SDR UALA2010011800219

Service difficulty report · Blade · Boeing 747422

Difficulty date: January 17, 2010
Submitted: September 1, 2010
Operation: Air carrier
Aircraft: N127UA
Make and model: Boeing 747422
Aircraft serial: 28813
Aircraft time: 42,054 hours, 5,023 cycles
Engine: Pwa PW4056
Engine time: 34,524 hours, 50,689 cycles
System (JASC): 7230 · Turbine Engine Compressor Section
Part: Blade
Condition: Damaged
Location: Compressor
Stage of operation: IN
How discovered: 9
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

FUEL CONCERNS, FLIGHT DIVERTED. DURING THE WALK AROUND, DAMAGE TO THE FAN BLADES ON THE NR4 ENGINE WAS DISCOVERED. FBO EVALUATED AND CONFIRMED MULTIPLE FAN BLADE DAMAGES. ALSO, CONFIRMED SEVERAL FAN EXIT GUIDE VANES ARE DAMAGED. EFS WILL EVALUATE DAMAGES FURTHER. DURING THE WALK AROUND, DAMAGE TO THE FAN BLADES ON THE NR4 ENGINE WAS DISCOVERED. REPLACED FAN BLADES SET. ACCOMPLISHED TEST 8, VIBRATION SURVEY, ALL INDICATIONS NORMAL.