# SDR CALA2015022493173

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 23, 2015
- Submitted: February 24, 2015
- Operation: Air carrier
- Aircraft: N118UA
- Make and model: Boeing 747422
- Aircraft serial: 28811
- Aircraft time: 64,243 hours, 7,486 cycles
- Engine: Pwa PW4056
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Hydraulic Line
- Condition: Punctured
- Location: Hydraulic Sys
- Stage of operation: CR
- How discovered: O
- Nature of condition: K
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2015022493173

## Discrepancy

EXPERIENCED COMPLETE LOSS OF NR 1 HYD SYS PRIOR TO DESCENT.  FOUND SYS 1 RETURN LINE WITH A PUNCTURE, IPC REFERENCE 29-11-60-001J, ITEM 270.  R & R NR 1 HYD SYS RETURN LINE.  SYS OPERATIONS & LEAK CHECKED OK.

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