# SDR SWAA2025022498836

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 22, 2025
- Submitted: February 24, 2025
- Operation: Air carrier
- Aircraft: [N8683D](https://openairdocs.org/aircraft/N8683D), registered now
- Make and model: Boeing 737-8H4
- Registry model: [Boeing 737-8H4](https://openairdocs.org/model/boeing-737-8h4) (OpenAirDocs)
- Aircraft serial: 36738
- Aircraft time: 30,071 hours, 14,872 cycles
- System (JASC): [2913 · Hydraulic Pump (Electric/Engine), Main](https://openairdocs.org/jasc/2913)
- Part: Pump
- Condition: Failed
- Location: Hyd System
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2025022498836

## Discrepancy

SYS A HYDRAULIC LOSS AFTER GEAR RETRACTION<[01] REPLACED #1 ENG CASE DRAIN FILTER AND ?A? ELEC CASE DRAIN FILTER; NO DEBRIS FOUND IN EITHER FILTER. REPLACED#1 ENG DRIVEN HYDRAULIC PUMP IAW AMM 29-11-11. RAN ENGINE TWICE; OPS AND LEAKS CHECKS GOOD. ALSO REF AMM 29-11-41AND 29-11-51 FOR CASE DRAIN FILTERS.

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