Primary finding
Probable cause
A partial loss of engine power due to erosion in the compressor assembly module. Factors were a missing rotating labyrinth seal, the installation of which had not been performed by unknown maintenance personnel.
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NTSB investigation record
DEN99TA031
CompletedHughes 369D· N5013P
- Date
- January 4, 1999
- Location
- Woodruff, UT
- Conditions
- VMC
- Record
- Completed
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