# SDR J7SA01082011001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 8, 2011
- Submitted: January 11, 2011
- Operation: Air carrier
- Aircraft: [N526FX](https://openairdocs.org/aircraft/N526FX), registered now
- Make and model: Bombdr BD1001A10
- Aircraft serial: 20118
- Aircraft time: 4,230 hours, 2,579 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: O-Ring
- Part number: NAS16128NAS16110
- Condition: Deformed
- Location: Hyd System
- Part time: 4,230 hours, 2,579 cycles
- 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/J7SA01082011001

## Discrepancy

AFTER DEPARTURE, RT (NR2) "PRESSURE LOW" CAS MESSAGE POSTED WHILE CLIMBING THROUGH FL200. HYD SYNOPTIC PAGE SHOWED PRESSURE DROPPING TO O PSI WITHIN 1 MINUTE AND 0 PERCENT QUANTITY FOR NR 2 HYD SYS.  CREW DECLARED EMERGENCY AND ACFT WAS DIVERTED AND HAD AN UNEVENTFUL LANDING AND TAXI.  VISUAL INSP OF NR2 HYD SYS REVEALED THAT LEAK EMANATED FROM O-RINGS LOCATED IN THE DIFFERENTIAL PRESSURE INDICATOR. O-RINGS WERE REPLACED, SYS TESTED WITH NO FURTHER DEFECTS NOTED.

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