SDR ASAA2019052729490

Service difficulty report · Pin · Boeing 737890

Difficulty date: May 27, 2019
Submitted: May 28, 2019
Operation: Air carrier
Aircraft: N519AS
Make and model: Boeing 737890
Aircraft serial: 36482
Aircraft time: 39,108 hours, 11,657 cycles
Engine: Cfmint CFM567B27
Engine time: 38,158 hours
System (JASC): 7230 · Turbine Engine Compressor Section
Part: Pin
Condition: Migrated
Location: Nr 1 Engine
Part time: 38,158 hours, 11,737 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

#1 ENGINE 3RD STAGE ANTI ROTATION SLAB HEADED PIN AT 9 OCLOCK ALF HAS ROTATED 90 DEGREES AND HAS STARTED TO MIGRATE. REF T/C SBCFM56-7B-72-0986-1. PHOTOS IN INSPECTION SERVER REF L/P 11759592, 3RD STAGE AT 3 OCLOCK , ANTI ROTATION REMAINS ROTATED LESS THAN 45 DEGREES. GROUNDED - YES. REPLACED #1 ENGINE PER T/C 78471000 AND 78471001. DISCREPANCY TRANSFERRED TO SHOP W/O 455272 N/R #0001 FOR DISPOSITION.