SDR AALA202601218683

Service difficulty report · Fuel Filter · Boeing 737823

Difficulty date: January 17, 2026
Submitted: January 21, 2026
Operation: Air carrier
Aircraft: N943AN
Make and model: Boeing 737823
Aircraft serial: 30599
Aircraft time: 70,260 hours, 29,809 cycles
Engine: Cfmint CFM567B242
System (JASC): 7320 · Fuel Controlling System
Part: Fuel Filter
Condition: Clogged
Location: Nr 2 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 WAS GROUNDED: ON CLIMBOUT AROUND 1200' AS THRUST WAS REDUCING, MASTER CAUTIONAND FUEL BYPASS LIGHT ILLUMINATED ON NUMBER 2 ENGINE OCCURRED. REMOVE AND REPLACED FUEL FILTERS ON BOTH ENGINES (AALA202601218683) (AALA202601219379). PER JOBCARD 08L40073004. ALSO, REMOVED AND REPLACED ENGINE 2 FUEL FILTERS DIFFERENTIAL PRESSURE SWITCH (AALA202601218777). PER AMM 73-34-01. OPS CHECK GOOD, LEAK CHECK GOOD. FUEL BYPASS LIGHT DID NOT COME ON.