N239SE - 1972 Cessna 421B Aircraft Registration

C421

1972 CESSNA 421B

Aircraft Description

N239SE is a 1972 Cessna 421B, a twin-engine reciprocating (piston) aircraft registered to Riley Charles Sweeney in Highlands Ranch, CO. The registration certificate was issued on November 1, 2023. The registration is set to expire on November 30, 2030. Powered by a Cont Motor GTSI0-520-F-K engine producing 435 horsepower, N239SE is. The aircraft's Mode S transponder code is A22B84 (hex), used for ADS-B identification and flight tracking. N239SE was last tracked by AviatorDB near Centennial Airport (KAPA) on March 13, 2026. The FAA registry record for N239SE was last updated on April 30, 2025. AviatorDB monitors aircraft positions through ADS-B surveillance data and updates records as new position data is received.

The Cessna 421 Golden Eagle was a pressurized twin-engine aircraft that brought high-altitude comfort to the business aviation market at a fraction of turboprop costs. First flown on May 1, 1967, it was a low-wing monoplane powered by two Continental GTSIO-520 turbocharged engines, seating six to eight occupants. With a service ceiling of 30,000 feet and cruise speed of 277 mph, the 421 spanned 43 feet 2 inches with a length of approximately 39 feet. Cessna Aircraft Company manufactured 1,901 examples between 1967 and 1985. AviatorDB tracks 80,556 Cessna aircraft currently registered in the FAA database. The ICAO type designator for this aircraft model is C421.

AviatorDB has found no NTSB accident or incident reports involving N239SE. 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
CESSNA
Model
421B
Type Aircraft
Fixed Wing Multi Engine
ICAO Type Code
C421421 Executive Commuter
Cruise Speed
172 mph
Weight Class
Up to 12,500 lbs
Airworthiness Date
Classification
Standard Category
Type Registration
Individual
Status
Valid Registration
Cert Issue Date
November 1, 2023

Registered Owner

Name
RILEY CHARLES SWEENEY
Address
2622 CACTUS BLUFF PL
City
HIGHLANDS RANCH
State / Zip Code
Colorado80129-6456
Country
United States

Powerplant & Avionics

Engine Type
Reciprocating
Number of Engines
2
Engine Manufacturer
CONT MOTOR
Engine Model
GTSI0-520-F-K
Horsepower
435 HP
Mode S Code (Oct)
50425604
Mode S Code (Hex)
A22B84

Additional Details

Registration
N239SE
Serial Number
421B0315
Number of Engines
2
Number of Seats
8
Expiration Date
November 30, 2030
Last Action Date
April 30, 2025
Last Update Date
January 19, 2026
Unique ID
00673587

Last Known Position

Date
April 3, 2026 (UTC 19:36:09)
Airport
Latitude
39.58374
Longitude
-104.849731

Data Source

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

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