# SDR 2026FA0000238

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 16, 2026
- Submitted: March 30, 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: 8,468 hours, 18,701 cycles
- Engine: Pwc PT6C67C
- System (JASC): [2810 · Fuel Storage](https://openairdocs.org/jasc/2810)
- Part: Fuel Tank
- Part number: 3G2810V00232
- Part serial: 1149
- Condition: Leaking
- Location: Zone 100
- Part time: 3,500 cycles
- Stage of operation: TX
- How discovered: V
- Nature of condition: K
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2026FA0000238

## Discrepancy

ON 16TH MARCH 2026, AFTER 9Y-TKD RETURNED TO THE HANGAR, A HEAVY DOWNPOUR OF JET FUEL EMANATING UNDERNEATH THE AIRCRAFT WAS OBSERVED.  A DAILY INSPECTION WAS CONDUCTED; FUEL TANK LEAK WAS OBSERVED AT THE MAIN RIGHT FUEL TANK SUMP AREA.  AIRCRAFT DEFUELED TO FACILITATE ASSESSMENT.   FUEL SUMP GASKET WAS REPLACED WITH A NEW GASKET. AIRCRAFT REFUELED IN STAGES. AT ABOUT 1000LBS FUEL LEAKAGE WAS OBSERVED. UNSATISFACTORY. AIRCRAFT DEFUELED AND FUEL TANK REMOVED TO FACILITATE PHYSICAL INSPECTION OF AREA FOR SHARP EDGES AND FOD. NO FINDINGS.  NR 2 MAIN RIGHT FUEL TANK REPLACED.  AIRCRAFT REFUELED IN STAGES. QUANTITY INDICATION SYSTEM OPERATIONAL TEST CARRIED OUT. SATISFACTORY. AIRCRAFT RETURNED TO SERVICE.

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