# SDR YENA2023030900219

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 7, 2023
- Submitted: March 9, 2023
- Operation: Air carrier
- Aircraft: [N980JT](https://openairdocs.org/aircraft/N980JT), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 07631
- Aircraft time: 23,418 hours, 4,587 cycles
- System (JASC): [5710 · Wing Main, Frame Structure](https://openairdocs.org/jasc/5710)
- Part: None
- Condition: None
- 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/YENA2023030900219

## Discrepancy

DURING HEAVY MAINTENANCE: CORROSION LOWER SURFACE BOTTOM SKIN BTW RIB 18 TO RIB 19 ON LH WING; REF AEROMAN NR 2023-120178 WO 2023 87/1 PERFORMED REPAIR ON LOWER SURFACE BOTTOM SKIN BTW RIB 18 TO RIB 19 AT STRINGER 11 ON LH WING AS PER EA # 57-3003-23 PART#1 AND EC # A23-166-01, AIRBUS APPROVED THE REPAIR WITH A REPAIR DESIGN LIFE LIMITATION BASED ON A PRELIMINARY FATIGUE AND DAMAGE TOLERANCE EVALUATION. THIS ALLOWS THE AIRCRAFT TO RETURN TO SERVICE. THE MAXIMUM PERIOD IS CURRENTLY SET TO SIX MONTHS. LIMITATIONS ARE FROM THE TIME OF SOLUTION EMBODIMENT AS PER RDAF 81185067/003/2023#A. TOOL USED ELECTRONIC CALIPER P/N: 500-197-30 S/N A18109103 DUE DATE: NOV-05-2023, CALIPER P/N: 700-113-10, S/N: 0033158, DUE DATE: NOV-08-2023, ULTRASONIC EQUIPMENT, P/N: 45MG, S/N: 130063701, DUE DATE: JUN-16-2023, EDDY CURRENT EQUIPMENT, P/N: NORTEC 500D, S/N: N500X12101V022235, DUE DATE: AUG-03-2023, ULTRASONIC EQUIPMENT PN: 45MG, SN: 221861811, DUE DATE: NOV 08 2023, SMALL HOLE GAUGES PN:154-901, SN: AE-412976, DUE DATE SEP-05-2023, CALIPER PN:500-196-30, SN: A20226522, DUE DATE SEP-12-2023, SCALE P/N: CL5000; S/N: AE-37099; DUE DATE: AUG-22-2023 ACCOMPLISHED BY AEROMAN TECH 8612111.

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