# SDR UO2R2020111101

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 11, 2020
- Submitted: November 12, 2020
- Operation: Air carrier
- Filed by: [StandardAero Business Aviation Services, L.L.C., repair station UO2R221L](https://openairdocs.org/faa-repair-station/UO2R221L/standardaero-business-aviation-services-l-l-c.md) (OpenAirDocs)
- Aircraft: [N528QS](https://openairdocs.org/aircraft/N528QS), registered now
- Make and model: Gulstm GVSPG550
- Aircraft serial: 5042
- Aircraft time: 14,441 hours, 5,450 cycles
- System (JASC): [5330 · Fuselage Main, Plate/Skin](https://openairdocs.org/jasc/5330)
- Part: Skin
- Condition: Corroded
- Location: Fuselage
- Part time: 14,441 hours, 5,450 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/UO2R2020111101

## Discrepancy

RAZOR TOOL MARKS PRESENT ON FUSELAGE SKIN BELOW THE TOP FWD TCAS ANTENNA.  DISCREPANCY FOUND DURING COMPLIANCE OF THE 72 CALENDAR MONTH SCHEDULED INSPECTION TASK 539005-UPPER ANTENNA AND PENETRATION INTERFACE-DETAILED INSPECTION.  THE DAMAGE EXCEEDED MAXIMUM TOLERANCES ACCEPTABLE TO THE MANUFACTURER.  MAJOR TYPE REPAIR WAS ACCOMPLISHED FOR RETURN TO SERVICE.

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