# SDR DALA2019021901037

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 18, 2019
- Submitted: February 19, 2019
- Operation: Air carrier
- Aircraft: [N389DA](https://openairdocs.org/aircraft/N389DA), registered now
- Make and model: Boeing 737832
- Aircraft serial: 30376
- Aircraft time: 61,027 hours, 23,937 cycles
- Engine: Cfmint CFM567B262
- System (JASC): [7532 · Compressor Bleed Valve](https://openairdocs.org/jasc/7532)
- Part: Bleed Valve
- Condition: Failed
- Location: Lt Engine
- 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/DALA2019021901037

## Discrepancy

SHIP 3719 - ATB - DURING FLIGHT AT FL 360 THE CABIN ALTITUDE LIGHT ILLUMINATED. LEFT DUCT PRESSURE 10, RIGHT 40. AIRCRAFT RETURNED TO MCO.  PERFORMED LEFT ENGINE PNEUMATIC HEALTH CHECK. BAR FAILED. REPLACED #1 BLEED AIR REGULATOR. PERFORMED SINGLE PACK CONFIDENCE CHECK AND LEAK CHECK ON BOTH PACKS. CHECKS GOOD.

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