SERS · EUROCOPTER DEUTSCHLAND GMBH EC135 P1 · 2018-07-08 · Chicago, IL, USA
Event
NTSB number
CEN18FA259
Event ID
20180708X00804
Type
Accident
Date
2018-07-08
Location
Chicago, IL, USA
Coordinates
41.715278, -87.624443
Injuries
Highest injury
SERS
Fatal
0
Serious
3
Minor
0
Uninjured
1
Total aboard
4
Aircraft
Make
EUROCOPTER DEUTSCHLAND GMBH
Model
EC135 P1
Registration
N312SA
FAR Part
135
Engines
2
Damage
SUBS
Conditions
Light
NITE
Weather
VMC
Probable cause
The pilot's inadvertent disabling of the No. 1 and No. 2 engines' electronic engine control systems, which resulted in engine and rotor overspeed conditions, a subsequent autorotation, and a hard landing. Contributing to the accident were the pilot's inexperience with the helicopter variant and the operator’s lack of a more robust helicopter differences training program.