SDR KY7A16871

Service difficulty report · Blades · Swrngn SA226TC

Difficulty date
December 16, 2010
Submitted
December 23, 2010
Operation
Air carrier
Aircraft
N509SS
Make and model
Swrngn SA226TC
Aircraft serial
TC206
Aircraft time
35,677 hours, 56,389 cycles
Engine
Garrtt TPE3313U303G
Engine time
9,051 hours, 8,689 cycles
Part
Blades
Condition
Damaged
Location
Turbine Wheel
Component
Turbine Wheel
Component part number
5675697
Stage of operation
CR
How discovered
O
Nature of condition
J
Precautionary procedure
E

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

What was found

PILOT REPORTED THAT HE HAD A LOSS OF INDICATED TORQUE, SHORTLY FOLLOWED BY IGNITION LIGHT, OIL PRESSURE LIGHT AND A LOSS OF INDICATED OIL PRESSURE. THE ENGINE WAS SHUTDOWN AND LANDED AT DESTINATION. ENGINE TEARDOWN REVEALED THE TURBINE AND COMPRESSOR SEALS FAILED, THE FIRST TURBINE WHEEL HAD SIGNIFICANT BLADE FAILURE AT THE T/E, L/E SHOWED MINIMAL DETERIORATION. THE FIRST STATOR VANES ALSO SHOWED T/E DISTRESS WITH NO SIGNIFICANT L/E DAMAGE. THIS CONDITION IS INDICATIVE OF SLOW OR HUNG STARTS WITH HIGH TEMPS.