Aircraft Description
N21MH is a 1995 Hepperlen Harry M III RV-4, a single-engine reciprocating (piston) aircraft registered to Kannapell Joseph H in Green Cove Springs, FL. This aircraft holds a experimental airworthiness certificate issued by the Federal Aviation Administration on February 12, 1996. The registration certificate was issued on September 12, 2019. The registration is set to expire on September 30, 2029. Powered by a Lycoming 0-360-A1D engine producing 180 horsepower, N21MH is. The aircraft's Mode S transponder code is A1B844 (hex), used for ADS-B identification and flight tracking. The FAA registry record for N21MH was last updated on September 2, 2023. AviatorDB monitors aircraft positions through ADS-B surveillance data and updates records as new position data is received.
Hepperlen Harry M III is an aircraft manufacturer with aircraft registered in the FAA database tracked by AviatorDB. AviatorDB tracks 1 Hepperlen Harry M III aircraft currently registered in the FAA database, including the RV-4 model.
AviatorDB has found no NTSB accident or incident reports involving N21MH. 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.
Registered Owner
Powerplant & Avionics
Additional Details
Data Source
Data provided by the US Federal Aviation Administration. View on FAA.gov
Last updated: 2026-06-15 01:32:20 UTC