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Registered aircraft · FAA record as of September 25, 2026
N66DK

Koster Douglas D COZY MARK IV

Valid Illinois

N66DK is a Koster Douglas D COZY MARK IV, a fixed-wing airplane with one motor with a piston engine, built in 1994. It has 4 seats. It is registered to an individual in Aurora, Illinois. The registration is valid: it was issued on May 16, 1994 and expires on April 30, 2030. It holds an experimental airworthiness certificate for amateur built, dated July 20, 1994.

Aircraft

Maker
Koster Douglas D
Model
COZY MARK IV
Serial number
23
Type
Fixed-wing, single engine
Power
Piston (reciprocating), 1 motor · Lycoming I0360 SER A&C · 200 hp
Seats
4
Year built
1994
Transponder code
A8B235 (octal 52131065)

Registration

Status
Valid registration
Certificate issued
May 16, 1994
Expires
April 30, 2030
Last FAA action
October 20, 2023
Airworthiness
Experimental · Amateur built · July 20, 1994
FAA region
Great Lakes
FAA record id
00544842

Owner as the FAA publishes it

Name
Koster Douglas D
Type
Individual
Address
2275 Fox Valley Ct
Aurora, IL 60504

Owners can ask the FAA to withhold their name and address from public files. When they do, those fields are blank here as well. How that works.

Documents on file 0

No bills of sale, loans or other documents are indexed against this tail number.

Source: FAA Civil Aviation Registry, Releasable Aircraft Database, September 25, 2026. See this record on the FAA site · This record as data