Service difficulty report · Turbine Wheel

Difficulty date
August 20, 2026
Submitted
August 20, 2026
Operation
General aviation
Aircraft
N446L
Engine
Ge GE90115B
Engine time
36,170 hours, 3,818 cycles
Part
Turbine Wheel
Part number
1865M13G08
Part serial
GWN12PPF
Condition
Failed Insp
Location
Engine
Part time
36,170 hours, 3,818 cycles
Stage of operation
IN
How discovered
U
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 STAGE 1 FAILED NDT ULTRASONIC INSPECTION ON SURFACE SM AT POST NUMBER 54 (AS PER SP007), BETWEEN SLOT NUMBERS 16 & 17, DR 02338861 IS UNDER INVESTIGATION WITH THE OEM FOLLOWING UTI INDICATIONS DURING INCOMING INSPECTION. PART RETIRED FROM SERVICE. 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.