# SDR HNAA2025050100295

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 30, 2025
- Submitted: May 2, 2025
- Operation: Air carrier
- Aircraft: [N640AE](https://openairdocs.org/aircraft/N640AE), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 145183
- Aircraft time: 53,823 hours, 51,375 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Check Valve
- Condition: Misinstalled
- Location: Hydraulic System
- Stage of operation: CL
- How discovered: O
- Nature of condition: W, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HNAA2025050100295

## Discrepancy

AFTER T/O LG LEVER DISAGREE. HANDLE SELECTED UP GEAR REMAINED DOWN   FACT  01MAY25  15:59  SBY  UPON INSPECTION OF #100 HYDRULIC ACCUMILATOR, FOUND T-FITTING CHECK VALVE BACKWARDS. REMOVED AND REPLACED O-RINGS AND INSTALLED CHECK VALVE IN THE CORRECT ORIENTATION IAW AMM 20-10-03. PERFORMED GEAR SWINGS IAW AMM 32-30-00. OPS AND LEAK CHECK GOOD

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