Accident: Bell 206L
Sep 26, 2024 · Fern Prairie, WA
NTSB numberWPR24LA319Event id20240930195230
- 0
- Fatalities
- 0
- Serious injuries
- 0
- Minor injuries
- 1
- Uninjured
Probable cause
An aeroelastic interaction between the helicopter’s main rotor blades and nodal beam system, which resulted in oscillations that exceeded the design limits of the tailboom. Contributing to the accident was the failure of the main rotor blade manufacturer to adequately publish the appropriate recovery technique for a known flight dynamics issue.
Source: National Transportation Safety Board. Record last changed Oct 28, 2026, 10:54 UTC.
Aircraft involved
- Aircraft
- Bell 206L
- Registration
- N9984K
- Year built
- 1976
- Category
- Helicopter
- Damage
- Substantial
- Operating rules
- Part 91: general aviation
- Defining event
- Enroute Sys/Comp malf/fail (non-power)
Source: National Transportation Safety Board aviation accident database. Counts only; Voydar holds no names.
Nearest airports
Airports with a Voydar profile closest to the recorded position. Proximity only.
- Portland Troutdale Airport (TTD)7 nm (14 km) south-west
- Portland International Airport (PDX)13 nm (24 km) west
- Cascade Locks State Airport (CZK)18 nm (33 km) east
This page restates the NTSB's public record. Injury figures are counts; Voydar does not hold or publish the names of anyone involved.