# SDR 08FDEA00800

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 9, 2008
- Submitted: March 10, 2008
- Operation: Air carrier
- Aircraft: N423FE
- Make and model: Airbus A310-203
- Registry model: [Airbus A310-203](https://openairdocs.org/model/airbus-industrie-a310-203) (OpenAirDocs)
- Aircraft serial: 281
- Aircraft time: 38,859 hours, 17,361 cycles
- Engine: Ge CF680A3
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Engine
- Condition: Vibration
- Location: Nr 1
- Part time: 35,330 hours, 18,507 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: E, J
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/08FDEA00800

## Discrepancy

CLIMBING THROUGH FL 320 TO FL 350 WITH ALL CONDITION NORMAL, ACFT SHUDDERED AND SWERVED SLIGHTLY, THEN BEGAN CONTINUOUS THUMPS, BOTH AUDIBLE AND CLEARLY FELT THROUGH AIRFRAME.  THERE WERE NO ECAM ADVISORIES, BUT NR 1 ENGINE N1 DECREASED TO APPROX 60 PERCENT.  BROUGHT NR 1 THROTTLE TO IDLE AND THUMPS STOPPED.  STILL NO OBVIOUS INSTRUMENT INDICATIONS AND NO VIBRATION INDICATION ON ECAM ENGINE PAGE.  ADVANCED THROTTLE SLIGHTLY AND GOT IMMEDIATE RETURN OF VIBRATIONS.  SHUT DOWN ENGINE, DECLARED EMERGENCY, AND DIVERTED.  R&R  NR 1 ENGINE IAW WORK CARD   44T0701-1, OPS CHECK NORMAL IAW WORK CARD 44T0701-1.

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