# N4109D: Helio H-391B, registration cancelled 1970-06-30

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: June 30, 1970
- Status when cancelled: Valid registration
- Airframe: [Helio H-391B](https://openairdocs.org/model/helio-h-391b) (registry code 4300106)
- Data sheets: [TCDS 1A8](https://openairdocs.org/tcds/1A8) (OpenAirDocs)
- Serial number: 026
- Type of aircraft: Fixed wing single engine
- Certificate issued: December 4, 1965
- Mode S code: A4D7B7
- Owner when cancelled: [Morgenroth Henri](https://openairdocs.org/faa-owner/MORGENROTH%20HENRI)
- Location: [Santa Barbara, CA](https://openairdocs.org/faa-place/CA/Santa%20Barbara)
- Owner type: Individual
- The mark today: https://openairdocs.org/aircraft/N4109D
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4109D
- Page: https://openairdocs.org/deregistered/N4109D-1970-06-30

From the FAA registry file of November 5, 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 Helio H-391B: https://openairdocs.org/model/helio-h-391b.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 OAK67F0166](https://openairdocs.org/ntsb/OAK67F0166), Nov 15, 1966: Helio Acft H-391B (N4109D), Oakland, CA, substantial damage

## Other aircraft with N4109D

- [Cancelled 2017-12-27](https://openairdocs.org/deregistered/N4109D-2017-12-27): Textron G36, S/N E-4109, built 2017. Exported to Egypt. Owner: [Textron Aviation Inc](https://openairdocs.org/faa-owner/TEXTRON%20AVIATION%20INC), [Wichita, KS](https://openairdocs.org/faa-place/KS/Wichita)

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