a strong, gusting right crosswind. The pilot attempted to perform a go-around; however, the airplane ground-looped. The prevailing wind resulted in a right quartering tailwind with a gusting crosswind component of 23 knots. The maximum crosswind velocity for the accident airplane was 15 miles per hour; therefore, the calculated crosswind component exceeded the capability of the airplane. The pilot should not have landed with a crosswind that exceeded the airplane's capabilities. The pilot reported no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Factual narrative

On June 1, 2013, about 1030 central daylight time, a Rockwell International S-2R airplane, N4946X, impacted terrain while landing at the Hamlin Municipal Airport (14F), Hamlin, Texas. The commercial pilot sustained minor injuries. The airplane sustained substantial damage. The airplane was registered to and operated by Tri-County Sprayers, Inc., under the provisions of 14 Code of Federal Regulations Part 137 as an aerial application flight. Visual meteorological conditions prevailed for the flight, which was operated without a flight plan. The flight originated from 14F at 0925. According to the pilot, during the landing to runway 34 (3,200 feet by 50 feet, asphalt), the airplane encountered a "strong and gusty" crosswind from the right. The pilot attempted to perform a go around; however, the airplane groundlooped resulting in substantial damage to both wings, the empennage, and the firewall. The pilot reported that the wind was 090 degrees at 23 knots, gusting to 28 knots. The closest official weather station, located 28 miles to the southwest of 14F, recorded the wind as 100 degrees at 12 knots, gusting to 18 knots. The maximum crosswind was calculated to be 23 knots based upon the reported winds from the pilot. The pilot reported no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Aircraft

Registration
N4946X
Reported as
Rockwell International S-2R
Category
Airplane
Serial number
5007R
Airframe hours
11,956
Engine
Honeywell TPE-331-1-101, 600 horsepower, turbo prop
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Tri County Sprayers Inc
Registered owner
Tri County Sprayers Inc
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · April 27, 2013
Departed
14F · Hamlin, TX
Destination
14F · Hamlin, TX
Airport
14F · Hamlin Municipal Airport, runway 34, 3,200 × 50 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
49
Injuries
Minor
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Without waivers/limitations
Last flight review
January 3, 2013
Seat
Single
Restraint
4-point
Flight hours
738 total · 318 in this make and model · 725 as pilot in command · 30 in the last 90 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
90° at 23 knots, gusting 18
Visibility
10 statute miles
Lowest ceiling
5,000 ft overcast
Temperature
79 °F, dew point 63 °F
Altimeter
29.95 inHg
Observed at
SWW, 28 nm away

Docket · 1

The files NTSB released with the investigation on February 4, 2014, on NTSB’s docket system: statements, records, photos and specialists’ reports. 310 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.

Other investigations on N4946X · 2

Matched to the same aircraft by N-number and date.