# SDR SWAA011203

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 21, 2001
- Submitted: April 30, 2001
- Operation: Air carrier
- Aircraft: 073SW
- Make and model: Boeing 737-2H4
- Registry model: [Boeing 737-2H4](https://openairdocs.org/model/boeing-737-2h4) (OpenAirDocs)
- Aircraft serial: 22673
- Aircraft time: 61,742 hours, 67,111 cycles
- System (JASC): [2913 · Hydraulic Pump (Electric/Engine), Main](https://openairdocs.org/jasc/2913)
- Part: Pump
- Part number: 6915863
- Condition: Vibrates
- Location: Nr 1 Engine
- Stage of operation: CL
- How discovered: O
- Nature of condition: E
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA011203

## Discrepancy

AIR TURNBACK, DURING CLIMB OUT DETECTED ABNORMAL ENGINE VIBRATION FROM NR 1 ENGINE, ABOVE 1.7 EPR. R&R NR 1 ENG HYD PUMP & CASE DRAIN FILTER PER MM.  OPS & LEAK CHECK GOOD.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.