# SDR 2026FA0000825

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 7, 2026
- Submitted: October 9, 2026
- Operation: General aviation
- Aircraft: N9YTKD
- Make and model: Agusta AW139
- Registry model: [Agusta AW139](https://openairdocs.org/model/agustawestland-philadelphia-aw139) (OpenAirDocs)
- Aircraft serial: 41398
- Aircraft time: 9,171 hours, 20,350 cycles
- Engine: Pwc PT6C67C
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Hydraulic Line
- Part number: A494AD3C00C0530X
- Part serial: NA
- Condition: Ruptured
- Location: Zone 200
- Part time: 8,917 hours, 19,684 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2026FA0000825

## Discrepancy

DURING CRUISE AFTER DEPARTING, BTWN 5-10 MINUTES AFTER TAKE-OFF, AROUND 2000FT AND APPROX  140KTS, CREW NOTICED A CAS MSG HYD1 MIN, FOLLOWED BY 1 HYD PUMP, 1 HYD PRESS, 1 SERVO & EMERG UTIL PRESS CAUTIONS ILLUMINATED.  AT THE POINT OF CAS INDICATIONS; MLG WERE UP, & WEATHER CONDITIONS CLEAR.  CREW INITIATED A DECENT & TURNED BACK TO AIRPORT. ATC NOTIFIED & CARRIED OUT QRH CHKLST. ACFT RETURNED TO BASE SAFELY & SHUTDOWN FOR MAINT. ACFT FUEL STATE ON SHUTDOWN WAS 1715LBS. REFERENCE IS MADE TO PSE/TQ/2025/191136. THIS ACFT WAS INDEED THE SAME AIRCRAFT WITH THIS SERVO CONTROL LINE RUPTURE ON 22ND MARCH 2025.  THIS REPEAT OCCURRENCE HAPPENS ON NR 1 SERVO CONTROL LINE, THAT WAS CANNIBALIZED FROM 9Y-TKB.   OEM WERE INFORMED OF THE INCIDENT. NR 1 SERVO CONTROL LINE WAS SEEN TO BE RUPTURED, SAME TO BE REPLACED. ACFT GROUND RUN FOR LEAK CHECK & FLIGHT TEST CARRIED OUT,  ALL FOUND TO BE SATISFACTORY.
ACFT RETURNED TO SERVICE.

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