SDR 2001UALA00424

Service difficulty report · Blade · Boeing 737322

Difficulty date: April 5, 2001
Submitted: April 12, 2001
Operation: Air carrier
Aircraft: N398UA
Make and model: Boeing 737322
Aircraft serial: 24673
Aircraft time: 32,326 hours, 22,238 cycles
Engine: Ge CFM56*
Engine time: 38,060 hours, 23,338 cycles
System (JASC): 7230 · Turbine Engine Compressor Section
Part: Blade
Condition: Failed
Location: Nr 1 Compressor
Stage of operation: NR
How discovered: O
Nature of condition: J
Precautionary procedure: A

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

What was found

NR 1 ENGINE COMPRESSOR STALL. SUPPLEMENTAL DATA UPDATE BORESCOPE INSPECTION REVEALED 7TH STAGE HIGH PRESSURE COMPRESSOR BLADE DAMAGE BEYOND LIMITS. THE ENGINE WAS REMOVED AND IS BEING SENT TO THE SHOP FOR TEARDOWN AND FURTHER ANALYSIS.