SERS · ROBINSON R22 · 2020-10-18 · Winder, GA, USA
Event
NTSB number
ERA21LA024
Event ID
20201019102162
Type
Accident
Date
2020-10-18
Location
Winder, GA, USA
Coordinates
34.003829, -83.667184
Injuries
Highest injury
SERS
Fatal
0
Serious
1
Minor
0
Uninjured
0
Total aboard
1
Aircraft
Make
ROBINSON
Model
R22
Registration
N566BC
FAR Part
091
Engines
1
Damage
SUBS
Conditions
Light
DAYL
Weather
VMC
Probable cause
Maintenance personnel’s failure to properly secure the engine cooling fan attachment bolts, leading to vibration of the cooling fan, the overextension of the tension belt actuator, the failure of the drive system vee-belts, and the loss of power to the rotor system. Contributing to the accident was the failure of the operator to incorporate the manufacturer’s service bulletin addressing the prevention of belt tension actuator overextension, and the failure of maintenance personnel and the pilot to observe the loose fanwheel bolts during the most recent 100-hour inspection and during the preflight inspection of the helicopter (respectively).