# SDR ASAA2023123147115

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 31, 2023
- Submitted: January 4, 2024
- Operation: Air carrier
- Aircraft: [N568AS](https://openairdocs.org/aircraft/N568AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35183
- Aircraft time: 59,452 hours, 17,795 cycles
- System (JASC): [2914 · Hydraulic Handpump, Main](https://openairdocs.org/jasc/2914)
- Part: Pump
- Part number: 651782121
- Part serial: A0032736
- Condition: Failed
- Location: Hyd System
- Part time: 59,458 hours, 17,796 cycles
- Stage of operation: NR
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023123147115

## Discrepancy

CREW REPORTS SYS A HYD PRESSURE SHOWS 370 PSI WITH PUMP SWITCH ON. GROUNDED - YES. REMOVED AND REPLACED SYSTEM A MODULAR ASSY PER AMM 29-11-71. VERIFIED NO PRESSURE DROPPED WITH HYDRAULIC LOAD. PERFORMED LEAK CHECK. NO DEFECTS NOTED. LEAK CHECK GOOD. FINAL SYS A PRESSURE 3020. PERFORMED EMDP INSTALLATION TEST PER AMM 29-11-21. ALL CHECKS GOOD, NO DEFECTS OR OTHER DISCREPANCIES NOTED.

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