N477MG - 1973 Cessna 421B Aircraft Registration

C421

1973 CESSNA 421B

Aircraft Description

N477MG is a 1973 Cessna 421B, a twin-engine reciprocating (piston) aircraft registered to Juliet Delta Aviation LLC in Bozeman, MT. This aircraft holds a standard airworthiness certificate issued by the Federal Aviation Administration on September 13, 1973. The registration certificate was issued on August 16, 2025. The registration is set to expire on August 31, 2032. Powered by a Cont Motor GTSIO-520-C engine producing 340 horsepower, N477MG is. The aircraft's Mode S transponder code is A5DC35 (hex), used for ADS-B identification and flight tracking. N477MG was last tracked by AviatorDB near Spruce Creek Airport (7FL6) on March 19, 2026. The FAA registry record for N477MG was last updated on August 16, 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 N477MG. 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
1973
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
September 13, 1973
Classification
Standard Normal Category
Type Registration
LLC
Status
Valid Registration
Cert Issue Date
August 16, 2025

Registered Owner

Name
JULIET DELTA AVIATION LLC
Address
3300 MAGENTA RD
City
BOZEMAN
State / Zip Code
Montana59718-7546
Country
United States

Powerplant & Avionics

Engine Type
Reciprocating
Number of Engines
2
Engine Manufacturer
CONT MOTOR
Engine Model
GTSIO-520-C
Horsepower
340 HP
Mode S Code (Oct)
51356065
Mode S Code (Hex)
A5DC35

Additional Details

Registration
N477MG
Serial Number
421B0477
Number of Engines
2
Number of Seats
8
Expiration Date
August 31, 2032
Last Action Date
August 16, 2025
Last Update Date
January 19, 2026
Unique ID
00091694

Last Known Position

Date
March 19, 2026 (UTC 11:59:41)
Airport
Latitude
29.077354
Longitude
-81.042987

Data Source

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

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