# SDR AALA202504020616

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 30, 2025
- Submitted: April 2, 2025
- Operation: Air carrier
- Aircraft: [N173US](https://openairdocs.org/aircraft/N173US), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 1481
- Aircraft time: 77,512 hours, 29,945 cycles
- System (JASC): [5710 · Wing Main, Frame Structure](https://openairdocs.org/jasc/5710)
- Part: Plate
- Condition: Worn
- Location: Zone 500
- 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/AALA202504020616

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE: LEFT WING SKIN LOWER SURFACE PYLON MOUNTING PLATE BETWEEN RIBS 7 AND 8 HAS ELONGATED / WORN SYSTEM TUBING FEED-THROUGH HOLES. REPLACED MOUNTING PLATE PER SRM 57-21-11-300-005.

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