Service difficulty report · Engine · Boeing 737890

Difficulty date
May 23, 2017
Submitted
May 25, 2017
Operation
Air carrier
Aircraft
N586AS
Make and model
Boeing 737890
Aircraft serial
35189
Aircraft time
36,874 hours, 11,235 cycles
Engine
Cfmint CFM567B27B3
Part
Engine
Part number
CFM567B273
Part serial
894916
Condition
Damaged
Location
Nr 2
Part time
36,875 hours, 11,236 cycles
Stage of operation
IN
How discovered
V
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

WHILE ACCOMPLISHING TC SBCCFM56-7B-0986-1, THE NR 2 ENGINE, THIRD STAGE SHROUD SEGMENT RETAINING PIN AT 9 O'CLOCK POSITION CAUSING DOWNSTREAM DAMAGE TO HPC & VSV AND SECOND STAGE SEAL SEGMENT ROTATED & OVERLAPPED UPPER SEGMENT CRACKED APPROXIMATELY 2 INCHES WITH MISSING MATERIAL AT THE 3 O'CLOCK POSITION. ACFT GROUNDED. REMOVED & REPLACED THE NR 2 ENGINE IAW W/O #376251.