# SDR QXEA2026041500088

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 15, 2026
- Submitted: April 15, 2026
- Operation: Air carrier
- Aircraft: [N638QX](https://openairdocs.org/aircraft/N638QX), registered now
- Make and model: Emb ERJ 170-200 LR
- Registry model: [EMB ERJ 170-200 LR](https://openairdocs.org/model/embraer-s-a-erj-170-200-lr) (OpenAirDocs)
- Aircraft serial: 17000757
- Aircraft time: 19,533 hours, 13,684 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: O-Ring
- Part number: NAS16126
- Condition: Leaking
- Location: Hyd System
- Stage of operation: CR
- 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/QXEA2026041500088

## Discrepancy

DURING CRUISE, HYD 1 LO QTY EICAS MSG. QAUNTITY WAS 16%,  AFTER LANDING QAUNTITY WAS 2% , BUT CAME UP TO 4% AFTER PARKING. REMOVED FROM SERVICE. INSPECTED AND FOUND HYD FLUID ALL AROUND INSIDE OF #1 HYD PUMP AND RESIVOUR  AREA, SERVICED #1 HYDRAULIC SYSTEM TO 40% INSPECTED AND FOUND HYD SYS #1 TO BE LEAKING FROM ACMP PRESSURE ATTENUATOR. REMOVED AND REPLACED HYD SYS #1 ATTENUATOR O-RING. REF E175 AMM 29-11-29-000/400-801-A. OPS TEST GOOD WITH NO LEAKS NOTED. RETURNED TO SERVICE.

---
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.