# SDR BTVR2015120200001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 12, 2015
- Submitted: December 2, 2015
- Operation: General aviation
- Filed by: [Pentastar Aviation, LLC., repair station BTVR626C](https://openairdocs.org/faa-repair-station/BTVR626C/pentastar-aviation-llc.md) (OpenAirDocs)
- Aircraft: [N877LC](https://openairdocs.org/aircraft/N877LC), registered now
- Make and model: Gulstm GIV
- Aircraft serial: 1165
- Aircraft time: 11,197 hours, 4,999 cycles
- System (JASC): [5740 · Wing, Attach Fittings](https://openairdocs.org/jasc/5740)
- Part: Fitting
- Part number: 1159WM30700
- Part serial: NSN
- Condition: Corroded
- Location: Lt Wing
- Part time: 11,197 hours, 4,999 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/BTVR2015120200001

## Discrepancy

VISUAL INSPECTION OF LT WINGLET MOUNTING HOLES REVEALED CORROSION IN 6 EA OF THE VERTICAL ATTACH BORES FOR THE MOUNTING HARDWARE.  CORROSION VERIFIED TO BE OUT OF LIMITS IAW MFG INSTRUCTIONS.  WILL REQUIRE OVERSIZING OF BORES WITH APPROVED DATA.

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