# SDR AALA201904129004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 11, 2019
- Submitted: April 12, 2019
- Operation: Air carrier
- Aircraft: [N755US](https://openairdocs.org/aircraft/N755US), registered now
- Make and model: Airbus A319-112
- Registry model: [Airbus A319-112](https://openairdocs.org/model/airbus-industrie-a319-112) (OpenAirDocs)
- Aircraft serial: 1331
- Aircraft time: 44,376 hours, 31,765 cycles
- Engine: Cfmint CFM565B6P
- Engine time: 51,017 hours, 26,797 cycles
- System (JASC): [7532 · Compressor Bleed Valve](https://openairdocs.org/jasc/7532)
- Part: Bleed Valve
- Part number: 1216648
- Part serial: YG1062334
- Condition: Defective
- Location: Nr 1 Engine
- Part time: 43,446 hours, 21,884 cycles
- Stage of operation: DE
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201904129004

## Discrepancy

AIRCRAFT WAS GROUNDED: PILOT REPORTS DURING DESCENT ENGINE 1 COMPRESSOR VANE ECAM MESSAGE. MAINTENANCE MOTORED #1 ENGINE IAW AMM 75-30-00-810-837-A, NO FAULTS FOUND. MAINTENANCE ACCOMPLISHED TROUBLESHOOTING IAW TSM 75-30-00-810 AND FOUND DEFECTIVE #1 ENGINE VARIABLE BLEED VALVE SLAVE ACTUATOR AT THE 6:00 POSITION. FURTHER INVESTIGATION FOUND ENGINE #1 INBOARD LOWER VARIABLE BLEED VALVE DOOR OPEN WITH ALL OTHER DOORS CLOSED. REMOVED AND REPLACED THE #1 ENGINE VARIABLE BLEED VALVE DOOR BALLSCREW SLAVE ACTUATOR IAW AMM 75-31-60-400.

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