# SDR AALA201910179023

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 15, 2019
- Submitted: October 17, 2019
- Operation: Air carrier
- Aircraft: [N521UW](https://openairdocs.org/aircraft/N521UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 3944
- Aircraft time: 37,219 hours, 13,432 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Line
- Condition: Kinked
- Location: Hyd System
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201910179023

## Discrepancy

AIRCRAFT WAS GROUNDED: MAINTENANCE REPORTS LT MLG REAR SPAR, BTWN RIB 1, 2 HYD RETURN LINE KINKED. FOUND DURING INSPECTION AFTER TREAD THROW IAW AMM 05-51-15. MAINTENANCE REMOVED AND REPLACED L/H MLG WW HYD RETURN LINE IAW AMM 20-23-11.

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