20200727010669A

Accident · Substantial damage

FAA accident report · Robinson Helicopter R44 · Hebron, NE · July 27, 2020

Date
July 27, 2020 · 15:30 local
Place
Hebron, NE
Airport
Hebron Municipal
Phase of flight
Takeoff: Climb Out
Operating rules
Agricultural (Part 137)
Operator
2KWG
Damage
Substantial damage
Aircraft
N771GB
NTSB investigation
NTSBCEN20CA316
Reported as
Robinson Helicopter R44
Reported engine
Lycoming 0-540 series
People aboard
1
Fatal injuries
0
Other injuries
0
Pilot’s certificates
Commercial pilot, flight instructor
Pilot’s flight hours
2,885 total415 in this make and model60 in the last 90 days

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

On July 27, 2020 at approximately 15:30 central daylight time, a Robinson R44 helicopter was substantially damaged due to impact with terrain shortly after takeoff at the Hebron, Nebraska (hjh) municipal airport heading to a nearby field to spray.

After the first round of spraying, the helicopter returned to the Hebron Municipal Airport to re-fuel. The helicopter was fueled from a trailer-mounted tank, which had been filled from the operators secondary tank, instead of the primary refueling tank.

The pilot then helped get the trailers ready with a new load of chemicals and then had lunch. Following lunch, the pilot started up the helicopter normally, the pilot stated he did not sump the fuel tanks during his pre-flight checks. He ran through his post startup checklists and everything checked normal. He spooled up to 100% and took off towards the nw to avoid power lines, and once clear turned back to the north and continued to accelerate and climb.

At approximately 200 feet, the low rotor light and horn came on, pilot lowered the collective and rolled on the throttle. With no change, he continued to lower collective and roll on more throttle. After approx. 2-3 seconds in a descent with rotor RPM continuing to drop, collective was fulldown and engine tac had dropped to 0, and the sound of the engine was gone. The pilot then leveled the helicopter to try and perform an autorotation, with no altitude left to maneuver, he went straight into the corn field. When he flared at the bottom, he experienced violent shaking and a very hard landing.

The rotor blades cut off tail boom, the aircraft bounced and rotated counter clockwise and rolled onto right side facing 180 degrees from point of impact. Pilot evacuated aircraft without assistance.

As the FAA filed it

ON JULY 27, 2020 AT APPROXIMATELY 15:30 CENTRAL DAYLIGHT TIME, A ROBINSON R44 HELICOPTER WAS SUBSTANTIALLY DAMAGED DUE TO IMPACT WITH TERRAIN SHORTLY AFTER TAKEOFF AT THE HEBRON, NEBRASKA (HJH) MUNICIPAL AIRPORT HEADING TO A NEARBY FIELD TO SPRAY.

AFTER THE FIRST ROUND OF SPRAYING, THE HELICOPTER RETURNED TO THE HEBRON MUNICIPAL AIRPORT TO RE-FUEL. THE HELICOPTER WAS FUELED FROM A TRAILER-MOUNTED TANK, WHICH HAD BEEN FILLED FROM THE OPERATORS SECONDARY TANK, INSTEAD OF THE PRIMARY REFUELING TANK.

THE PILOT THEN HELPED GET THE TRAILERS READY WITH A NEW LOAD OF CHEMICALS AND THEN HAD LUNCH. FOLLOWING LUNCH, THE PILOT STARTED UP THE HELICOPTER NORMALLY, THE PILOT STATED HE DID NOT SUMP THE FUEL TANKS DURING HIS PRE-FLIGHT CHECKS. HE RAN THROUGH HIS POST STARTUP CHECKLISTS AND EVERYTHING CHECKED NORMAL. HE SPOOLED UP TO 100% AND TOOK OFF TOWARDS THE NW TO AVOID POWER LINES, AND ONCE CLEAR TURNED BACK TO THE NORTH AND CONTINUED TO ACCELERATE AND CLIMB.

AT APPROXIMATELY 200 FEET, THE LOW ROTOR LIGHT AND HORN CAME ON, PILOT LOWERED THE COLLECTIVE AND ROLLED ON THE THROTTLE. WITH NO CHANGE, HE CONTINUED TO LOWER COLLECTIVE AND ROLL ON MORE THROTTLE. AFTER APPROX. 2-3 SECONDS IN A DESCENT WITH ROTOR RPM CONTINUING TO DROP, COLLECTIVE WAS FULLDOWN AND ENGINE TAC HAD DROPPED TO 0, AND THE SOUND OF THE ENGINE WAS GONE. THE PILOT THEN LEVELED THE HELICOPTER TO TRY AND PERFORM AN AUTOROTATION, WITH NO ALTITUDE LEFT TO MANEUVER, HE WENT STRAIGHT INTO THE CORN FIELD. WHEN HE FLARED AT THE BOTTOM, HE EXPERIENCED VIOLENT SHAKING AND A VERY HARD LANDING.

THE ROTOR BLADES CUT OFF TAIL BOOM, THE AIRCRAFT BOUNCED AND ROTATED COUNTER CLOCKWISE AND ROLLED ONTO RIGHT SIDE FACING 180 DEGREES FROM POINT OF IMPACT. PILOT EVACUATED AIRCRAFT WITHOUT ASSISTANCE.

NTSB investigation

The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.