# SDR KCSA202609091204

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 9, 2026
- Submitted: September 9, 2026
- Operation: Air carrier
- Aircraft: [N713CK](https://openairdocs.org/aircraft/N713CK), registered now
- Make and model: Boeing 747-4B5F
- Registry model: [Boeing 747-4B5F](https://openairdocs.org/model/boeing-747-4b5f) (OpenAirDocs)
- Aircraft serial: 32808
- Aircraft time: 89,864 hours, 15,744 cycles
- System (JASC): [5311 · Fuselage Main, Frame](https://openairdocs.org/jasc/5311)
- Part: Frame
- Condition: Cracked
- Stage of operation: IN
- How discovered: E
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/KCSA202609091204

## Discrepancy

DURING EO 5312-21-02 OPEN HOLE HFEC INSPECTION, A CRACK SIGNAL INDICATION ON FRAME AT BS 860 RT 3 EA HOLE.

---
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.