# SDR DU4R2007160

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 16, 2007
- Submitted: July 26, 2007
- 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: N639DL
- Make and model: Boeing 757232
- Aircraft serial: 23993
- Aircraft time: 63,747 hours, 29,972 cycles
- System (JASC): [5753 · Trailing Edge Flaps](https://openairdocs.org/jasc/5753)
- Part: Rib
- Condition: Cracked
- Location: Te Flap
- Component: Flap Assy, Boeing
- Component part number: 113N20011
- 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/DU4R2007160

## Discrepancy

FOUND LT INBB FLAP MAIN FLAP RIB (3RD FROM I/B END) CRACKED.  REPAIRED BY REMOVING RIB AND INSTALLING RIB FABRICATED (ON N/R 25000)16.780 BY 8.550 FROM 7050-T7457 IAW B757 SRM 51-40-02, BOEING DWG NR 113N2352 REV C, AND B757 SRM 51-20-01.

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