Service difficulty report · Hp Turbine · Boeing 777*

Difficulty date
August 29, 2024
Submitted
September 5, 2024
Operation
General aviation
Aircraft
N446L
Make and model
Boeing 777*
Engine
Ge GE90115B
Engine time
63,827 hours, 8,165 cycles
Part
Hp Turbine
Part number
2445M04G09
Part serial
GWN0H464
Condition
Damaged
Location
Engine
Part time
63,827 hours, 8,165 cycles
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

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

What was found

INCOMING CONDITION HIGHLIGHTED IN THE INSPECTION PROCESS. THERE IS LOCALISED PITTING ON AREA UC3 BETWEEN DOVETAIL POST 26 AND 27. THE PITTING ENCROACHES PAST THE BREAKPOINT INTO THE FORWARD MIDDLE RADIAL RABBET. DR# 02035694 REJECTED. TO BE REPORTED IN LINE WITH MANDATORY REPORTING REQUIREMENT 145 AMC 20-8A 9.3.(J) ANY DEFECT IN A LIFE-CONTROLLED CRITICAL PART THAT CAUSES ITS RETIREMENT BEFORE THE COMPLETION OF ITS FULL SERVICE LIFE.