# SDR AALA2018092079030

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 28, 2018
- Submitted: September 21, 2018
- Operation: Air carrier
- Aircraft: [N561UW](https://openairdocs.org/aircraft/N561UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 5317
- Aircraft time: 20,176 hours, 8,016 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Threshold
- Condition: Corroded
- Location: Frame 68
- 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/AALA2018092079030

## Discrepancy

CORROSION ON THE L4 DOOR THRESHOLD PLATE AT THE INBOARD GIRT BAR ATTACH POINT, FRAME 68, Y1137.  REPAIRED THE THRESHOLD PLATE IAW  SRM 53-41-14-300-001, REPAIR PRINCIPLE 7.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain, except the copies of manufacturers’ service documents, which belong to their rights holders.