# SDR SPAA0400073

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 9, 2004
- Submitted: November 24, 2004
- Operation: Air carrier
- Aircraft: N712S
- Make and model: Boeing 737-2Y5
- Registry model: [Boeing 737-2Y5](https://openairdocs.org/model/boeing-737-2y5) (OpenAirDocs)
- Aircraft serial: 23038
- Aircraft time: 62,025 hours, 32,452 cycles
- System (JASC): [5730 · Wing, Plate/Skin](https://openairdocs.org/jasc/5730)
- Part: Skin
- Part number: 65C171911
- 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/SPAA0400073

## Discrepancy

CORROSION DAMAGE WAS FOUND ON THE LT UPPER WING SKIN P/N 65C17191-1 AT THE REAR SPAR AT APPROXIMATELY WS 442.0. THE CORROSION WAS REMOVED AND TRIMMED AND A REPAIR SCHEME WAS PROVIDED BY BOEING ENGINEERING. THE CORROSION AREA WAS REPAIRED PER BOEING INSTRUCTIONS AND A 8110-3 STRUCTURAL SUBSTANTIATION FOR WAS ISSUED.

---
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.