SDR 9WGA2025021234405

Service difficulty report · Case · Boeing 747446

Difficulty date: February 8, 2025
Submitted: February 12, 2025
Operation: Air carrier
Aircraft: N344KD
Make and model: Boeing 747446
Aircraft serial: 26344
Aircraft time: 95,559 hours, 18,250 cycles
Engine: Ge CF680C2B1F
System (JASC): 7220 · Turbine Engine Air Inlet Section
Part: Case
Condition: Corroded
Location: Nr 2 Eng Fan
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

ENG #2 FAN CASE FOUND CORROSION UNDER MID OUTER LINER SEGMENT #3. REMOVED CORROSION AT ENG #2 FAN CASE, UNDER MID OUTER LINER SEGMENT #3. FOUND WITHIN LIMITS IAW B747-400 CF6-80C2 EM GEK 92451 REV 99, 12/01/2024, ESM 72-22-01, MAT. REMOVED 0.002. AIRCRAFT APPROVED FOR RETURN TO SERVICE.