# N4029D: 1979 Hiller UH-12E, registration cancelled 2018-03-02

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: March 2, 2018
- Status when cancelled: Registration expired, pending cancellation
- 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: 5098
- Year built: 1979
- Type of aircraft: Rotorcraft
- Engine type: Reciprocating
- Airworthiness: Multiple
- Airworthiness date: November 29, 1989
- Certificate issued: December 16, 1993
- Last registry action: August 26, 2013
- Mode S code: A4B7A6
- Owner when cancelled: [Weir Edward L](https://openairdocs.org/faa-owner/WEIR%20EDWARD%20L)
- Location: [Mineral Wells, TX](https://openairdocs.org/faa-place/TX/Mineral%20Wells)
- Owner type: Individual
- Owner's area on the map: 32.8024° N, 98.1425° W: Placed by OpenAirDocs at the center of ZIP code 76067, within about 8 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N4029D
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4029D
- Page: https://openairdocs.org/deregistered/N4029D-2018-03-02

From the FAA registry file of October 31, 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 (2)

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 FTW92LA007](https://openairdocs.org/ntsb/FTW92LA007), Oct 11, 1991: Hiller UH-12E (N4029D), Palacios, TX, substantial damage. Probable cause: THE PILOT'S INADEQUATE PREFLIGHT.
- [NTSB FTW88DRA05](https://openairdocs.org/ntsb/FTW88DRA05), Apr 4, 1988: Hiller UH-12E (N4029D), La Salle, TX, substantial damage

## FAA accident and incident reports (2)

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 19911011046049A](https://openairdocs.org/incident/19911011046049A), Oct 11, 1991: Hiller UH12E (N4029D), Palacios, TX, Substantial damage. Failed to unfasten a strap holding a skid on trailer. Helicopter fell over on its side during attempted liftoff.
- [Accident 19880404007519A](https://openairdocs.org/incident/19880404007519A), Apr 4, 1988: Hiller UH12E (N4029D), La Salle, TX, Substantial damage. Engine quit on a spray run. Attempted to autorotate. Hit and severed tail boom on ground contact. Fuel contaminated

## Other aircraft with N4029D

- [Cancelled 1965-06-18](https://openairdocs.org/deregistered/N4029D-1965-06-18): Cessna 182A, S/N 34729. Owner: [Marian Lauer](https://openairdocs.org/faa-owner/MARIAN%20LAUER), [San Diego, CA](https://openairdocs.org/faa-place/CA/San%20Diego)

---
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.