No fatalities

Helicopter Drifts and Strikes Tree During Offshore Orbit

Cypress Island, WA, United States

On August 21, 2019, a Robinson R44 Undesignat operated by Peregrine Air LLC was involved in an aviation accident near Cypress Island, WA. No fatalities were reported. Investigators recorded the probable cause as: The pilot's failure to maintain adequate clearance from a tree while maneuvering at a low altitude. This summary draws on records from NTSB; 12 related events involving the same aircraft type or operator are linked below.

SourcesNTSBPrimary reportUpdated 2026-08-03Data APIEditorial standards

A helicopter performing a right orbit about 20 feet above water off an island struck a leaning tree, lost altitude, and came to rest on its side in the water. The main rotor blades and fuselage sustained substantial damage.

Incident Description

According to the pilot's report, the helicopter began a right orbit while off the shore of an island, flying approximately 20 feet above the water. During the maneuver, the helicopter drifted from its intended path and struck a tree that was leaning over the water. Following the impact, the helicopter lost altitude and eventually came to rest on its right side after contacting the water.

Damage

Substantial damage was inflicted upon the helicopter's main rotor blades and fuselage.

Pilot Observations

The pilot reported that no preimpact malfunctions or failures occurred that would have prevented normal operation. Additionally, the pilot did not submit the National Transportation Safety Board Pilot/Operator Aircraft Accident/Incident Report Form 6120.1.

Contributing factors

Altitude — Not attained/maintainedPilot

Frequently asked questions

What happened in the 21 Aug 2019 Robinson R44 Undesignat accident near Cypress Island, WA?

A helicopter performing a right orbit about 20 feet above water off an island struck a leaning tree, lost altitude, and came to rest on its side in the water. The main rotor blades and fuselage sustained substantial damage.

Were there any fatalities in the 21 Aug 2019 Robinson R44 Undesignat accident?

No fatalities were recorded in this accident.

What aircraft was involved and where did it happen?

The accident on 21 Aug 2019 involved a Robinson R44 Undesignat, operated by Peregrine Air LLC, at Cypress Island, WA.

What was the probable cause of the accident?

The pilot's failure to maintain adequate clearance from a tree while maneuvering at a low altitude.