# SDR AALA202503103157

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 25, 2025
- Submitted: March 10, 2025
- Operation: Air carrier
- Aircraft: [N558UW](https://openairdocs.org/aircraft/N558UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 5282
- Aircraft time: 37,973 hours, 15,774 cycles
- Engine: Iae V2533A5
- Engine time: 20,945 hours, 8,507 cycles
- System (JASC): [7500 · Engine Bleed Air System](https://openairdocs.org/jasc/7500)
- Part: Solenoid
- Part number: AA105100
- Part serial: UCB331
- Condition: Defective
- Location: Nr 2 Engine
- Part time: 20,945 hours, 8,507 cycles
- Component: Engine, Iae, V2533A5
- Component part number: V2533A5
- Stage of operation: CR
- How discovered: O
- Nature of condition: E, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202503103157

## Discrepancy

AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT DIVERTED TO SLC DUE TO THE FLIGHT CREW REPORTING THAT WHILE LEVEL AT FL350 LOUD BANG FOLLOWED BY AIRCRAFT SHUTTER AND ENGINE 2 STALL ECAM. ENGINE RESTARTED AND OPERATED NORMALLY FOR REMAINDER OF FLIGHT TO DIVERSION AIRPORT. THE AIRCRAFT LANDED SAFELY AT SLC AND TAXIED TO THE GATE UNDER ITS OWN POWER. A REVIEW OF THE FDR DATA SHOWED THE ENGINE STALLED AND DID RECOVER WITHIN 11 SECONDS. MAINTENANCE ACCOMPLISHED A BORESCOPE INSPECTION OF THE #2 ENGINE WITH NO ISSUES NOTED. **ORIGINAL REPORT WAS AALA202502261840** MAINTENANCE REPLACED ALL THREE 7TH STAGE BLEED VALVES (POSITION A: AALA202502261840, B: AALA202503106976 AND C: AALA202503108990) AND SOLENOIDS (POSITION A: AALA202503109765, B: AALA202503103157 AND C: AALA202503103857) ON #2 ENGINE PER AMM 75-32-52 AND 75-32-21. MAINTENANCE ALSO REPLACED THE 10TH STAGE BLEED VALVE (AALA202503104852) AND SOLENOID (AALA202503102662) ON #2 ENGINE PER AMM 75-32-54 AND 75-32-53. IN ADDITION, THE VSV ACTUATOR WAS REPLACED ON THE #2 ENGINE PER TASK CARD 26T40075005. (AALA202503107470). A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED WITH NO ISSUES NOTED.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.