N121K - 1972 Keim Midget Mustang M-1 Aircraft Registration

MIMU

1972 KEIM MIDGET MUSTANG M-1

Aircraft Description

N121K is a 1972 Keim Midget Mustang M-1, a single-engine reciprocating (piston) aircraft registered to Swartzendruber Brett in Hesston, KS. This aircraft holds a experimental airworthiness certificate issued by the Federal Aviation Administration on May 30, 1980. The registration certificate was issued on July 4, 2024. The registration is set to expire on July 31, 2031. Powered by a Cont Motor IO-200 engine producing 115 horsepower, N121K is. The aircraft's Mode S transponder code is A0584A (hex), used for ADS-B identification and flight tracking. The FAA registry record for N121K was last updated on July 4, 2024. AviatorDB monitors aircraft positions through ADS-B surveillance data and updates records as new position data is received.

Keim Midget Mustang is an aircraft manufacturer with aircraft registered in the FAA database tracked by AviatorDB. AviatorDB tracks 1 Keim Midget Mustang aircraft currently registered in the FAA database, including the M-1 model.

AviatorDB has found no NTSB accident or incident reports involving N121K. 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
1972
Manufacturer
KEIM MIDGET MUSTANG
Model
M-1
Type Aircraft
Fixed Wing Single Engine
ICAO Type Code
MIMUMM-1 Midget Mustang
Cruise Speed
112 mph
Weight Class
Up to 12,500 lbs
Airworthiness Date
May 30, 1980
Classification
Experimental 2 Category
Type Registration
Individual
Status
Valid Registration
Cert Issue Date
July 4, 2024

Registered Owner

Name
SWARTZENDRUBER BRETT
Address
10300 NW 72ND ST
City
HESSTON
State / Zip Code
Kansas67062-9279
Country
United States

Powerplant & Avionics

Engine Type
Reciprocating
Number of Engines
1
Engine Manufacturer
CONT MOTOR
Engine Model
IO-200
Horsepower
115 HP
Mode S Code (Oct)
50054112
Mode S Code (Hex)
A0584A

Additional Details

Registration
N121K
Serial Number
334
Number of Engines
1
Number of Seats
1
Expiration Date
July 31, 2031
Last Action Date
July 4, 2024
Last Update Date
July 4, 2024
Unique ID
00420400

Data Source

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

Last updated: 2026-04-01 01:32:20 UTC