# SDR SWAA2026011260498

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 11, 2026
- Submitted: January 12, 2026
- Operation: Air carrier
- Aircraft: [N438WN](https://openairdocs.org/aircraft/N438WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29833
- Aircraft time: 74,338 hours, 44,362 cycles
- System (JASC): [2913 · Hydraulic Pump (Electric/Engine), Main](https://openairdocs.org/jasc/2913)
- Part: Pump
- Condition: Faulted
- Location: Nr 1 Hyd Sys
- 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/SWAA2026011260498

## Discrepancy

NUMBERR 1 ELEC HYD PUMP OVERHEAT LIGHT ILLUMINATED.  PERFORMED QRH STEPS. APPROX 30 MINUTES LATER PILOTS NOTICED DROP WITH NR 1 HYD QTY OF 1% EVERY 15 SECOND AND PRESSURE DECREASING .  LANDING NORMAL.   R & R NR 1 ENG EDP PER AMM 29-11-11. R & R NR 1 ENG CASE DRAIN FILTER IAW AMM 29-11-51. SERVICED HYDRAULICS IAW AMM 12-12-00.

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