# SDR 2026FA0000017

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 19, 2025
- Submitted: January 12, 2026
- Operation: General aviation
- Aircraft: [N41395](https://openairdocs.org/aircraft/N41395), registered now
- Make and model: Agusta AW139
- Registry model: [Agusta AW139](https://openairdocs.org/model/agustawestland-philadelphia-aw139) (OpenAirDocs)
- Aircraft serial: 9YTKB
- Aircraft time: 8,312 hours, 18,358 cycles
- Engine: Pwc PT6C67C
- System (JASC): [5302 · Rotorcraft Tail Boom](https://openairdocs.org/jasc/5302)
- Part: Stabilizer
- Part number: 3G5510A05432
- Part serial: PLY044
- Condition: Cracked
- Location: Leading Edge
- Part time: 8,312 hours, 18,358 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2026FA0000017

## Discrepancy

DURING A VISUAL INSPECTION OF 9Y-TKB AFTER FLIGHT THE LINE SUPERVISORS DISCOVERED THE CRACK ON THE TAILPLANE ASSEMBLY LEFT LEADING EDGE LOWER PANEL. LOCATION OF CRACK IS ESTIMATED TO BE STA 12370 AND BL (-940 THRU -718).  A LOGBOOK ENTRY (LBE 206/25) WAS RAISED TO RECORD THIS DEFECT. OEM WAS ENGAGED VIA PSE/TQ/2025/220653 ON 19TH NOVEMBER 2025.  REPLACEMENT OF TAILPLANE ASSEMBLY WAS CARRIED OUT ON THE RESPECTIVE LOGBOOK ENTRY (LBE 206/25). THE AFFECTED TAILPLANE LEFT LEADING EDGE (P/N 3G5510A05731M01) WAS REPLACED.

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