MD Helicopters 369 N593C

Summary

On 16 April 2019 at about 21:26 local time, a MD Helicopters 369 registered N593C, operated by K & S Helicopters Inc, was involved in an accident near Hauula, Hawaii, United States. 4 people were on board and nobody was injured. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

16 April 2019 at 21:26

Classification

Accident

Location

Hauula, Hawaii, United States

Coordinates

21.5883, -157.9119

Aircraft

MD Helicopters 369

Registration

N593C

Category

Helicopter

Year built

1986

Engines

1

Operator

K & S Helicopters Inc

Operating rule

Part 135: Air Taxi & Commuter

Purpose of flight

Business

Phase of flight

Not recorded

Route

Wiamano → Kahuku

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

WPR19LA111

Nobody was injured.

Fuel exhaustion as a result of the pilot’s fuel burn miscalculation. Contributing to the accident was the inoperative caution light indicating low fuel level. 

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

During the fifth flight of the day, while flying about 1,700 ft mean sea level, the pilot noted the engine-out [warning] beeping, the engine-out light, as well as the re-ignition warning light on the caution warning panel. He noted the FUEL LEVEL LOW caution light did not illuminate during the flight. The pilot entered an autorotation and was able to descend to what looked like a more level area. He made a mayday call, flew toward the lowest and most uniform area of trees, and executed a “full down” autorotation. As the helicopter descended through the tree canopy, the helicopter rolled to the right before coming to rest upside down. All four occupants were able to evacuate the helicopter without assistance. The pilot reported he had 64 gallons of fuel onboard before beginning his flights for the day. He conducted four flights before the accident flight that involved transporting passengers and cargo to different landing zones. He noted he had about 200 lbs of fuel according to the fuel gauge before he lifted off for the fifth flight. He flew three passengers to three different landing zones to deploy equipment before starting toward a staging area to refuel. He stated the fuel gauge indicated 100 lbs of fuel remaining when he lifted off from the final landing zone to fly about 5 minutes to the staging area. The pilot stated that the engine failure was due to fuel exhaustion because he overestimated his shutdown time, underestimated his flight time, and relied solely on the fuel gauge. Examination of the fuel low warning system found that a wire to a resistor on the sending unit was corroded and separated, resulting in the FUEL LOW LEVEL light being inoperable. Had the pilot been provided information that a low fuel level condition existed, he would have had about 5 minutes to select an emergency landing site, if airborne, or had the opportunity to decide not to depart on the next flight segment.

Quoted verbatim from the NTSB record.