N421ZM - 1981 Cessna 421C Aircraft Registration

N421ZM is a 1981 Cessna 421C, a twin-engine reciprocating (piston) aircraft registered to 3TR Aviation LLC in Longview, TX. This aircraft holds a standard airworthiness certificate issued by the Federal Aviation Administration on April 3, 1998. The registration certificate was issued on November 23, 2025. The registration is set to expire on November 30, 2032. Powered by a Cont Motor GTSIO-520 SER engine producing 300 horsepower, N421ZM is. The aircraft's Mode S transponder code is A501A1 (hex), used for ADS-B identification and flight tracking. N421ZM was last tracked by AviatorDB at coordinates 32.0866, -94.6714 on March 18, 2026. The FAA registry record for N421ZM was last updated on November 23, 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 N421ZM. 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.