# N172ET: 1978 Hiller UH-12E, registration cancelled 2004-08-18

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: August 18, 2004
- Exported to: Canada
- 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: HA3072
- Year built: 1978
- Type of aircraft: Rotorcraft
- Engine type: Reciprocating
- Airworthiness: Standard, normal
- Airworthiness date: January 27, 1978
- Certificate issued: June 8, 1983
- Last registry action: June 15, 2004
- Mode S code: A12111
- Owner when cancelled: [San Joaquin Helicopter](https://openairdocs.org/faa-owner/SAN%20JOAQUIN%20HELICOPTER)
- Location: [Delano, CA](https://openairdocs.org/faa-place/CA/Delano)
- Owner type: Corporation
- Owner's area on the map: 35.7795° N, 119.1919° W: Placed by OpenAirDocs at the center of ZIP code 93215, within about 7 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N172ET
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=172ET
- Page: https://openairdocs.org/deregistered/N172ET-2004-08-18

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 LAX95LA132](https://openairdocs.org/ntsb/LAX95LA132), Mar 12, 1995: Hiller UH-12E (N172ET), Five Points, CA, substantial damage. Probable cause: fuel exhaustion due to the pilot's inattention to the fuel supply.
- [NTSB LAX86DVA09](https://openairdocs.org/ntsb/LAX86DVA09), Jun 17, 1986: Hiller UH-12E (N172ET), Delano, CA, substantial damage
- [NTSB SEA79FYM08](https://openairdocs.org/ntsb/SEA79FYM08), Dec 22, 1978: Hiller Acft Soloy (N172ET), Lacomb, OR, 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 19950312003659A](https://openairdocs.org/incident/19950312003659A), Mar 12, 1995: Hiller UH12E (N172ET), Five Points, CA, Substantial damage. Lost power on spray run. Too low for autorotation. Landed hard. Rolled over. Pilot stated he ran out of fuel.
- [Incident 19940627025309I](https://openairdocs.org/incident/19940627025309I), Jun 27, 1994: Hiller UH12E (N172ET), Pond, CA, Minor damage. Helicopter hit power line during application. Cracked spray boom. Flew back to base.
- [Accident 19860617081429A](https://openairdocs.org/incident/19860617081429A), Jun 17, 1986: Hiller UH12E (N172ET), Delano, CA, Substantial damage. Parts of the main rotor blade separated in flight. Investigation found the blades were not airworthy. Bogus part.
- [Accident 19781222041829A](https://openairdocs.org/incident/19781222041829A), Dec 22, 1978: Hiller UH12C (N172ET), Lacomb, OR, Substantial damage. Tach generator failed. Plt recd erroneous eng out warnings. Serviclletin soloy 03-560 ncw.

## Other aircraft with N172ET

- [Cancelled 2011-07-13](https://openairdocs.org/deregistered/N172ET-2011-07-13): Cessna 172P, S/N 17275477, built 1981. Exported to Brazil. Owner: [Net Aviation Inc](https://openairdocs.org/faa-owner/NET%20AVIATION%20INC), [Nantucket, MA](https://openairdocs.org/faa-place/MA/Nantucket)

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