SOLOY HELICOPTERS LLC

Operated by Soloy Helicopters LLC (per NTSB report)

The pilot’s inadvertent entanglement of a lightweight Kevlar long line into the helicopters operating main rotor system, resulting in a severe imbalance and separation of the main rotor gearbox.

Operated by Soloy Helicopters LLC (per NTSB report)

The ground crew’s failure to remain clear of a tag line during sling load operations, resulting in his entanglement.

Operated by Soloy Helicopters LLC (per NTSB report)

The pilot’s failure to adequately respond to an encounter with whiteout conditions, which resulted in the helicopter’s collision with terrain. Contributing to the accident was the (1) operator’s inadequate pilot training program and pilot competency checks, which failed to evaluate pilot skill during an encounter with inadvertent instrument meteorological conditions, and (2) the Federal Aviation Administration principal operations inspector’s insufficient oversight of the operator, including their approval of the operator’s pilot training program without ensuring that it met requirements. Contributing to the severity of the surviving passenger’s injuries was the delayed notification of search and rescue organizations.

Operated by Soloy Helicopters (per NTSB report)

A loss of engine power for an undetermined reason.

Operated by SOLOY HELICOPTERS, LLC (per NTSB report)

The pilot’s failure to maintain clearance from a steel frame attached to a tracked drilling unit. Contributing to the accident was the pilot’s failure to visually identify the steel frame during the reconnaissance process.

Operated by Soloy Helicopters LLC (per NTSB report)

A total loss of engine power for undetermined reasons, which necessitated an emergency hovering autorotation, during which the helicopter impacted trees and terrain.

Operated by Soloy Helicopters (per NTSB report)

The pilot’s inadvertent cyclic control input after landing, which resulted in the main rotor blades striking the ground.

Operated by Soloy Helicopters LLC (per NTSB report)

A fatigue fracture of the governor-to-fuel control Pc line, which resulted in a partial loss of engine power.

Operated by SOLOY HELICOPTERS, INC. (per NTSB report)

THE PILOT'S IMPROPER IN-FLIGHT PLANNING/DECISION, AND HIS DELAY IN TAKING REMEDIAL ACTION. FACTORS WERE THE MOUNTAINOUS TERRAIN AND GUSTY WINDS.

Operated by SOLOY HELICOPTERS, INC. (per NTSB report)

A LOSS OF ENGINE POWER FOR UNDETERMINED REASONS. A FACTOR WAS THE ROUGH/UNEVEN TERRAIN.

Operated by SOLOY, L.C. (per NTSB report)

THE PILOT'S MISJUDGMENT OF HIS CLEARANCE ABOVE THE TERRAIN DUE TO DISTORTED VISUAL PERCEPTION. CONTRIBUTING TO THE ACCIDENT WAS THE WHITEOUT CONDITION.

Part: SNAP RING — FAILED (PULLEY) · airframe 10,530 hrs

THE SMALL SNAP RING IN THE HYDRAULIC PULLEY CAME DISLODGED DURING FLIGHT, CAUSING THE PULLEY TO DISCONNECT FROM THE PUMP. ON FURTHER INSPECTION THE PULLEY ASSEMBLY HAD SOME PITTING CORROSION WHERE THE BEARING MATES WITH THE PULLEY, ZONE B IN MM.

Part: FCU — INOPERATIVE (ENGINE)

WHILE IN FLIGHT, ACFT RPM`S AND N2 CLIMBED QUICKLY. RAISED COLLECTIVE AND ROLLED THROTTLE DOWN UNTIL THE RPM`S STABILIZED. ACFT RETURNED TO DEPARTURE AND LANDED WITHOUT INCIDENT. TROUBLESHOT SYS, FOUND THE FUEL CONTROL WAS NOT FUNCTIONING PROPERLY. A REPLACEMENT FUEL CONTROL WAS INSTALLED, ACFT GROUND RUN AND FLIGHT CHECKED AND NO PROBLEMS WERE NOTED.