# N3721B: Beech E18S, registration cancelled 1970-06-29

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: June 29, 1970
- Status when cancelled: Valid registration
- Airframe: [Beech E18S](https://openairdocs.org/model/beech-e18s) (registry code 1151006)
- Data sheets: [TCDS A-765](https://openairdocs.org/tcds/A-765) (OpenAirDocs)
- Serial number: BA-49
- Type of aircraft: Fixed wing multi engine
- Certificate issued: September 19, 1963
- Mode S code: A43DB6
- Owner when cancelled: [Quarnstrom Land Co](https://openairdocs.org/faa-owner/QUARNSTROM%20LAND%20CO)
- Location: [Detroit, MI](https://openairdocs.org/faa-place/MI/Detroit)
- Owner type: Corporation
- The mark today: https://openairdocs.org/aircraft/N3721B
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=3721B
- Page: https://openairdocs.org/deregistered/N3721B-1970-06-29

From the FAA registry file of November 4, 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 Beech E18S: https://openairdocs.org/model/beech-e18s.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 CHI67A0042](https://openairdocs.org/ntsb/CHI67A0042), Sep 25, 1966: Beech E18S (N3721B), Charlevoix, MI, destroyed, 2 fatal

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