# SDR ASAA2023070743930

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 7, 2023
- Submitted: July 11, 2023
- Operation: Air carrier
- Aircraft: [N495AS](https://openairdocs.org/aircraft/N495AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41728
- Aircraft time: 27,399 hours, 8,546 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Magnetic Seal
- Part number: 3051023030
- Condition: Leaking
- Location: #1 Engine
- Stage of operation: IN
- How discovered: V
- Nature of condition: K
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023070743930

## Discrepancy

REMOVED ENGINE DRIVEN HYD PUMP FOR SEAL LEAK PER TSR714593. FOUND HYD PUMP SHAFT SEAL LEAKING. GROUNDED - YES. REMOVED AND INSTALLED #1 ENG EDP MAGNETIC SEAL REF 72-60-00 AMM. REPLACED #1 ENG EDP REF AMM 29-11-11. PERFORMED EDP INSTALL TEST NO DEFECTS NOTED. NO LEAKS FOUND. THIS ACTION CLOSES TSR714593.

---
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.