# SDR KCSA2012041010049

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 10, 2012
- Submitted: April 11, 2012
- Operation: Air carrier
- Aircraft: N748CK
- Make and model: Boeing 747221F
- Aircraft serial: 21744
- Aircraft time: 113,005 hours, 25,456 cycles
- System (JASC): [5730 · Wing, Plate/Skin](https://openairdocs.org/jasc/5730)
- Part: Skin
- Condition: Corroded
- Location: Lt Wing
- 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/KCSA2012041010049

## Discrepancy

LEFT WING T/E WBL 158 UPPER SURFACE WHERE T/E PANEL MEETS SPAR HAS POPPED RIVETS AND EVIDENCE OF CORROSION.

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