# SDR ASAA2022061238634

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 12, 2022
- Submitted: June 14, 2022
- Operation: Air carrier
- Aircraft: [N588AS](https://openairdocs.org/aircraft/N588AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35685
- Aircraft time: 51,589 hours, 15,307 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Fcu
- Part number: 3966081
- Part serial: 2397
- Condition: Inoperative
- Location: Left Ecs Bay
- Part time: 52,563 hours, 16,578 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: O
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022061238634

## Discrepancy

ON TAXI OUT FOR TAKEOFF VERY LOUD AIR RUSHING SOUND AFTER ADVANCING #1 THRUST LEVER PAST 25% N1. ALL C/B'S CHECKED IN. GROUNDED - YES. REMOVED AND REPLACED L/H FLOW CONTROL AND SHUTOFF VALVE IN REF TO B737-800 AMM 21-51-01. RAN ENGINES WITH NO ABNORMAL NOISES.

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