Service difficulty report · Turbine Wheel · Boeing 777*

Difficulty date
September 18, 2003
Submitted
September 24, 2003
Operation
Air carrier
Make and model
Boeing 777*
Engine
Ge GE9090B
Part
Turbine Wheel
Part number
1767M32P03
Part serial
1H1C0174
Condition
Damaged
Location
Lpt
Part time
20,549 hours
Component
Lpt · Ge
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

LPT BLADE LIBERATION, QTY 1 AT DISK SLOT NR 24. DISK POST SHOWS EVIDENCE OF HEAT EXPOSURE. BLADE RETENTION DOVETAIL HAS YIELDED ALLOWING BLADE LIBERATION. BLADE PLATFORM RECOVERED AND NO VISIBLE DAMAGE TO DOVETAIL. NO VISIBLE DAMAGE TO DOVETAIL. PARTS (DISK AND BLADES) RETURNED FOR FURTHER ELEVATION.