SDR ASAA2019022728373

Service difficulty report · Engine · Boeing 737890

Difficulty date: February 27, 2019
Submitted: February 28, 2019
Operation: Air carrier
Aircraft: N589AS
Make and model: Boeing 737890
Aircraft serial: 35686
Aircraft time: 42,930 hours, 12,922 cycles
Engine: Cfmint CFM567B273
Engine time: 37,653 hours, 11,152 cycles
System (JASC): 7250 · Turbine Section
Part: Engine
Condition: Damaged
Location: Left
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

SILVER FILIFORM MATERIAL FOUND IN THE #1 ENGINE FLAME ARRESTOR AND AFT SUMP MCD. GROUNDED - YES. REMOVED 31 ENG OIL INLET COVER REF B737-800 AMM 72-56-00-000-802-F00. ACCOMPLISHED DIMENSIONAL INSP OF OUTER DIAMETER REAR VENT TUBE SEAL TEETH AFT SIDE VERTICAL MEASUREMENT: 2.070" & HORIZONTAL 2.069". FWD SIDE SEAL TEETH VERTICAL MEASUREMENT: 2.075" & HORIZONTAL: 2.073. 10601 PER E.S.M. 72-55-10-200-001. ACCOMP. STEPS 1-3 OF TSR ENGINE TO BE REPLACED.