20200825012599A

Accident · Substantial damage

FAA accident report · Eurocopter France AS350B2 · Mount Iliamna, AK · August 25, 2020

Date
August 25, 2020 · 07:12 local
Place
Mount Iliamna, AK
Airport
Johnson River Camp
Phase of flight
Landing: Approach
Operating rules
Air taxi and commuter (Part 135)
Operator
2SYA
Damage
Substantial damage
Aircraft
N160SH
NTSB investigation
NTSBANC20LA083
Reported as
Eurocopter France AS350B2
Reported engine
Honeywell LTS101-700D-2
People aboard
1
Fatal injuries
0
Other injuries
0

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.

As aircraft approached the helipad (approximately 25 feet away horizontally) with very low forward airspeed, slightly above the level of the pad the engine flamed out. Pilot let the resulting yaw to the right continue, and entered auto-rotation to ensure the safety of the people on the pad to his left. Pilot realized that he was not going to be able to reach the flatter terrain of the basin approximately 500 feet below and began to try to pull the nose up and pull in collective before contact was made with the terrain. Aircraft impacted terrain with the nose pointing downslope, and pilot states that he could feel the skids sliding downhill briefly before a skid

Caught a rock and rolled the helicopter over. The fuselage came to rest on it?s side on a break of the slope approximately 300 feet below the helipad.

As the FAA filed it

AS AIRCRAFT APPROACHED THE HELIPAD (APPROXIMATELY 25 FEET AWAY HORIZONTALLY) WITH VERY LOW FORWARD AIRSPEED, SLIGHTLY ABOVE THE LEVEL OF THE PAD THE ENGINE FLAMED OUT. PILOT LET THE RESULTING YAW TO THE RIGHT CONTINUE, AND ENTERED AUTO-ROTATION TO ENSURE THE SAFETY OF THE PEOPLE ON THE PAD TO HIS LEFT. PILOT REALIZED THAT HE WAS NOT GOING TO BE ABLE TO REACH THE FLATTER TERRAIN OF THE BASIN APPROXIMATELY 500 FEET BELOW AND BEGAN TO TRY TO PULL THE NOSE UP AND PULL IN COLLECTIVE BEFORE CONTACT WAS MADE WITH THE TERRAIN. AIRCRAFT IMPACTED TERRAIN WITH THE NOSE POINTING DOWNSLOPE, AND PILOT STATES THAT HE COULD FEEL THE SKIDS SLIDING DOWNHILL BRIEFLY BEFORE A SKID

CAUGHT A ROCK AND ROLLED THE HELICOPTER OVER. THE FUSELAGE CAME TO REST ON IT?S SIDE ON A BREAK OF THE SLOPE APPROXIMATELY 300 FEET BELOW THE HELIPAD.

NTSB investigation

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