# SDR 2012FA0000651

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 26, 2012
- Submitted: September 26, 2012
- Operation: General aviation
- Aircraft: [N441QS](https://openairdocs.org/aircraft/N441QS), registered now
- Make and model: Gulstm GIV
- Aircraft serial: 1341
- Aircraft time: 11,724 hours, 5,908 cycles
- Engine: Rroyce TAY6118
- System (JASC): [5712 · Wing, Rib/Bulkhead](https://openairdocs.org/jasc/5712)
- Part: Rib
- Part number: 1159WM2002331
- Part serial: 1341
- Condition: Corroded
- Location: Zone 500
- Part time: 11,724 hours, 5,908 cycles
- 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/2012FA0000651

## Discrepancy

LEFT SPONSON RIB TRUNNION HAS CORROSION IN FORWARD AND AFT LUG, REFERENCE W/O 2129.21.28 AND 21.28.

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