Service difficulty report · Turbine · Gulstm G1159A

Difficulty date
July 8, 2012
Submitted
July 11, 2012
Operation
Air carrier
Aircraft
N221CM
Make and model
Gulstm G1159A
Aircraft serial
343
Aircraft time
13,271 hours, 6,638 cycles
Engine
Rroyce SPEY511*
Engine time
12,810 hours, 6,365 cycles
Part
Turbine
Condition
Damaged
Location
Rt Engine
Component
Engine · Rroyce · SPEY5118
Component part number
5118
Stage of operation
AP
How discovered
O
Nature of condition
X
Precautionary procedure
O

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

What was found

DURING APPROACH WHEN THROTTLES WERE RETARDED THE RIGHT ENGINE FLAMED OUT, ENGINE WAS SECURED AND UNEVENTFUL LANDING ACCOMPLISHED. UPON INVESTIGATION FOUND THE RIGHT ENGINE LOW PRESSURE COMPRESSOR/LOW PRESSURE TURBINE SECTION WOULD NOT ROTATE. HIGH PRESSURE COMPRESSOR/TURBINE SECTION WAS ABLE TO BE ROTATED. ACCOMPLISHED BORESCOPE INSPECTION, NO APPARENT INGESTION OR FAILURE IN COMPRESSOR SECTIONS WAS EVIDENT, NOR WERE THERE ANY ABNORMALITIES NOTED IN THE HP TURBINE SECTION. DEBRIS WAS NOTED IN THE TAILPIPE, APPEARED TO BE PIECES OF THE LP TURBINE SECTION, ALSO NOTED THE LP2 TURBINE HAD BLADES DAMAGED AND DISLODGED. CONDITION APPEARS TO BE CAUSED BY A FAILURE IN ONE OF THE LP TURBINES. FURTHER INFORMATION WILL NOT BE AVAILABLE UNTIL ENGINE IS DISASSEMBLED.