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WPR20CA092

2020-02-18 · Colexico, California, United States · None · 1 aircraft · Status: Completed

Current FAA registration · N288NS

Make / Model
BELL OH-58A
Year of manufacture
1970 · 50 years old at event
Engine
ALLISON T63 SERIES (250 hp)
Seats / Engines
4 seats · 1 engine
Last airworthiness date
19990224
ADS-B equipped
Yes — Mode-S A2ECF0

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

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

Factual narrative

The commercial pilot reported that during an aerial application flight, he sprayed a row on the field and climbed to avoid wires on the south side of the field. He then made a right turn and began his descent back to the field. After he cleared the wires, he entered the field on the spray line and began raising the collective. He noticed that the torque gauge was responding, however, the rate of descent was not being halted and the helicopter subsequently impacted the ground 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 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. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12

NTSB Findings

FAA avdata. C = Cause, F = Factor.

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

Verbatim from NTSB's published report. Source file NTSB_2020_WPR20CA092.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.