# SDR U5QA202608310179

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 31, 2026
- Submitted: September 9, 2026
- Operation: Air carrier
- Aircraft: [N504VJ](https://openairdocs.org/aircraft/N504VJ), registered now
- Make and model: Bombdr BD7001A11
- Aircraft serial: 9566
- Aircraft time: 9,667 hours, 3,751 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Hydraulic Line
- Part number: GD478110211
- Condition: Cracked
- Location: Zone 400
- Stage of operation: DE
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/U5QA202608310179

## Discrepancy

NR 1 HYD LEAK IN AIR.  UNEVENTFUL LANDING.  HYD FLUID NOTICED ON BOTTOM OF AFT FUSELAGE.  COMPLIED WITH CAMP CARD 20260831-23. INSPECTED AREAS WITH HYD FLUID & FOLLOWED TO AFT EQUIP BAY.  LARGEST CONCENTRATION OF FLUID AROUND  LT HYD FILTER MANIFOLD. TORQUED HYD LINES IN AREA IAW SPM 20-30-00-400-801. CLEANED IAW SPM 51–25–00–110–801 & SERVICED HYD SYS NR 1 IAW  AMM 12-12-00-611-801. PRESSURIZED SYS NR 1 IAW AMM 29-10-00-862-801. NO LEAK NOTED. PRESSURIZED EDP IAW AMM 29-12-01-710-801.  FOUND LEAK AT LT FIREWALL SHUTOFF VALVE. REPLACED LT  SHUTOFF VALVE IAW AMM 29-12-33-000-801, & 29-12-33-400-801.  OPS TESTED GOOD, NARROWED DOWN LEAK FROM CRACK ON LT PRESS LINE AFT OF SHUTOFF VALVE.  REPLACED HYD LINE IAW SPM 20-30-00-910-807, & SPM 20-30-00-400-801. NO LEAKS NOTED.  REINSTALLED ORIGINAL SHUTOFF VALVE IAW AMM 29-12-33-000-801, & 29-12-33-400-801. OPS & LEAK TEST GOOD. HYD SYS NR 1 SERVICED IAW AMM 12-12-00-611-801.

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