# N5594N: Hiller UH-12E, registration cancelled 1989-07-27

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: July 27, 1989
- Status when cancelled: Triennial form not returned
- Airframe: [Hiller UH-12E](https://openairdocs.org/model/hiller-uh-12e) (registry code 4360122)
- Data sheets: [TCDS 4H11](https://openairdocs.org/tcds/4H11) (OpenAirDocs)
- Serial number: 1453
- Type of aircraft: Rotorcraft
- Mode S code: A723CB
- The mark today: https://openairdocs.org/aircraft/N5594N
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=5594N
- Page: https://openairdocs.org/deregistered/N5594N-1989-07-27

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

## NTSB investigations (4)

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 DEN89DTM02](https://openairdocs.org/ntsb/DEN89DTM02), May 13, 1989: Hiller UH-12E (N5594N), Mack, CO, substantial damage. Probable cause: THE PILOT'S FAILURE TO MAINTAIN PROPER ALTITUDE DURING A SWATH RUN.
- [NTSB CHI82DA301](https://openairdocs.org/ntsb/CHI82DA301), Aug 10, 1982: Hiller 12E (N5594N), Palisade, MN, substantial damage
- [NTSB CHI81FER59](https://openairdocs.org/ntsb/CHI81FER59), Jul 20, 1981: Hiller Acft UH-12E (N5594N), Glyndon, MN, substantial damage
- [NTSB DEN81FTG01](https://openairdocs.org/ntsb/DEN81FTG01), Oct 3, 1980: Hiller UH12E (N5594N), Argusville, ND, substantial damage

## FAA accident and incident reports (4)

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 19890513011389A](https://openairdocs.org/incident/19890513011389A), May 13, 1989: Hiller UH12E (N5594N), Mack, CO, Substantial damage. Skids caught in alfalfa while spraying. Helicopter tumbled and crashed.
- [Accident 19820810036689A](https://openairdocs.org/incident/19820810036689A), Aug 10, 1982: Hiller UH12E (N5594N), Palisade, MN, Substantial damage. Engine quit during spray run. Hard landing chopped off tail boom. Broken connecting rod found to be under torqued.
- [Accident 19810720043379A](https://openairdocs.org/incident/19810720043379A), Jul 20, 1981: Hiller UH12E (N5594N), Glyndon, MN, Substantial damage. Engine quit during spray run. Hard, forced landing cut off tail boom. Found water in fuel and fuel truck.
- [Accident 19801003050129A](https://openairdocs.org/incident/19801003050129A), Oct 3, 1980: Hiller UH12E (N5594N), Argusville, ND, Substantial damage. Pilot attempted emergency landing after main rotor clutch failed. Touched down on soft ground.

## Other aircraft with N5594N

- [Cancelled 1952-07-02](https://openairdocs.org/deregistered/N5594N-1952-07-02): Consolidated Vultee BT-13A, S/N 6863. Owner: [Atkin Eugene](https://openairdocs.org/faa-owner/ATKIN%20EUGENE), [University Heights, OH](https://openairdocs.org/faa-place/OH/University%20Heights)

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