# SDR J7SA2026080400506

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 31, 2026
- Submitted: August 5, 2026
- Operation: Air carrier
- Aircraft: [N454FX](https://openairdocs.org/aircraft/N454FX), registered now
- Make and model: Gulstm GIVXG450
- Aircraft serial: 4339
- Aircraft time: 10,392 hours, 5,436 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Hydraulic Line
- Part number: 1159H4020085
- Condition: Leaking
- Location: Zone 100
- Stage of operation: CL
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/J7SA2026080400506

## Discrepancy

AIR TURN BACK DUE TO LH HYD FAIL CAS AFTER TAKEOFF FROM KAUS, WITH ALL LEFT SYSTEM QUANTITY LOST; A LARGE AMOUNT OF HYDRAULIC FLUID WAS FOUND LEAKING ON THE GROUND AFTER LANDING. REPLACED RH SIDE STAY ACTUATOR RETURN LINE HOSE IAW GULFSTREAM G450 AMM 32-14-01. LEAK CHECK GOOD, NO DEFECTS NOTED.

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