# SDR AALA201712149040

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 11, 2017
- Submitted: December 17, 2017
- Operation: Air carrier
- Aircraft: [N290AY](https://openairdocs.org/aircraft/N290AY), registered now
- Make and model: Airbus A330-243
- Registry model: [Airbus A330-243](https://openairdocs.org/model/airbus-a330-243) (OpenAirDocs)
- Aircraft serial: 1480
- Aircraft time: 16,817 hours, 2,709 cycles
- Engine: Rroyce RB211TRENT77
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Start Valve
- Part number: 32915222
- Part serial: 1141
- Condition: Malfunctioned
- Location: Lt Engine
- Part time: 28,416 hours, 4,194 cycles
- Stage of operation: LD
- How discovered: V
- Nature of condition: Y
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201712149040

## Discrepancy

AIRCRAFT WAS GROUNDED. ADJUSTING ALTITUDE FROM FL 360 TO FL 380 AS SOON AS POWER(A/T) INCREASED ENGINE HAD 2 COMPRESSOR STALLS ABOUT 15 SECS APART. N3VIB INCREASED TO 7.0 RUNNING AT REDUCED POWER LOWERED IT TO 3.9. REPLACED STARTER VALVE.

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