Wednesday, April 17, 2019

McDonnell Douglas MD369E, registered to and operated by K & S Helicopters under the provisions of Title 14 Code of Federal Regulations Part 135, on-demand flight, N593C: Accident occurred April 16, 2019 in Hauula, Hawaii

Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; Honolulu, Hawaii

Aviation Accident Preliminary Report - National Transportation Safety Board:

Location: Hauula, HI
Accident Number: WPR19LA111
Date & Time: 04/16/2019, 1100 HST
Registration: N593C
Aircraft: MD HELICOPTER 369
Injuries: 4 None
Flight Conducted Under: Part 135: Air Taxi & Commuter - Non-scheduled 

On April 16, 2019, about 1100 Hawaii-Aleutian standard time, a McDonnell Douglas 369E helicopter, N593C, was substantially damaged following an autorotation to tree-covered terrain due to a loss of engine power about 1 mile west of Hauula, Hawaii. The commercial pilot and three passengers were not injured. The helicopter was registered to and operated by K & S Helicopters under the provisions of Title 14 Code of Federal Regulations Part 135, on-demand flight. Visual meteorological conditions prevailed for the local flight, and a flight plan was not filed. The flight originated from Turtle Bay Resort Heliport (HI58), Kahuku, Hawaii.

In a telephone interview with the National Transportation Safety Board investigator-in-charge, the pilot reported that after picking up his third passenger, he departed and climbed to an elevation of about 1,700 ft mean sea level. A few minutes later he observed that the N2 had decreased to about 70%. Shortly thereafter, as the N2 continued to decrease, the engine quit. The pilot then set up for an autorotation, during which the helicopter penetrated a canopy of trees prior to impact with the ground. The pilot stated that prior to departing from HI58 on the assigned flight, he had filled the fuel tank to capacity, which was 64 gallons. The helicopter was recovered the next day to a secured location for further examination.

Aircraft and Owner/Operator Information

Aircraft Make: MD HELICOPTER
Registration: N593C
Model/Series: 369 E
Aircraft Category: Helicopter
Amateur Built: No
Operator: K & S Helicopters Inc
Operating Certificate(s) Held: On-demand Air Taxi (135) 

Meteorological Information and Flight Plan

Conditions at Accident Site: Visual Conditions
Condition of Light: Day
Observation Facility, Elevation: HNL
Observation Time: 1053 HST
Distance from Accident Site: 15 Nautical Miles
Temperature/Dew Point: 26°C / 19°C
Lowest Cloud Condition: Few / 2500 ft agl
Wind Speed/Gusts, Direction: 9 knots / , 160°
Lowest Ceiling: None
Visibility:  10 Miles
Altimeter Setting: 30.07 inches Hg
Type of Flight Plan Filed: None
Departure Point: Hauula, HI
Destination: Kahuku, HI (HI58) 

Wreckage and Impact Information

Crew Injuries: 1 None
Aircraft Damage: Substantial
Passenger Injuries: 3 None
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 4 None
Latitude, Longitude:  21.588333, -157.911944

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