N21591 - 2004 Cessna 172S Aircraft Registration

N21591 is a 2004 Cessna 172S, a single-engine reciprocating (piston) aircraft registered to Kohn Aviation LLC in San Carlos, CA. This aircraft holds a standard airworthiness certificate issued by the Federal Aviation Administration on June 29, 2004. The registration certificate was issued on August 24, 2018. The registration is set to expire on August 31, 2028. Powered by a Lycoming IO-360-L2A engine producing 180 horsepower, N21591 is. The aircraft's Mode S transponder code is A1CFC2 (hex), used for ADS-B identification and flight tracking. N21591 was last tracked by AviatorDB near San Carlos Airport (KSQL) on March 24, 2026. The FAA registry record for N21591 was last updated on June 3, 2023. AviatorDB monitors aircraft positions through ADS-B surveillance data and updates records as new position data is received.

The Cessna 172 Skyhawk stands as the most successful aircraft in general aviation history and holds the record as the longest-produced aircraft design ever manufactured. First flown in June 1955, it is a high-wing, single-engine monoplane that seats four occupants and features tricycle landing gear for enhanced stability. With a wingspan of 36 feet and a maximum range of 515 nautical miles, the aircraft has been produced continuously since 1956 with only brief interruptions. Manufactured originally by Cessna Aircraft Company, now part of Textron Aviation, total production exceeds 44,000 units. AviatorDB tracks 80,556 Cessna aircraft currently registered in the FAA database. The ICAO type designator for this aircraft model is C172.

AviatorDB has found no NTSB accident or incident reports involving N21591. 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.