Service difficulty report · Disc · Boeing 747*

Difficulty date
February 5, 2019
Submitted
February 7, 2019
Operation
General aviation
Filed by
QEMY466L
GE Aircraft Engine Services Ltd
Aircraft
N466L
Make and model
Boeing 747*
Engine
Rroyce RB211524*
Engine time
102,912 hours, 17,206 cycles
Part
Disc
Part number
UL28922
Part serial
SETY244
Condition
Cracked
Location
Engine
Part time
106,593 hours, 16,888 cycles
Stage of operation
IN
How discovered
D
Nature of condition
Z
Precautionary procedure
O

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

What was found

LPT ST 3 DISC EXHIBITS CRACKING IN EXCESS OF 72-51-61REP041 DRESSING LIMITS OF 0.250" SINGLE CRACK AND 2.5" CUMULATIVE. ACTUAL CRACK LENGTHS ARE UP TO 0.900" X2 SINGLE CRACK AND 9.15" CUMULATIVE. DISC SENT TO MRB ON MRB LABEL 130001481366.