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Aviation accident WPR17LA188

MINR · ROBINSON HELICOPTER COMPANY R44 II · 2017-08-26 · El Dorado Hills, CA, USA

Event

NTSB number
WPR17LA188
Event ID
20170826X21023
Type
Accident
Date
2017-08-26
Location
El Dorado Hills, CA, USA
Coordinates
38.723888, -121.070274

Injuries

Highest injury
MINR
Fatal
0
Serious
0
Minor
2
Uninjured
0
Total aboard
2

Aircraft

Make
ROBINSON HELICOPTER COMPANY
Model
R44 II
Registration
N61NM
FAR Part
091
Engines
1
Damage
SUBS

Conditions

Light
DUSK
Weather
VMC

Probable cause

Maintenance personnel's inadequate routine maintenance on the helicopter engine, which led to low cylinder compression, improper magneto timing, and camshaft lobe wear, which subsequently resulted in degraded engine performance.

Source

Authoritative
NTSB CAROL
Machine
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