# SDR CALA2023032700877

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 25, 2023
- Submitted: March 27, 2023
- Operation: Air carrier
- Aircraft: [N69818](https://openairdocs.org/aircraft/N69818), registered now
- Make and model: Boeing 737-900ER
- Registry model: [Boeing 737-900ER](https://openairdocs.org/model/boeing-737-900er) (OpenAirDocs)
- Aircraft serial: 42177
- Aircraft time: 29,611 hours, 10,745 cycles
- System (JASC): [5710 · Wing Main, Frame Structure](https://openairdocs.org/jasc/5710)
- Part: Unknown
- Part number: 111A2501
- Condition: Cracked
- Location: Sta663.75/Lbl7
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2023032700877

## Discrepancy

STA. 663.75 LEFT LOWER CHORD APPROX. LBL 7, CRACK FOUND AT SECOND INBOARD TO OUTBOARD FASTENER HOLE AT 6 O''CLOCK POSITION. (REF AAR NR 9670115) REPAIRED AREA AT STA 663.75 L/H LOWER CHORD IN RF B737-900 SRM 57-10-10-2R-5 (SHEET 6). WORK ACCOMPLISHED BY V896697.

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