N21D - 1975 Smith Aerostar 601P Aircraft Registration

N21D is a 1975 Smith AEROSTAR 601P, a twin-engine reciprocating (piston) aircraft registered to Bits Real Estate LLC in Foster City, CA. This aircraft holds a standard airworthiness certificate issued by the Federal Aviation Administration on July 3, 1990. The registration certificate was issued on May 1, 2024. The registration is set to expire on May 31, 2031. Powered by a Lycoming IO-540 SER engine producing 300 horsepower, N21D is. The aircraft's Mode S transponder code is A1B774 (hex), used for ADS-B identification and flight tracking. N21D was last tracked by AviatorDB near Sacramento Executive Airport (KSAC) on March 15, 2026. The FAA registry record for N21D was last updated on May 1, 2024. AviatorDB monitors aircraft positions through ADS-B surveillance data and updates records as new position data is received.

Smith is an aircraft manufacturer with aircraft registered in the FAA database tracked by AviatorDB. AviatorDB tracks 184 Smith aircraft currently registered in the FAA database, including the AEROSTAR 601P model.

AviatorDB has found no NTSB accident or incident reports involving N21D. 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.