SDR ASAA2018111966890

Service difficulty report · Case · Boeing 737890

Difficulty date: November 16, 2018
Submitted: November 19, 2018
Operation: Air carrier
Aircraft: N577AS
Make and model: Boeing 737890
Aircraft serial: 35186
Aircraft time: 44,384 hours, 13,267 cycles
Engine: Cfmint CFM567B27
System (JASC): 7220 · Turbine Engine Air Inlet Section
Part: Case
Condition: Damaged
Location: Fan Inlet
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 78472000 #2 ENGINE FOUND FAN INLET CASE DAMAGE APPROX. 8 INCHES FWD OF O/B ENGINE CRADLE MOUNT AREA. 700X .150. GROUNDED - YES. REMOVED HIGH METAL AND SWAP ETCHED AREA PER B737-800 AMM 72-23-05-700 2.F.(1) & (2). FOUND GOUGE TO BE .004 DEEP WITHIN LIMITS EBM 72-23-31. ACCOMPLISHED FPI AMM 70-40-01/201 NO RELEVANT INDICATIONS AFTER BLEND OUT. APPLIED OXIDE FILM COATING TO SUBJECT AREA PER AMM 72-23-05-700-SUBTASK 72-23-05-390-001-F00(5).