SDR ASAA2021062335188

Service difficulty report · Hook · Boeing 737890

Difficulty date: June 23, 2021
Submitted: June 28, 2021
Operation: Air carrier
Aircraft: N518AS
Make and model: Boeing 737890
Aircraft serial: 35693
Aircraft time: 45,141 hours, 13,344 cycles
Engine: Cfmint CFM567B27
Engine time: 45,172 hours, 13,354 cycles
System (JASC): 7230 · Turbine Engine Compressor Section
Part: Hook
Condition: Worn
Location: Lt Engine Vsv
Part time: 45,172 hours, 13,354 cycles
Stage of operation: IN
How discovered: O
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 ACCOMP TC SBCFM56-7B-72-0986-1 ON #1 ENG ESN 896974 FOUND STAGE 3 VSV J HOOK AFT SIDE HAS WEAR CONTACT WITH DAMAGE APPROX ONE SEGMENT IN LENGTH, WITH VSV SEGMENT (INNER) RETAINER PINS WORN/WORKING, PICTURES PROVIDED TO TECH SVC (POWERPLANT) & POWERPLANT ENGINEERING. GROUNDED - YES. REMOVED AND REPLACED #1 ENGINE REF T/C #78471000. TRANSFER DEFECT TO SHOP W/O # 1876854.