- Date
- October 22, 2019, 12:00 local (17:00 UTC)
- Place
- Lamesa, TX
- Injuries
- 1 serious, 1 uninjured; on the ground: 1 serious
- Damage
- Minor damage
- Phase of flight
- Maneuvering
- Aircraft
- N9143FAir Tractor AT 502
- Defining event
- Maneuvering-low-alt flying: Miscellaneous/other
- Weather
- Visual (VMC) · Day
- Status
- Completed
- Report
- Approved by Office Director
- Investigation class
- Class 3
- NTSB office
- Central Region
- Parties
- Federal Aviation Administration, Lubbock FSDO
- FAA report
- 20191022014409A
- Case key
- 100477
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 improper decision to maneuver at a low altitude and in close proximity to a wind turbine undergoing maintenance, which resulted in a collision with a tagline rope being held by a worker on the ground and serious injury to the worker.
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.
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 returning from a local aerial application flight when he decided to fly at low altitude past a wind turbine that he believed his friend was working on. The airplane's right wing collided with a tagline rope that was attached to one of the wind turbine blades and being held by a worker on the ground. The worker was thrown about 20 ft and sustained several fractured vertebrae and a broken leg. The airplane's right wing sustained minor damage; however, the pilot was able to make a normal landing at his intended destination without incident.
Factual narrative
On October 22, 2019, about 1200 central daylight time, an Air Tractor AT-502B airplane, N9143F, collided with a tagline rope while maneuvering near a wind turbine located near Lamesa, Texas. The commercial pilot was not injured, but a worker on the ground was seriously injured. The airplane sustained minor damage. The airplane was operated by Plains Aerial Applicators Inc, Olton, Texas, as a Title 14 Code of Federal Regulations (CFR) Part 137 aerial application flight. Day visual meteorological conditions prevailed, and no flight plan was filed for the local flight that departed Lamesa Municipal Airport (LUV), Lamesa, Texas, at 1108. According to the pilot, the takeoff and aerial application portion of the flight was uneventful. The pilot reported that as he flew back toward LUV he sent a text message to a friend who was working on a wind turbine located along US Route 180 and about 10 miles east of LUV. The pilot stated that he intentionally flew at a low altitude past the wind turbine that he believed his friend was working on. The airplane's right wing collided with a tagline rope that was attached to one of the wind turbine blades and being held by a worker on the ground. Following the collision, the pilot was able to make a normal landing at LUV. The airplane sustained minor damage to the right wing leading and trailing edges. The pilot reported that he later found out that his friend had been working on a different wind turbine in the same area. According to the wind turbine company, the technician on the ground was holding onto a 500 ft long tagline rope that was attached to a wind turbine blade about 403 ft above the ground. The technician was standing about 294 ft from the base of the wind turbine when the airplane collided with the tagline rope. The technician was thrown about 20 ft and sustained several fractured vertebrae and a broken leg.
Aircraft
- Registration
- N9143F
- Reported as
- Air Tractor AT 502 (B)
- Category
- Airplane
- Serial number
- 502-0197
- Built
- 1992
- Airframe hours
- 11,086
- Engine
- Pratt & Whitney PT6A, 680 horsepower, turbo prop
- Damage
- Minor damage
- Flight
- Aerial application · Part 137
- Operator
- Plains Aerial Applicators Inc., doing business as Plains Aerial Applicators Inc.
- Registered owner
- Wilmington Trust Co Trustee
- Airworthiness certificate
- Special, Restricted (Special)
- Last inspection
- 100 hour · September 7, 2019 · 80 hours before
- Departed
- LUV · Lamesa, TX
- Destination
- LUV · Lamesa, TX
- 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
- 43
- Injuries
- None
- Certificate
- Commercial
- Airplane ratings
- Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2, With waivers/limitations
- Last flight review
- February 14, 2018
- Seat
- Single
- Restraint
- 5-point
- Flight hours
- 1,680 total · 400 in this make and model · 1,450 as pilot in command · 78 in the last 90 days · 50 in the last 30 days · 7 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 130° at 8 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- 11,000 ft overcast
- Temperature
- 63 °F, dew point 27 °F
- Altimeter
- 30.23 inHg
- Observed at
- LUV, 9 nm away
Docket · 3
The files NTSB released with the investigation on October 28, 2019, on NTSB’s docket system: statements, records, photos and specialists’ reports. 601 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.