# SDR SWAA2021092018049

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 15, 2021
- Submitted: September 20, 2021
- Operation: Air carrier
- Aircraft: [N446WN](https://openairdocs.org/aircraft/N446WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29842
- Aircraft time: 58,494 hours, 34,404 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Filter
- Condition: Faulted
- Location: Hyd System
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2021092018049

## Discrepancy

LOSS OF HYDRAULIC SYSTEM A WITH LOW PRESS LIGHT ILLUMINATED ON EDP #1. ; / [01] REMOVED AND REPLACED A ELECTRIC HYDRAULIC PUMP ACOUSTIC FILTER AND OPS CHECK GOOD REF AMM 29-11-27. SERVICED A SYSTEM HYD QTY TO FULL REF AMM 12-12-00. RAN #1 ENGINE AND ALL INDICATIONS NORMAL REF AMM 72-00-00.

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