# N121SU: Cessna 172N, registration cancelled 1992-03-23

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: March 23, 1992
- Exported to: Dominican Republic
- Status when cancelled: Second triennial mailing, no response
- Airframe: [Cessna 172N](https://openairdocs.org/model/cessna-172n) (registry code 2072434)
- Data sheets: [TCDS 3A12](https://openairdocs.org/tcds/3A12) (OpenAirDocs)
- Serial number: 17271347
- Type of aircraft: Fixed wing single engine
- Certificate issued: December 3, 1985
- Last registry action: March 16, 1991
- Mode S code: A0590C
- Owner when cancelled: [Hinterlach Roberta A](https://openairdocs.org/faa-owner/HINTERLACH%20ROBERTA%20A)
- Location: [Melbourne Beach, FL](https://openairdocs.org/faa-place/FL/Melbourne%20Beach)
- Owner type: Individual
- Owner's area on the map: 27.9450° N, 80.5031° W: Placed by OpenAirDocs at the center of ZIP code 32951, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N121SU
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=121SU
- Page: https://openairdocs.org/deregistered/N121SU-1992-03-23

From the FAA registry file of November 7, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Cessna 172N: https://openairdocs.org/model/cessna-172n.md

## NTSB investigations (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB MIA86LA124](https://openairdocs.org/ntsb/MIA86LA124), Apr 18, 1986: Cessna 172N (N121SU), St. Augustine, FL, substantial damage

## FAA accident and incident reports (1)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 19860418012869A](https://openairdocs.org/incident/19860418012869A), Apr 18, 1986: Cessna 172N (N121SU), St Augustine, FL, Substantial damage. Landed hard on the nose gear and damaged it and the lower firewall.

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