# SDR AALA202010209016

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 18, 2020
- Submitted: October 22, 2020
- Operation: Air carrier
- Aircraft: [N740UW](https://openairdocs.org/aircraft/N740UW), registered now
- Make and model: Airbus A319-112
- Registry model: [Airbus A319-112](https://openairdocs.org/model/airbus-industrie-a319-112) (OpenAirDocs)
- Aircraft serial: 1265
- Aircraft time: 53,769 hours, 32,585 cycles
- Engine: Cfmint CFM565B6
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Check Valve
- Part number: 2293B020000
- Part serial: 10215
- Condition: Out Of Tolerance
- Location: Zone 400 - Nac/P
- Part time: 47,811 hours, 20,310 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202010209016

## Discrepancy

AIRCRAFT WAS GROUNDED.  AT CRUISE, FL 280, WITH REDUCTION OF POWER, RECEIVED MULTIPLE (2) COMPRESSOR/ENGINE STALLS WITH SELF RECOVERY.  MOMENTARY ECAM (LEFT ENGINE) THAT SELF CLEARED.  ACCOMPLISHED BORESCOPE ON NR 1 ENGINE WITH NO DEFECTS NOTED.  MAINTENANCE FOUND THE IP CHECK VALVE ON NR 1 ENGINE BUSHING OUT OF TOLERANCE AND REPLACED THE IP CHECK VALVE.  A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED, PER AMM 36-11-41.  SUPPLEMENTAL REPORT: ADDED TIMES AND CYCLES FOR AIRCRAFT TO SECTION 3.

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