N399SK - 2025 Diamond Aircraft Industries DA 42 NG Aircraft Registration

N399SK is a 2025 Diamond Aircraft Ind Gmbh DA 42 NG, a twin-engine reciprocating (piston) aircraft registered to Alf Ix LLC in Chicago, IL. This aircraft holds a standard airworthiness certificate issued by the Federal Aviation Administration on December 8, 2025. The registration certificate was issued on January 23, 2026. The registration is set to expire on January 31, 2033. Powered by a Austro E4 SERIES engine producing 168 horsepower, N399SK is. The aircraft's Mode S transponder code is A4A5D2 (hex), used for ADS-B identification and flight tracking. N399SK was last tracked by AviatorDB at coordinates 42.5424, -90.3039 on June 26, 2026. The FAA registry record for N399SK was last updated on January 23, 2026. AviatorDB monitors aircraft positions through ADS-B surveillance data and updates records as new position data is received.

The Diamond DA42 Twin Star marked a revolutionary advance in general aviation as the first certified twin-engine aircraft powered by diesel engines, offering unprecedented fuel efficiency and operating economics. First flown on December 9, 2002, it is a low-wing twin-engine aircraft seating up to four occupants with a composite airframe construction. The DA42 demonstrated its remarkable range capability by completing the first non-stop diesel-powered transatlantic crossing in 2004. Manufactured by Diamond Aircraft Industries of Austria, over 1,000 aircraft have been produced. AviatorDB tracks 287 Diamond Aircraft Ind Gmbh aircraft currently registered in the FAA database. The ICAO type designator for this aircraft model is DA42.

AviatorDB has found no NTSB accident or incident reports involving N399SK. AviatorDB cross-references all FAA registration data with NTSB accident and incident reports, providing a comprehensive safety overview for every registered aircraft in the United States.