SDR ASAA2018112327079

Service difficulty report · Blade · Boeing 737890

Difficulty date: November 23, 2018
Submitted: November 27, 2018
Operation: Air carrier
Aircraft: N518AS
Make and model: Boeing 737890
Aircraft serial: 35693
Aircraft time: 37,753 hours, 11,246 cycles
Engine: Cfmint CFM567B27
System (JASC): 7230 · Turbine Engine Compressor Section
Part: Blade
Part number: 3400010260
Condition: Worn
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

WHILE ACCOMPLISHING T/C 78472010 FAN LUBE ENG NR 1 S/N 896974 FOUND CU-NI-IN COATING OUT OF LIMITS ON FAN BLADES NR 3 CV SIDE .56, NR 4 CV SIDE .57, NR 8 CV SIDE .6, NR 11 CV SIDE .65, NR 13 CV SIDE .81, & NR 18 CV SIDE .71. GROUNDED - YES. ON NR 1 ENG REMOVED AND REPLACED DAMAGE FAN BLADES 3, 4, 8, ,11, 13, & 18 AND THEIR OPPOSITE PAIRS. REF T/C 78472010.