NONE · ROBINSON R44 · 2017-04-20 · Orlando, FL, USA
Event
NTSB number
ERA17LA163
Event ID
20170421X02231
Type
Accident
Date
2017-04-20
Location
Orlando, FL, USA
Coordinates
28.45, -81.470558
Injuries
Highest injury
NONE
Fatal
0
Serious
0
Minor
0
Uninjured
3
Total aboard
3
Aircraft
Make
ROBINSON
Model
R44
Registration
N899GB
FAR Part
091
Engines
1
Damage
SUBS
Conditions
Light
DAYL
Weather
VMC
Probable cause
A partial failure of the helicopter's engine tachometer due to the separation of one of the magnet assemblies and engine roughness, which precipitated the pilot’s initiation of an off-airport autorotation, during which he applied improper aft cyclic flight control input, which was contrary to the Pilot’s Operating Handbook. The reason for the reported engine roughness could not be determined during postaccident examination and engine test-runs.