N21BJ - Brown B.j Sportster Aircraft Registration

BROWN B.J SPORTSTER

Aircraft Description

N21BJ is a Brown B.J SPORTSTER, a single-engine reciprocating (piston) aircraft registered to Seven M Enterprises in Kalispell, MT. This aircraft holds a experimental airworthiness certificate issued by the Federal Aviation Administration on July 19, 1977. The registration certificate was issued on August 8, 2023. The registration is set to expire on August 31, 2030. Powered by a Franklin 4AC199D&E SER engine producing 90 horsepower, N21BJ is. The aircraft's Mode S transponder code is A1B74B (hex), used for ADS-B identification and flight tracking. The FAA registry record for N21BJ was last updated on August 8, 2023. AviatorDB monitors aircraft positions through ADS-B surveillance data and updates records as new position data is received.

Brown is an aircraft manufacturer with aircraft registered in the FAA database tracked by AviatorDB. AviatorDB tracks 8 Brown aircraft currently registered in the FAA database, including the B.J SPORTSTER model.

AviatorDB has found no NTSB accident or incident reports involving N21BJ. 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
Manufacturer
BROWN
Model
B.J SPORTSTER
Type Aircraft
Fixed Wing Single Engine
Cruise Speed
85 mph
Weight Class
Up to 12,500 lbs
Airworthiness Date
July 19, 1977
Classification
Experimental 2 Category
Type Registration
Partnership
Status
Valid Registration
Cert Issue Date
August 8, 2023

Registered Owner

Name
SEVEN M ENTERPRISES
Address
30 WHITETAIL MEADOWS RD
City
KALISPELL
State / Zip Code
Montana59901-8207
Country
United States

Powerplant & Avionics

Engine Type
Reciprocating
Number of Engines
1
Engine Manufacturer
FRANKLIN
Engine Model
4AC199D&E SER
Horsepower
90 HP
Mode S Code (Oct)
50333513
Mode S Code (Hex)
A1B74B

Additional Details

Registration
N21BJ
Serial Number
001
Number of Engines
1
Number of Seats
1
Expiration Date
August 31, 2030
Last Action Date
August 8, 2023
Last Update Date
January 19, 2026
Unique ID
00421302

Data Source

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

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