# SDR 2005UALA00509

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 6, 2005
- Submitted: June 14, 2005
- Operation: Air carrier
- Aircraft: N411UA
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 464
- Aircraft time: 37,680 hours, 13,600 cycles
- Engine: Iae V2527A5
- Engine time: 23,535 hours, 17,070 cycles
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Engine
- Condition: Failed
- Location: Nr 1
- Stage of operation: CL
- How discovered: O
- Nature of condition: X, M, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2005UALA00509

## Discrepancy

LOUD BANG ON CLIMBOUT FROM NR 1 ENGINE.  OIL QUANTITY AND PRESSURE WENT TO ZERO, EGT RED LINED.  ENGINE WAS REPLACED AND AIRCRAFT CONTINUED FUTHER FLYING WITHOUT INCIDENT.  THE ENGINE FAILURE WAS CONFIRMED AS A HIGH PRESSURE COMPRESSOR 3RD STAGE BLADE (R3 BLADE) FAILURE.   THIS IS AN INDUSTRY-WIDE AND KNOWN ISSUE, WITH BOTH A SHORT-TERM AND LONG-TERM FLEET MANAGEMENT PLAN:  SHORT TERM IS BORESCOPE MONITORING OF FLEET FOR C3 MID-SPAN CONDITION.  LONGER TERM IS UPGRADING OF C3 BLADE TO MORE ROBUST DESIGN..

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