# SDR SWAA2023080484875

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 1, 2023
- Submitted: August 4, 2023
- Operation: Air carrier
- Aircraft: [N258WN](https://openairdocs.org/aircraft/N258WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32516
- Aircraft time: 55,971 hours, 33,514 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Hydraulic System
- Part number: UNKNOWN
- Condition: Failed
- Location: Zn 100 Fus Lower
- Stage of operation: TO
- How discovered: 9
- Nature of condition: K, O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2023080484875

## Discrepancy

AT ROTATION WE HAD INDICATIONS OF A BLOWN TIRE. WE DID NOT RAISE THE LANDING GEAR. WE DID NOT HAVE ANY OTHER INDICATIONS OTHER THAN ANTI-SKID INOP. WHILE RETURNING TO THE FIELD WE LOST THE #1 ENG HYD PUMP. PRESSURE NORMAL BUT QUANTITY WAS LOW AND DECREASING. SUBSEQUENTLY LOST ALL OF SYSTEM A HYD. ON LANDING ROLL WE LOST SYS B HYD.<[01] REF WO 58753274 FOR ALL MX PERFORMED.

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