NONE · SIKORSKY S-76B · 1994-06-30 · NEWPORT, RI, USA
Event
NTSB number
NYC94FA106
Event ID
20001206X01604
Type
Accident
Date
1994-06-30
Location
NEWPORT, RI, USA
Injuries
Highest injury
NONE
Fatal
0
Serious
0
Minor
0
Uninjured
3
Total aboard
3
Aircraft
Make
SIKORSKY
Model
S-76B
Registration
N76UT
FAR Part
091
Engines
2
Damage
SUBS
Conditions
Light
DUSK
Weather
VMC
Probable cause
the failure of the left hand helical gear in the main gear box (MGB), due to undertorqued attaching bolts installed by the manufacturer, which resulted in a partial MGB failure. This failure resulted in the loss of the number one engine, illumination of the MGB chip light and a ditching to salt water on emergency floats.