# SDR 2026FA0000508

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 10, 2026
- Submitted: June 10, 2026
- Operation: General aviation
- Aircraft: [N28TN](https://openairdocs.org/aircraft/N28TN), registered now
- Make and model: Doug R4D-8
- Registry model: [Doug R4D-8](https://openairdocs.org/model/douglas-r4d-8) (OpenAirDocs)
- Aircraft serial: 43354
- Aircraft time: 22,888 hours
- Engine: Wright R182080
- Engine time: 470 hours
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Cylinder
- Condition: Separated
- Location: Engine
- Stage of operation: AP
- How discovered: O
- Nature of condition: Y
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2026FA0000508

## Discrepancy

ON 6/9/26 ABOUT 1:00PM AKST, THE SUPER DC3 TAIL NUMBER N28TN WAS RETURNING TO ANCHORAGE WHEN THE #2 ENGINE FAILED. UPON INSPECTION THE #9 CYLINDER CRACKED AROUND THE BASE, SEPARATED FROM THE ENGINE AND LODGED IN THE COWLING. THE FLIGHT CREW SHUT THE ENGINE DOWN AND LANDED SAFELY IN ANCHORAGE. THE FLIGHT CREW STATED THAT THE FIRE LIGHT FOR THE #2 ENGINE BRIEFLY ILLUMINATED, AND THEY WERE ABLE TO GO THROUGH THE CHECKLIST AND EXTINGUISH THE LIGHT. AFTER INSPECTING THE DAMAGE WE DECIDED TO REMOVE THE ENGINE FOR REPAIR.

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