# SDR AALA202309188946

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 14, 2023
- Submitted: September 18, 2023
- Operation: Air carrier
- Aircraft: [N145AN](https://openairdocs.org/aircraft/N145AN), registered now
- Make and model: Airbus A320*
- Aircraft serial: 6783
- Aircraft time: 24,287 hours, 9,305 cycles
- System (JASC): [3620 · Pneumatic Indicating System](https://openairdocs.org/jasc/3620)
- Part: Tube
- Part number: 556115306001
- Condition: Faulty
- Location: Zone 400 - Nac/P
- Stage of operation: CL
- How discovered: V
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202309188946

## Discrepancy

AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO SFO DUE TO LEFT ENGINE EPR FLUCTUATION. AIRCRAFT LANDED SAFELY AT SFO WITHOUT FURTHER INCIDENT. **SUPPLEMENTAL REPORT FOR AALA202309158419: MAINTENANCE REPLACED LEFT ENGINE BLEED AIR OVER PRESSURE VALVE PER AMM 36-11-53 (AALA202309158419). REPLACED LEFT ENGINE BLEED AIR PRESSURE REGULATOR VALVE PRESSURE INDICATING TUBE PER AMM 36-11-52 (AALA202309178946). ACCOMPLISHED SATISFACTORY OPERATIONAL CHECKS.** (CLOSE)

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