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Atlas / NTSB / WPR21LA236

NTSB CAROL · Event

Event WPR21LA236

2021-06-15 Townsend, Montana, United States Airport · NA None 1 aircraft Status: Completed

Registry · N398M

FAA Aircraft Registry record.

Make / Model

BELL UH-1H

Seats / Engines

15 seats · 1 engine

ADS-B equipped

Yes — Mode-S A4A194

Registrant of record

USDA FOREST SERVICE FEPP

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

The pilot’s failure to maintain helicopter control after an encounter with settling with power during approach at an altitude that was too low for recovery, which resulted in a hard landing.

Factual narrative

The pilot reported that, during the approach to the landing area, he made visual contact with the airport manager who cleared him to land on the west end of the pull-off tarmac. The pilot noted evidence of wind from the blowing willows from south-west. He initiated a left downwind approach, and upon turning from base to final at 500 ft above ground level, the helicopter started to settle with power and the pilot experienced a nearly direct tailwind. Due to the approach speed and proximity to the ground, the pilot was unable to fly out, so he leveled the helicopter and committed to landing. The helicopter touched down hard, spun right about 120° and rolled left upside down. The helicopter was destroyed by impact forces and postaccident fire. The pilot reported that there were no mechanical malfunctions or failures with the helicopter that would have precluded normal operation. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12

NTSB Findings

Hierarchical cause / factor breakdown from the FAA bulk avdata database. Each finding tagged C (Cause) or F (Factor).

  • Personnel issues-Task performance-Use of equip/info-Aircraft control-Pilot
  • Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Descent rate-Attain/maintain not possible
  • Personnel issues-Action/decision-Info processing/decision-Decision making/judgment-Pilot

Verbatim from NTSB's published report. Source file NTSB_2021_WPR21LA236.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

Related research

What the literature says.

Academic papers and agency reports matching this event's aircraft type. Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.

Browse the full corpus — academia portal ↗