Service difficulty report · Shaft · Boeing 777224

Difficulty date
April 1, 2007
Submitted
April 24, 2007
Operation
General aviation
Aircraft
N78017
Make and model
Boeing 777224
Aircraft serial
31679
Engine
Ge GE9090B
Part
Shaft
Part number
1767M75G03
Part serial
IHIN0223
Condition
Unserviceable
Location
Lpt Fan
Part time
36,785 hours
Component
Lpt Fan · 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

AIRCRAFT TAKEOFF WAS ABORTED, A 147 KNOTS AFTER ENGINE LOST POWER. AC WAS STOPPED SAFELY AND ALL PASSENGERS AND CREW DEPLANED SAFELY. UPON INSPECTION OF THE ENGINE, THE FAN ROTATED FREELY, BUT THE LPT DID NOT ROTATE. BS1 OF THE ENGINE SHOWED THAT THE HPT WAS CLEAN, BUT THE LPT WAS HEAVILY DAMAGED. THE ENGINE WAS SHIPPED TO MFG. INITIAL INSPECTIONS SHOWED THAT THE FAN MID SHAFT WAS SEPARATED IN THE AXIAL PLANE OF THE HPC S3 DISC. THE CENTER VENT TUBE WAS SEPARATED IN 3 PLACES ALL AFT OF FMS SEPARATION. AND INVESTIGATION IS ON GOING. (K)