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NTSB Preliminary Report: Kalapana, HI

 

Location:

Kalapana, HI

Accident Number:

ANC20LA028

Date & Time:

03/05/2020, 1130 HST

Registration:

N11QK

Aircraft:

Eurocopter EC130

Injuries:

2 Minor, 4 None

Flight Conducted Under:

Part 135: Air Taxi & Commuter - Non-scheduled - Sightseeing

On March 5, 2020, about 1130 Hawaii standard time, a Airbus EC130 B4 helicopter, N11QK, was substantially damaged when it was involved in an accident, about 6 miles north of Kalapana, Hawaii. Of the six occupants on board, the commercial pilot and three passengers were uninjured, and two passengers sustained minor injuries. The helicopter was operated as a Title 14 Code of Federal Regulations Part 135 flight.

According to the pilot, the accident helicopter was the second of two commercial air tour helicopters departing Hilo International Airport (PHTO). After departure, they flew in a southerly direction and remained slightly offshore for a short time before turning west along the shoreline. The two helicopters proceeded to a geographic area known as the "Old Ocean Entry." As the helicopter passed over the shoreline, the pilot noticed a significant, high frequency airframe vibration. He said that as soon as the vibration started, the tail rotor chip annunciator light briefly illuminated, and as the vibration continued, the tail rotor chip light "flickered." The vibration and noise stopped after a few seconds and the chip light extinguished. He selected a large open area as a precautionary landing site and slowed the helicopter on the approach. As the helicopter slowed, he raised the collective, and applied right tail rotor pedal, but the nose of the helicopter veered to the left. The pilot noted that he eventually applied full right tail rotor pedal, but the nose of the helicopter continued to the left. At about 200 feet above ground level, with the right tail rotor pedal fully depressed, the helicopter began to spin to the left. In an effort to stop the spin, he attempted to gain forward airspeed, but eventually closed the engine throttle and preformed a hovering autorotation. He said the helicopter descended, touched down hard, and subsequently rolled on its right side, sustaining substantial damage to the fuselage, tail boom, and the main rotor drive system.

A National Transportation Safety Board (NTSB) postaccident examination of the helicopter revealed that one of the ten tail rotor fenestron blades fractured at the blade root, and it subsequently deflected off the fenestron drive shaft, creating an imbalance, which was followed by the failure of the drive shaft. The tail rotor chip detector cannon plug was found to have an intermittent connection, and an inspection of the tail rotor gearbox magnetic drain plug revealed very small metallic particles. All ten tail rotor fenestron blades have been retained and shipped to the NTSB's Materials Laboratory for further examination.

Aircraft and Owner/Operator Information

Aircraft Make:

Eurocopter

Registration:

N11QK

Model/Series:

EC130 B4

Aircraft Category:

Helicopter

Amateur Built:

No

 

 

Operator:

Helicopter Consultanats of Maui LLC

Operating Certificate(s) Held:

Commercial Air Tour (136); Agricultural Aircraft (137); Rotorcraft External Load (133); On-demand Air Taxi (135)

Operator Does Business As:

Blue Hawaiian Helicopters

Operator Designator Code:

 

 

Meteorological Information and Flight Plan

Conditions at Accident Site:

Visual Conditions

Condition of Light:

Day

Observation Facility, Elevation:

PHTO

Observation Time:

2153 UTC

Distance from Accident Site:

18 Nautical Miles

Temperature/Dew Point:

26°C / 18°C

Lowest Cloud Condition:

Few / 2500 ft agl

Wind Speed/Gusts, Direction:

6 knots / , 80°

Lowest Ceiling:

Overcast / 3800 ft agl

Visibility

10 Miles

Altimeter Setting:

30.07 inches Hg

Type of Flight Plan Filed:

None

Departure Point:

Kalapana, HI

Destination:

Kalapana, HI

 

Wreckage and Impact Information

Crew Injuries:

1 None

Aircraft Damage:

Substantial

Passenger Injuries:

2 Minor, 3 None

Aircraft Fire:

None

Ground Injuries:

N/A

Aircraft Explosion:

None

Total Injuries:

2 Minor, 4 None

Latitude, Longitude:

19.438611, -155.000000 (est)

 

Administrative Information

Investigator In Charge (IIC):

David B Banning

Additional Participating Persons:

John Chicosky; Blue Hawaiian Helicopters; Hilo, HI

Eric Hamp; Blue Hawaiian Helicopters; Hilo, HI

Leonard T Spencer; Federal Aviation Administration; Honolulu, HI

Note:

The NTSB did not travel to the scene of this accident.





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