N399SK - 2025 Diamond Aircraft Ind Gmbh DA 42 NG Aircraft Registration

DA42

2025 DIAMOND AIRCRAFT IND GMBH DA 42 NG

Aircraft Description

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 42.5014, -90.7082 on March 24, 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.

Diamond Aircraft Industries, headquartered in Wiener Neustadt, Austria, with manufacturing in London, Ontario, Canada, produces modern composite aircraft known for fuel efficiency and safety. Their DA40 and DA62 are popular for flight training and personal aviation. AviatorDB tracks 289 Diamond Aircraft Ind Gmbh aircraft currently registered in the FAA database, including the DA 42 NG model.

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.

Model Year
2025
Manufacturer
DIAMOND AIRCRAFT IND GMBH
Model
DA 42 NG
Type Aircraft
Fixed Wing Multi Engine
ICAO Type Code
DA42DA-42 Twin Star
Weight Class
Up to 12,500 lbs
Airworthiness Date
December 8, 2025
Classification
Standard Normal Category
Type Registration
LLC
Status
Valid Registration
Cert Issue Date
January 23, 2026

Registered Owner

Name
ALF IX LLC
Address
70 W MADISON ST STE 2200
City
CHICAGO
State / Zip Code
Illinois60602-4383
Country
United States

Powerplant & Avionics

Engine Type
Reciprocating
Number of Engines
2
Engine Manufacturer
AUSTRO
Engine Model
E4 SERIES
Horsepower
168 HP
Mode S Code (Oct)
51122722
Mode S Code (Hex)
A4A5D2

Additional Details

Registration
N399SK
Serial Number
42.N608
Number of Engines
2
Number of Seats
4
Expiration Date
January 31, 2033
Last Action Date
January 23, 2026
Last Update Date
January 19, 2026
Unique ID
01529408

Last Known Position

Date
June 6, 2026 (UTC 20:28:36)
Airport
Latitude
42.650834
Longitude
-90.819823

Data Source

Data provided by the US Federal Aviation Administration. View on FAA.gov

Last updated: 2026-06-15 01:32:20 UTC