SDR SWAA990378

Service difficulty report · Blade · Boeing 7373H4

Difficulty date: February 25, 1999
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N313SW
Make and model: Boeing 7373H4
Aircraft serial: 23335
Engine: Ge CFM56*
System (JASC): 7230 · Turbine Engine Compressor Section
Part: Blade
Condition: Damaged
Location: Nr 1 Engine
Stage of operation: CR
Nature of condition: C
Precautionary procedure: O

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

What was found

AT FL 310, FELT AND HEARD A LOUD THUMP, NOTED CHANGE IN NR 1 ENG N2 AND FUEL FLOW INCREASE. ENG VIBRATION MON ROSE TO PLUS 4. PERFORMED CHECKLIST, RAN ON REDUCED POWER. VIBRATION CONTINUED TO SHUTDOWN AT GATE. INSPECTED AND FOUND ICE DAMAGE TO C1 FAN. REPLACED FAN ASSY PER MM. NO OTHER DAMAGE NOTICED.

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