# SDR CALA2026101320311

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 5, 2026
- Submitted: October 13, 2026
- Operation: Air carrier
- Aircraft: [N24212](https://openairdocs.org/aircraft/N24212), registered now
- Make and model: Boeing 737824
- Aircraft serial: 28772
- Aircraft time: 82,239 hours, 30,837 cycles
- System (JASC): [5713 · Wing, Longeron/Stringer](https://openairdocs.org/jasc/5713)
- Part: Stringer
- Part number: 112A3209203
- Condition: Corroded
- Location: Zone 500
- 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/CALA2026101320311

## Discrepancy

L/H WING INTERNAL AT RIB 21 LOWER FACE OF UPPER STRINGER HAS POSSIBLE CRACK AT STR 9. REPAIR STR 9 AT RIB 21 EO 5720-23033 REV A-F AND ECRA 5720-03359 .  AN INTERIM REPAIR TO THE LT WING UPPER STRINGER 9 CRACKS AT RIB 19 & 21 WAS PREVIOUSLY ACCOMPLISHED IAW EC/RA 5720-03359.  ALL FUTURE INSPECTIONS AND TERMINATING ACTION ASSOCIATED WITH INTERIM REPAIR WILL BE ACCOMPLISHED ON LOG PAGE 6262500.  NOR FURTHER ACTION IS REQUIRED FOR THIS LOG PAGE. C/W

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