NONE · MCDONNELL DOUGLAS HELICOPTER 369E · 2014-06-08 · Mesa, AZ, USA
Event
NTSB number
WPR14TA236
Event ID
20140608X15119
Type
Accident
Date
2014-06-08
Location
Mesa, AZ, USA
Coordinates
33.377223, -111.79528
Injuries
Highest injury
NONE
Fatal
0
Serious
0
Minor
0
Uninjured
2
Total aboard
2
Aircraft
Make
MCDONNELL DOUGLAS HELICOPTER
Model
369E
Registration
N504MP
FAR Part
PUBU
Engines
1
Damage
SUBS
Conditions
Light
NITE
Weather
VMC
Probable cause
The loss of engine power during cruise flight due to the decoupling of the engine’s turbine and compressor sections. Contributing to the decoupling was the excessive wear of the turbine-to-compressor coupling components due maintenance personnel’s placement of an incorrect shim during a compressor section overhaul and a latent misalignment within the exhaust collector.