# SDR CALA2023021000402

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 9, 2023
- Submitted: February 10, 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): [5700 · Wing Structure](https://openairdocs.org/jasc/5700)
- Part: Angle
- Part number: 111A2501
- Condition: Cracked
- Location: Sta 663.75
- 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/CALA2023021000402

## 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 PER REF.B737 SRM 57-10-10- 2R-5,REPAIR 5,FIG.202,DETAIL "D".REF. AAR N/R:9515625 WORK ACCOMPLISHED BY:V924471.INSPECTED BY Q.C:V891470

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.