The U.S. aircraft register, updated daily
Deregistered · FAA record as of October 2, 2026
N421MM

N421MM is not currently registered. It was last assigned to a Cessna 421B built in 1974. The FAA cancelled the registration on March 17, 2021. The last status on file was "registration expired".

N421MM is reserved by a private party since June 19, 2026. Reservation type: Fee paid. An expiration notice was issued on April 19, 2027.

Cessna 421B cancelled March 17, 2021

Serial number
421B0804
Type
Fixed-wing, multi-engine · Piston (reciprocating)
Year built
1974
Last status
Registration expired
Certificate issued
February 6, 2018
Last FAA action
February 6, 2018
Last owner
Hat Investments LLC (LLC)
Spartanburg, SC
Airworthiness
Standard · Normal

NTSB accident and incident record under N421MM

ERA18WA159Accident on June 5, 2018 at Rock Sound: fatal, destroyed (3 fatal).

Aircraft on the NTSB record: Cessna 421B · serial 421B0804

A tail number passes between aircraft over the years; match the serial number on the NTSB record against the airframe above. Source: NTSB aviation accident database, records through September 30, 2026.

Source: FAA Civil Aviation Registry, Releasable Aircraft Database, October 2, 2026. See this number on the FAA site