Service difficulty report · Turbine Disc

Difficulty date
December 3, 1998
Submitted
March 26, 2000
Operation
Air carrier
Engine
Lyc ALF502R5
Part
Turbine Disc
Part number
2121090R66
Condition
Cracked
Location
1st Stage
Part time
4,685 hours
Stage of operation
IN
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

(CAN) DURING ROUTINE INSPECTION OF 1ST STAGE TURBINE DISC BLADES, A CRACK WAS FOUND IN THE CRITICAL AREA OF THE BLADE TRAILING EDGE AT 2ND COOLING SLOT NEXT TO BLADE FILLET AREA.