# N4026S: 1978 Hiller UH-12E, registration cancelled 2002-11-04

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: November 4, 2002
- Status when cancelled: Triennial form not returned
- Airframe: [Hiller UH-12E](https://openairdocs.org/model/hiller-uh-12e) (registry code 4360122)
- Engine: [Lycoming VO-540 series](https://openairdocs.org/engine/lycoming-vo-540-series) (registry code 41534)
- Data sheets: [TCDS 4H11](https://openairdocs.org/tcds/4H11), [TCDS E-304](https://openairdocs.org/tcds/E-304) (OpenAirDocs)
- Serial number: 5055
- Year built: 1978
- Type of aircraft: Rotorcraft
- Engine type: Reciprocating
- Airworthiness: Experimental, research and development
- Airworthiness date: March 27, 1981
- Certificate issued: April 15, 1993
- Last registry action: April 16, 2002
- Mode S code: A4B74A
- Owner when cancelled: [Bonanza Valley Aviation Inc](https://openairdocs.org/faa-owner/BONANZA%20VALLEY%20AVIATION%20INC)
- Location: [Benson, MN](https://openairdocs.org/faa-place/MN/Benson)
- Owner type: Corporation
- Owner's area on the map: 45.3176° N, 95.5720° W: Placed by OpenAirDocs at the center of ZIP code 56215, within about 8 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N4026S
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4026S
- Page: https://openairdocs.org/deregistered/N4026S-2002-11-04

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 Hiller UH-12E: https://openairdocs.org/model/hiller-uh-12e.md

## NTSB investigations (3)

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 CHI94LA022](https://openairdocs.org/ntsb/CHI94LA022), Oct 22, 1993: Hiller UH12E (N4026S), Sioux Rapids, IA, destroyed. Probable cause: the Pilot in Command failed to maintain clearance with the terrain while proceeding up an upslope.
- [NTSB LAX82DA306](https://openairdocs.org/ntsb/LAX82DA306), Aug 20, 1982: Hiller UH-12E (N4026S), Chandler, AZ, substantial damage
- [NTSB FTW79FQG05](https://openairdocs.org/ntsb/FTW79FQG05), Oct 19, 1978: Hiller UH-12E (N4026S), Stratford, TX, substantial damage

## FAA accident and incident reports (3)

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 19931022040789A](https://openairdocs.org/incident/19931022040789A), Oct 22, 1993: Hiller UH12E (N4026S), Sioux Rapids, IA, Destroyed. Rough engine spraying pasture. On forced landing left skid contacted ground. Rolled over and burned. Engine normal.
- [Accident 19820820041759A](https://openairdocs.org/incident/19820820041759A), Aug 20, 1982: Hiller UH12E (N4026S), Chandler, AZ, Substantial damage. Helicopter flew into its own wake on a spray run when a slight windshift occurred. Impact with ground severed skids
- [Accident 19781019040149A](https://openairdocs.org/incident/19781019040149A), Oct 19, 1978: Hiller UH12C (N4026S), Stratford, TX, Substantial damage. Debris from previous repair job left in induction system,entered nders and damaged spark plugs

## Other aircraft with N4026S

- [Cancelled 1973-01-18](https://openairdocs.org/deregistered/N4026S-1973-01-18): Sikorsky S-65C3, S/N 65351, built 1972. Exported to Israel. Owner: [United Aircraft Corp](https://openairdocs.org/faa-owner/UNITED%20AIRCRAFT%20CORP), [Stratford, CT](https://openairdocs.org/faa-place/CT/Stratford)

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