# SDR DU4R2020061400042

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 14, 2020
- Submitted: June 14, 2020
- Operation: Air carrier
- Filed by: [AAR Aircraft Services, LLC, repair station DU4R141M](https://openairdocs.org/faa-repair-station/DU4R141M/aar-aircraft-services-llc.md) (OpenAirDocs)
- Aircraft: [N403YK](https://openairdocs.org/aircraft/N403YK), registered now
- Make and model: Boeing 737436
- Aircraft serial: 25842
- Aircraft time: 56,726 hours, 38,951 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Structure
- Condition: Cracked
- Location: Bs 727
- Stage of operation: IN
- How discovered: E
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DU4R2020061400042

## Discrepancy

AD2016-13-11 RELATED, UPON FASTENER REMOVAL TO ACCOMPLISH PREVENTIVE MOD AT BS727 FOUND CRACKS GOUGES AND OUT OF ROUND HOLES AT LBL 24.82, LBL 45.57,RBL 24.82 AND RBL 45.57 TOTALING 10 EA HOLES

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