# N4939M: 1974 Cessna 421B, registration cancelled 2007-05-18

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: May 18, 2007
- Status when cancelled: Sale reported
- Airframe: [Cessna 421B](https://openairdocs.org/model/cessna-421b) (registry code 2076014)
- Engine: [Continental GTSI0-520-F-K](https://openairdocs.org/engine/continental-gtsi0-520-f-k) (registry code 17031)
- Data sheets: [TCDS A7CE](https://openairdocs.org/tcds/A7CE) (OpenAirDocs)
- Serial number: 421B0632
- Year built: 1974
- Type of aircraft: Fixed wing multi engine
- Engine type: Reciprocating
- Airworthiness: Standard, normal
- Airworthiness date: June 19, 1981
- Last registry action: July 21, 1994
- Mode S code: A61EDC
- Location: [Wayne, NJ](https://openairdocs.org/faa-place/NJ/Wayne)
- Owner type: Individual
- Owner's area on the map: 40.9254° N, 74.2765° W: Placed by OpenAirDocs: center of Wayne, NJ, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N4939M
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4939M
- Page: https://openairdocs.org/deregistered/N4939M-2007-05-18

From the FAA registry file of October 29, 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 421B: https://openairdocs.org/model/cessna-421b.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 CHI93FA149](https://openairdocs.org/ntsb/CHI93FA149), Apr 29, 1993: Cessna 421B (N4939M), Valley Park, MO, destroyed, 2 fatal. Probable cause: IMPROPER PLANNING/DECISION BY THE PILOT, WHICH RESULTED IN FUEL EXHAUSTION, DUE TO AN INADEQUATE SUPPLY OF FUEL, AND THE PILOT'S FAILURE TO MAINTAIN CONTROL OF THE AIRPLANE DURING APPROACH TO AN…

## 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 19930429011029A](https://openairdocs.org/incident/19930429011029A), Apr 29, 1993: Cessna 421B (N4939M), St Louis, MO, Destroyed, 2 fatal. On avionics test flight declared low fuel but exhausted fuel on vector to sus. Crash landed in land fill area.

## Other aircraft with N4939M

- [Cancelled 1978-09-28](https://openairdocs.org/deregistered/N4939M-1978-09-28): Beech 76, S/N ME-44, built 1978. Exported to New Zealand. Owner: [Flynns Ferry Service Inc](https://openairdocs.org/faa-owner/FLYNNS%20FERRY%20SERVICE%20INC), [Augusta, KS](https://openairdocs.org/faa-place/KS/Augusta)

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