Service difficulty report · Compressor · Bell 206L

Difficulty date
May 13, 1999
Submitted
March 26, 2000
Operation
General aviation
Make and model
Bell 206L
Engine
Allsn 250C20R2
Part
Compressor
Part number
23038126
Condition
Failed
Location
Engine
Part time
1,907 hours
Stage of operation
CR
Nature of condition
Y, J
Precautionary procedure
B, A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

(CAN) IN CRUISE AT 5,300 FEET, WITH AUTO-LIGHT AND ANTI-ICE SELECTED ON, A LOUD EXPLOSION WAS HEARD FOLLOWED BY AN IMMEDIATE YAW TO THE LEFT. THE ENGINE HORN ALSO BECAME AUDIBLE, SO AN AUTO ROTATION WAS CARRIED OUT. ON DESCENT, THE TAIL ROTOR CONTACTED THE TREES. AFTER LANDING ,THE ENGINE INTAKE AREA WAS FOUND TO HAVE COMPRESSOR PIECES LAYING ON THE FORWARD SIDE OF THE BELLMOUTH. THE TAIL ROTOR DRIVE WAS ALSO FOUND FAILED AFTER TOUCHDOWN. THE TURBINE TEMPERATURE WAS NOTICED TO BE ABOVE 900 CELSIUS DURING AUTO-ROTATION.

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