# SDR AALA201912039005

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 2, 2019
- Submitted: December 3, 2019
- Operation: Air carrier
- Aircraft: [N755AN](https://openairdocs.org/aircraft/N755AN), registered now
- Make and model: Boeing 777223
- Aircraft serial: 30263
- Aircraft time: 74,587 hours, 9,355 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Line
- Part number: 272W729023
- Condition: Cracked
- Location: Hyd System
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201912039005

## Discrepancy

AIRCRAFT WAS GROUNDED: HYD RETURN CENTER LINE SYS ACT CPN 272W7290-23 REF IPC 27-21-72-01, PART NUMBER 145 HAS A HARDLINE CRACK.  REPLACED TUBE ASSY RETURN LINE FOR CENTER HYD SYS HYD IAW AMM 20-10-09, OPS CHECK NORMAL NO LEAKS AT THIS TIME.

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