# SDR CALA2026051116102

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 7, 2026
- Submitted: May 11, 2026
- Operation: Air carrier
- Aircraft: [N45440](https://openairdocs.org/aircraft/N45440), registered now
- Make and model: Boeing 737924ER
- Aircraft serial: 33535
- Aircraft time: 52,790 hours, 18,878 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Transition Panel
- Part number: 146A750253
- Condition: Corroded
- 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/CALA2026051116102

## Discrepancy

AFT CARGO COMP. LT TRANSITION PANEL UPPER SURFACE HAS CORROSION FROM STA 767-827.    AFT CARGO COMP. LH TRANSITION PANEL CORROSION.REMOVED AND REPLACED PANEL. NO ISSUES NOTED. REMOVED CORROSION ON TRANSITION PANEL FROM STA 767 TO STA 827 IAW B737-900 SRM 51-10-02. ORIGINAL THICKNESS .040, REMAINING IS .020, LOSS OF MATERIAL IS .020 FOUND OUT OF LIMITS IAW B737- 900 SRM 53-00-53. REMOVED AND REPLACED TRANSITION PANEL AS NEEDED FROM STA 727I+10 TO STA 787+10 IAW B737-900 SRM 51-40-02, SRM 53-00-53-2R-5 AND BAC DWG 146A7500 REV-.

---
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.