# SDR U2RA2021040200010

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 1, 2021
- Submitted: April 2, 2021
- Operation: Air carrier
- Aircraft: [N919CA](https://openairdocs.org/aircraft/N919CA), registered now
- Make and model: Boeing 747428
- Aircraft serial: 25302
- Aircraft time: 102,357 hours, 15,234 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Hydraulic Line
- Condition: Cracked
- Location: Nr 1 Hyd System
- Stage of operation: TX
- How discovered: O
- Nature of condition: K, B
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/U2RA2021040200010

## Discrepancy

REFERENCE NATIONAL AIRLINES AML 44070-1:  DURING TAXI, SMELLED BAD HYDRAULIC ODOR AND RETURNED TO GATE.  FOUND HYDRAULIC LEAK IN SYSTEM #1 HYDRAULIC LINE, LEFT SIDE FUSELAGE AT BS 900.  REPLACED SUBJECT HYDRAULIC LINE WITH TEMP "FLEXIBLE" HYDRAULIC LINE IAW B747-400 AMM 20-11-05.  NO LEAKS NOTED.

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