The U.S. aircraft register, updated daily
Deregistered · FAA record as of October 2, 2026
N121SU

N121SU is not currently registered. It was last assigned to a Cessna 172N. The FAA cancelled the registration on March 23, 1992 when the aircraft was exported to Dominican Republic. The last status on file was "second attempt to mail the triennial form, no response".

Cessna 172N cancelled March 23, 1992

Serial number
17271347
Type
Fixed-wing, single engine · Piston (reciprocating)
Year built
—
Last status
Second attempt to mail the triennial form, no response
Exported to
Dominican Republic
Certificate issued
December 3, 1985
Last FAA action
March 16, 1991
Last owner
Hinterlach Roberta A (Individual)
Melbourne Beach, FL
Airworthiness
None on file

NTSB accident and incident record under N121SU

MIA86LA124Accident on April 18, 1986 at St. Augustine, FL: no injuries, substantial damage.

Aircraft on the NTSB record: Cessna 172N · serial 17271347

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