# SDR CALA2026042415689

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 10, 2026
- Submitted: April 24, 2026
- Operation: Air carrier
- Aircraft: [N15710](https://openairdocs.org/aircraft/N15710), registered now
- Make and model: Boeing 737724
- Aircraft serial: 28780
- Aircraft time: 83,332 hours, 31,199 cycles
- System (JASC): [5312 · Fuselage Main, Bulkhead](https://openairdocs.org/jasc/5312)
- Part: Vapor Barrier
- Part number: 111A11413
- Condition: Cracked
- Location: Zone 100
- 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/CALA2026042415689

## Discrepancy

FOUND CRACK  R/H VAPOR BARRIER WING CTR SECTION REAR SPAR  @ RBL 5 STA 663.75 I/B OF RAM AIR EXIT EXHAUST INSTALLED REPAIR PATCH WHERE CRACK WAS FOUND AT R/H VAPOR BARRIER WING CTR SECTION REAR SPAR @ RBL5 STA 663.75 I/B OF RAM AIR EXIT EXHAUST. AS PER SRM-57-10-10-2R-2 PARAGRAPH 6 FIGURE 202 TABLE 215.

---
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.