# SDR GR4D20191023002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 23, 2019
- Submitted: October 23, 2019
- Operation: Air carrier
- Filed by: [Gulfstream Services Corporation, repair station GR4D216M](https://openairdocs.org/faa-repair-station/GR4D216M/gulfstream-services-corporation.md) (OpenAirDocs)
- Aircraft: [N529QS](https://openairdocs.org/aircraft/N529QS), registered now
- Make and model: Gulstm GVSPG550
- Aircraft serial: 5156
- Aircraft time: 11,899 hours, 4,406 cycles
- System (JASC): [5511 · Horizontal Stabilizer, Spar/Rib](https://openairdocs.org/jasc/5511)
- Part: Rib
- Part number: 1159CSM52025007
- Condition: Corroded
- Location: Horizontal Stab
- Part time: 11,899 hours, 4,406 cycles
- Component: Horizontal Stab, Fokker
- Component part number: 1159CS50001804
- 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/GR4D20191023002

## Discrepancy

FOUND CORROSION ON R/H HORIZONTAL TIP CAP MOUNTING FLANGE. REQUIRED ENGINEERING DISPOSITION FOR APPROVAL TO CONTINUE IN SERVICE AFTER BLENDING

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