Service difficulty report · Turbine Wheel · Boeing 777

Difficulty date
September 23, 2026
Submitted
September 23, 2026
Operation
General aviation
Aircraft
N446L
Make and model
Boeing 777
Engine
Ge GE90115B
Part
Turbine Wheel
Part number
1865M13G08
Part serial
GWN0RCJ7
Condition
Sheared
Location
Zone 400
Part time
47,424 hours, 7,362 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

THE SUBJECT DISK-HPT STG 1, HAS SHEARED INTERSTAGE ID BAYONET TABS WHICH WERE IDENTIFIED AT LOCATIONS 8,9,10 &11 PRIOR TO DISASSEMBLY. THE CONDITION IDENTIFIED HAS BEEN EVALUATED AND REQUESTED FOR THE HARDWARE TO BE TAKEN OUT OF SERVICE AND SENT FOR FURTHER TESTING. TO BE REPORTED I.A.W AMC-20 8A (J) ANY DEFECT IN A LIFE-CONTROLLED CRITICAL PART THAT CAUSES ITS RETIREMENT BEFORE THE COMPLETION OF ITS FULL-SERVICE LIFE.