Staging copy. The live site is at https://staging.data.eflight.com.
eFlight RegistryFAA data, updated daily
Registered aircraft · FAA record as of September 25, 2026
N91KS

Spreuer Keith COZY MK IV

Valid Arizona

N91KS is a Spreuer Keith COZY MK IV, a fixed-wing airplane with one motor with a piston engine, built in 2004. It has 4 seats. It is registered to an individual in Prescott Valley, Arizona. The registration is valid: it was issued on February 13, 1998 and expires on September 30, 2029. It holds an experimental airworthiness certificate for amateur built, dated August 23, 2004.

Aircraft

Maker
Spreuer Keith
Model
COZY MK IV
Serial number
0018
Type
Fixed-wing, single engine
Power
Piston (reciprocating), 1 motor · Subaru ALL MDLS A/B · 400 hp
Seats
4
Year built
2004
Transponder code
AC9544 (octal 53112504)

Registration

Status
Valid registration
Certificate issued
February 13, 1998
Expires
September 30, 2029
Last FAA action
October 17, 2025
Airworthiness
Experimental · Amateur built · August 23, 2004
FAA region
Western-Pacific
FAA record id
00127021

Owner as the FAA publishes it

Name
Spreuer Keith R
Type
Individual
Address
7743 E Lavender Loop
Prescott Valley, AZ 86315-7860

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.

Earlier use of this number 1

1995-08-30Denney L Dan KITFOX IV · exported to Japan · Triennial registration form was mailed and has not been returned by the Post Office

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