NONE · SCHWEIZER 269C · 2012-05-24 · Piney Flats, TN, USA
Event
NTSB number
ERA12LA368
Event ID
20120529X01210
Type
Accident
Date
2012-05-24
Location
Piney Flats, TN, USA
Coordinates
36.410831, -82.351112
Injuries
Highest injury
NONE
Fatal
0
Serious
0
Minor
0
Uninjured
2
Total aboard
2
Aircraft
Make
SCHWEIZER
Model
269C
Registration
N760DA
FAR Part
091
Engines
1
Damage
SUBS
Conditions
Light
DAYL
Weather
VMC
Probable cause
The mechanic’s improper maintenance of the main transmission aft pinion nut and belt drive system, which resulted in the uncoupling of the tail rotor driveshaft and the subsequent loss of helicopter control.