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Accidents · NTSB WPR20CA092 · Final report

Bell OH 58A accident near Colexico, California, February 19, 2020

On February 19, 2020 at about 3:15 am local time, a 1970 Bell OH 58A (helicopter), registered N288NS, was substantially damaged in an accident during maneuvering (low-alt flying) near Colexico, California. It was an aerial application (crop spraying) flight under agricultural flying rules (Part 137). No one was hurt; 1 person was on board or involved. The weather was visual conditions (good weather).

The NTSB's probable cause their words, unchanged

The pilot's failure to arrest the descent rate while maneuvering at low altitude, which resulted in impact with terrain.

Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.

What the record shows

Date
February 19, 2020 · about 3:15 am local time
Place
Colexico, California · map
Type
Accident
Injuries
No one was hurt; 1 person was on board or involved.
Weather
visual conditions (good weather)
Aircraft
Bell OH 58A No Series, built 1970 · all OH 58As on the register
Registration
N288NS · registry record · serial 70-15288
Damage
Substantial damage
Flight
Aerial application (crop spraying) flight · agricultural flying rules (Part 137)

The NTSB's narrative final · quoted from the NTSB record

The pilot reported that, during an agricultural application flight, he sprayed a row on the field and then climbed the helicopter to avoid wires on the south side of the field. He then turned the helicopter right and began to descend back to the field. After he cleared the wires, he entered the field's spray line and began raising the collective and noticed that the torque gauge was responding; however, he failed to arrest the descent, and the helicopter subsequently impacted terrain and came to rest on its right side. The helicopter sustained substantial damage to the fuselage. The pilot reported that there were no preaccident mechanical failures or malfunctions with the helicopter that would have precluded normal operation.

The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.

The factual record from the NTSB's investigation tables, in plain English

What happened, in order

  1. Miscellaneous/other during maneuvering (low-alt flying)
  2. Low altitude operation/event during maneuvering (low-alt flying) defining event
  3. Collision with terrain or object (not controlled flight into terrain) during uncontrolled descent
  4. Roll over during post (impact)

The NTSB's findings

  • cause Personnel issues › Task performance › Use of equip/info › Aircraft control › Pilot
  • cause Aircraft › Aircraft oper/perf/capability › Performance/control parameters › Descent rate › Not attained/maintained

Pilot

  • Certificate: flight instructor, commercial pilot
  • Ratings: single-engine land; instructor: helicopter; rotorcraft: helicopter
  • Flight time: 2,713 hours in all; 713 in this make and model; 2,583 as pilot in command
  • Last flight review: April 11, 2019
  • Medical certificate: Class 2 (without waivers/limitations)
  • Seat: rgt
  • Injury: no injuries

The aircraft

  • Airframe total time: 11,218 hours
  • Last inspection: 100-hour inspection, November 28, 2019; 32 hours since
  • Maximum gross weight: 3,200 lb
  • Seats: 2
  • Landing gear: fixed
  • Engine: Rolls Royce C20C SERIES (turboshaft); 4,989 hours total
  • Operator: A Farmer Service Corp

The flight

  • Departed from: IPL Imperial CA at 6:15 pm
  • Destination: IPL Imperial CA
  • Flight plan: none

Weather at the time

  • Light: night
  • Visibility: 10 statute miles
  • Sky: clear
  • Temperature: 66°F (19°C), dew point 0°F (-18°C)

Injuries

FatalSeriousMinorNone
Flight crew1

Documents from the investigation the NTSB's docket: the evidence folder behind the report

2 documents, released by the NTSB on March 6, 2020. View them here, or download them; the NTSB redacts some personal details before release, and this site shows the NTSB's own titles rather than its file names.

The same docket at the NTSB · documents without a copy here are fetched from the NTSB when you open them.

Other NTSB records under N288NS the same tail number, which may have belonged to a different aircraft at the time

2016-07-22CEN16LA289 · accident near Lake Mills, IA · substantial damage · minor injuries

Everything on this page comes from the NTSB's public records. The narrative, probable cause and findings are the NTSB's own words; the coded tables behind the report are written out in plain English, with pilots' ages, home towns and medical details left out. The documents and photographs are the NTSB's docket, shown as the NTSB released them. This site's own text never names anyone involved. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.