SDR ASAA2018052224769

Service difficulty report · Blade · Boeing 737890

Difficulty date: May 22, 2018
Submitted: May 24, 2018
Operation: Air carrier
Aircraft: N570AS
Make and model: Boeing 737890
Aircraft serial: 35185
Aircraft time: 42,917 hours, 12,742 cycles
Engine: Cfmint CFM567B27
System (JASC): 7230 · Turbine Engine Compressor Section
Part: Blade
Part number: 3400010260
Condition: Damaged
Location: Nr 1 Engine
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

REF T/C 78472002 NR 1 ENG, DURING ACCOMP STEP 34 FOUND CU-NI-IN COATING OUT OF LIMITS ON BLADES 2 & 6 CONVEX SIDE AND BLADES 13,14,20,& 22 ON THE CONCAVE SIDE. GROUNDED - YES. BLADES 2,6,13,14,20, & 22 REMOVED AND REPLACED REF T/C 78472002 CFM 56-7 FAN BLADE LUBRICATION.