SDR AALA2020070879011

Service difficulty report · Fuel Filter · Boeing 737823

Difficulty date: July 6, 2020
Submitted: July 8, 2020
Operation: Air carrier
Aircraft: N942AN
Make and model: Boeing 737823
Aircraft serial: 30084
Aircraft time: 58,813 hours, 24,570 cycles
Engine: Cfmint CFM567B27E
Engine time: 25,086 hours, 10,220 cycles
System (JASC): 7310 · Engine Fuel Distribution
Part: Fuel Filter
Condition: Clogged
Location: Lt Engine
Stage of operation: CL
How discovered: O
Nature of condition: J
Precautionary procedure: O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

AIRCRAFT GROUNDED - AFTER TAKEOFF, LEFT FILTER BYPASS LIGHT ILLUMINATED FOR 10 MINUTES WITH MASTER CAUTION. DID NOT REOCCUR AGAIN DURING FLIGHT, ENGINE INDICATIONS ALL NORMAL. REMOVED AND REPLACED #1 FUEL FILTER DIFFERENTIAL PRESSURE SWITCH (AALA202007079001) PER AMM TASK 73-34-01-000-801. REMOVED FUEL FILTER, LARGE AMOUNT OF DEBRIS IN FILTER. REPLACED #1 FUEL FILTER (AALA2020079011) PER AMM TASK 73-11-02-000-801. PERFORMED SATISFACTORY ENGINE RUNS.