# N4043B: Dehavilland DHC-6 TWIN OTTER, registration cancelled 1972-11-30

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: November 30, 1972
- Status when cancelled: Valid registration
- Airframe: [Dehavilland DHC-6 TWIN OTTER](https://openairdocs.org/model/dehavilland-dhc-6-twin-otter) (registry code 2802606)
- Serial number: 13
- Type of aircraft: Fixed wing multi engine
- Certificate issued: February 10, 1972
- Mode S code: A4BE40
- Owner when cancelled: [Air Wisconsin Inc](https://openairdocs.org/faa-owner/AIR%20WISCONSIN%20INC)
- Location: [Appleton, WI](https://openairdocs.org/faa-place/WI/Appleton)
- Owner type: Corporation
- The mark today: https://openairdocs.org/aircraft/N4043B
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4043B
- Page: https://openairdocs.org/deregistered/N4043B-1972-11-30

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 Dehavilland DHC-6 TWIN OTTER: https://openairdocs.org/model/dehavilland-dhc-6-twin-otter.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 DCA72AZ012](https://openairdocs.org/ntsb/DCA72AZ012), Jun 29, 1972: Dehavilland DHC-6 (N4043B), Appleton, WI, destroyed, 13 fatal

## Other aircraft with N4043B

- [Registered now](https://openairdocs.org/aircraft/N4043B): Robinson Helicopter R44 II, S/N 14431, built 2021
- [Cancelled 2008-06-09](https://openairdocs.org/deregistered/N4043B-2008-06-09): Balloon Works FIREFLY 7, S/N 7864, built 1979. Second triennial mailing, no response. Owner: [Angus Bonnie Jo DBA](https://openairdocs.org/faa-owner/ANGUS%20BONNIE%20JO%20DBA), [Covington, KY](https://openairdocs.org/faa-place/KY/Covington)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.