MINR · BELL 407 · 2016-06-03 · Mountain City, TN, USA
Event
NTSB number
ERA16LA202
Event ID
20160603X45936
Type
Accident
Date
2016-06-03
Location
Mountain City, TN, USA
Coordinates
36.474723, -81.804725
Injuries
Highest injury
MINR
Fatal
0
Serious
0
Minor
1
Uninjured
3
Total aboard
4
Aircraft
Make
BELL
Model
407
Registration
N4999
FAR Part
135
Engines
1
Damage
SUBS
Conditions
Light
DAYL
Weather
VMC
Probable cause
An incorrect and unapproved repair of the engine compressor diffuser performed by a machinist at a repair facility, which resulted in failure of the compressor diffuser aft plate and a partial loss of engine power.