# SDR IPXA2025071047769

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 10, 2025
- Submitted: July 10, 2025
- Operation: Air carrier
- Aircraft: [N390UP](https://openairdocs.org/aircraft/N390UP), registered now
- Make and model: Boeing 767-300
- Registry model: [Boeing 767-300](https://openairdocs.org/model/boeing-767-300) (OpenAirDocs)
- Aircraft serial: 67979
- Aircraft time: 70 hours, 37 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Packing
- Part number: NAS161212
- Condition: Leaking
- Location: Hyd System
- Stage of operation: DE
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2025071047769

## Discrepancy

C HYD QTY EICAS DECREASING RESERVIOR QTY. OBSERVED UPON DESCENT AND ARRIVAL C HYD PRESS EICAS QRH PROCEDURES FOLLOWED INCLUDING ALT FLAP AND GEAT EXTENSION.  FOUND PRESSURE OUTLET UNION PACKING DAMAGED/TORN. REPLACED PACKING AND UNION IAW AMM 29-11-19 AND AMM 20-11-00. CLEANED THE AREA IAW AMM 12-25-01.  C/OUT OPS CHK OF CENTER HYD SYS IAW AMM 29-11-00, OPS CHK SATISFACTORY. C/OUT CENTER SYS EXTERNAL LEAK CHK IAW AMM 29-11-00, NO LEAK FOUND. SATISFACTORY. A/C OK FOR SERVICE.

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