# SDR ASAA2021060235012

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 2, 2021
- Submitted: June 4, 2021
- Operation: Air carrier
- Aircraft: [N506AS](https://openairdocs.org/aircraft/N506AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35690
- Aircraft time: 47,313 hours, 14,325 cycles
- System (JASC): [7500 · Engine Bleed Air System](https://openairdocs.org/jasc/7500)
- Part: Regulator
- Part number: 1074926
- Part serial: 961C
- Condition: Inoperative
- Location: Nr 1 Bleed Sys
- Part time: 31,024 hours, 11,554 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2021060235012

## Discrepancy

AFTER ENGINE START LH BLEED DUCT HAD ZERO PRESSURE WITH BLEED SWITCHON. GROUNDED - YES. REMOVE BLEED AIR REGULATOR REF B737-800 AMM TASK 36-11-03-000-801. INSTALL BLEED AIR REGULATOR REF AMM TASK 36-11-03-400-801 LEAK AND OPS CK OK.

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