# SDR CALA2013091000650

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 10, 2013
- Submitted: September 10, 2013
- Operation: Air carrier
- Aircraft: [N13718](https://openairdocs.org/aircraft/N13718), registered now
- Make and model: Boeing 737724
- Aircraft serial: 28937
- Aircraft time: 48,912 hours, 16,485 cycles
- System (JASC): [5312 · Fuselage Main, Bulkhead](https://openairdocs.org/jasc/5312)
- Part: Bulkhead
- Part number: 111A1111
- Condition: Cracked
- Location: Fuselage
- 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/CALA2013091000650

## Discrepancy

CENTER WING BOX REAR SPAR VERTICAL PRESSURE WEB, HAS A CRACK BETWEEN WL200.6, WL192.0 RBL 31.83 & RBL 40.00 MARKED.  HFEC PERFORMED & VERIFIED IAW CARD SEQ443.  CUTOUT DAMAGED AREA & INSTALLED REPAIR DOUBLER, IAW SRM 57-1 0-10, REPAIR 3, ALTERNATIVE 1, STEPS A THRU O.

---
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.