# SDR CALA2025042104042

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 10, 2025
- Submitted: April 21, 2025
- Operation: Air carrier
- Aircraft: [N12238](https://openairdocs.org/aircraft/N12238), registered now
- Make and model: Boeing 737824
- Aircraft serial: 28804
- Aircraft time: 78,270 hours, 28,919 cycles
- System (JASC): [5730 · Wing, Plate/Skin](https://openairdocs.org/jasc/5730)
- Part: Skin
- Part number: 112A4102207
- Condition: Cracked
- 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/CALA2025042104042

## Discrepancy

EA 5725-01143 OPS 001 LH WING LOWER SKING AT STRINGER 9 FWD AND AFT O/B FASTENERS ARE CRACKED ON LOWER SKIN CRACKS; RUNNING FWD TO AFT DIRECTION. WSTA 564.5 APPROX.  REPAIRED LH WING LOWER SKIN PER UNITED ECRA 5720-03517.  PERFORM AN INSPECTION PER PART 2 OF THE LATEST REVISION OF ECRA 5720-03517.

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