# N4121Q: 1967 Cessna 310N, registration cancelled 1978-09-25

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: September 25, 1978
- Status when cancelled: Revoked, canceled
- Airframe: [Cessna 310N](https://openairdocs.org/model/cessna-310n) (registry code 2074234)
- Engine: [Continental I0-470 series](https://openairdocs.org/engine/continental-i0-470-series) (registry code 17027)
- Data sheets: [TCDS 3A10](https://openairdocs.org/tcds/3A10) (OpenAirDocs)
- Serial number: 310N-0021
- Year built: 1967
- Type of aircraft: Fixed wing multi engine
- Engine type: Reciprocating
- Airworthiness: Standard
- Certificate issued: February 2, 1978
- Last registry action: February 4, 1978
- Mode S code: A4DE18
- Owner when cancelled: [R K M Leasing Ltd](https://openairdocs.org/faa-owner/R%20K%20M%20LEASING%20LTD)
- Location: [Norwalk, CT](https://openairdocs.org/faa-place/CT/Norwalk)
- Owner type: Corporation
- Owner's area on the map: 41.1382° N, 73.4016° W: Placed by OpenAirDocs at the center of ZIP code 06851, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N4121Q
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4121Q
- Page: https://openairdocs.org/deregistered/N4121Q-1978-09-25

From the FAA registry file of November 3, 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 310N: https://openairdocs.org/model/cessna-310n.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 NYC79FA009](https://openairdocs.org/ntsb/NYC79FA009), Sep 25, 1978: Cessna 310N (N4121Q), Monroe, MA, destroyed, 3 fatal

## 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 19780925043679A](https://openairdocs.org/incident/19780925043679A), Sep 25, 1978: Cessna 310N (N4121Q), Monroe, MA, Destroyed, 2 fatal. Landing gear would not retract.

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