# SDR AALA202510300050

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 27, 2025
- Submitted: October 30, 2025
- Operation: Air carrier
- Aircraft: [N329SL](https://openairdocs.org/aircraft/N329SL), registered now
- Make and model: Boeing 737-8
- Registry model: [Boeing 737-8](https://openairdocs.org/model/boeing-737-8) (OpenAirDocs)
- Aircraft serial: 44479
- Aircraft time: 15,061 hours, 5,673 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Controller
- Condition: Failed
- Location: Zone 100
- Stage of operation: CR
- How discovered: O
- Nature of condition: G, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202510300050

## Discrepancy

AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: BLLED LIGHT APPEARED FOR LEFT ENGINE BLLED AIR, DIZZINESS AND POSSIBLE HYPOXIA. AIRCRAFT DIVERTED TO AND LANDED SAFELY AT ABQ. REPLACED LEFT HAND ENGINE PRSOV-PRESSURE REGULATOR AND SHUTOFF VALVE (AALA202510309430) AND FAN AIR MODULATING VALVE (AALA202510307135). PER AMM 36-11-04 AND 36-12-03. REMOVE AND REPLACED OVERHEAD P5-10 PANEL (AALA202510306342), PER AMM 21-51-65. REMOVE AND REPLACED (IASC)-LEFT (AALA202510300050), PER AMM 21-62-22. PERFORMED APU, PACK, AND ENGINE RUN SUCCESSFULLY. OPERATIONAL CHECK GOOD NO FAULTS ALSO PERFORMED PRESSURIZATION TEST REF AMM 05-51-91, OPERATIONAL CHECK GOOD.

---
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.