# SDR U0GA VP000639

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 19, 2025
- Submitted: December 19, 2025
- Operation: Air carrier
- Aircraft: [N739BG](https://openairdocs.org/aircraft/N739BG), registered now
- Make and model: Agusta AW139
- Registry model: [Agusta AW139](https://openairdocs.org/model/agustawestland-philadelphia-aw139) (OpenAirDocs)
- Aircraft serial: 41350
- Aircraft time: 4,314 hours, 6,054 cycles
- Engine: Pwc PT6C67C
- Engine time: 4,314 hours, 3,034 cycles
- System (JASC): [5302 · Rotorcraft Tail Boom](https://openairdocs.org/jasc/5302)
- Part: Tail Boom
- Part number: 3G5350A00135
- Part serial: PZL003
- Condition: Corroded
- Location: Zone 300
- Part time: 9,036 hours, 6,054 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/U0GA%20VP000639

## Discrepancy

THIS AIRCRAFT HAS BEEN GROUNDED AT OUR REPAIR STATION ON VP-000639-2024 SINCE THE DATE OF DISCOVERY. THE REPAIR IS AS FOLLOWS; REPLACE LT SIDE PANEL, P/N 3G5350A07431C1 AND STA 8700 BULKHEAD FRAME, P/N 3G5306P14811 ON TAILBOOM P/N 3G5350A00135 S/N PZL003 TAILBOOM TT 9036.5. IAW PSE/TQ/2025/181854.

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