SDR ALGA104483

Service difficulty report · Turbine Wheel · Clark 1000CLARK

Difficulty date
July 7, 2005
Submitted
July 28, 2005
Operation
Air carrier
Make and model
Clark 1000CLARK
Engine
Allsn 250C30
Part
Turbine Wheel
Part number
23053299
Part serial
X543914
Condition
Cracked
Location
Engine
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

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

What was found

WHEEL ASSY WAS RUN ON TEST CELL WITH TURBINE ASSY S/N CAT-90323, FOUND TO HAVE HEAVY N1 RUB AT SHUT DOWN FROM 25-28 SEAL BOAR WARP. DIASSEMBLE TO REPAIR, FOUND WHEEL TO HAVE CRACKS IN COATING ON TE AND RAW END ON LE OF BLADE. FOUND BLADE TIP ARE NOT ROUND. / REMOVED TURBINE ASSY SENT BACK TO AVIALL FOR WARRANTY.