# SDR CALA2023021300424

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 13, 2023
- Submitted: February 13, 2023
- Operation: Air carrier
- Aircraft: [N64809](https://openairdocs.org/aircraft/N64809), registered now
- Make and model: Boeing 737-900ER
- Registry model: [Boeing 737-900ER](https://openairdocs.org/model/boeing-737-900er) (OpenAirDocs)
- Aircraft serial: 42821
- Aircraft time: 29,734 hours, 10,650 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Unknown
- Part number: NA
- Condition: Cracked
- Location: Sta663.75/Rbl6
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2023021300424

## Discrepancy

LOWER FUS.CENTER WING BOX CTR BULKHEAD VAPOR BARRIER UPPER CHORD  ATTACHED ANGLE CRACKED @ APPROX. RBL6 , STA 663.75 REF. AAR N/R:9515625 REPAIRED WING CENTER BULKHEAD VAPOR BARRIER UPPER CHORD ATTACHED ANGLE RBL 6, STA 663.75.

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