# Accident 19990616007139A: Hiller UH12C, Delphos, OH, June 16, 1999

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: June 16, 1999
- Place: Delphos, OH
- Damage: Destroyed
- Location: 40.8395° N, 84.3296° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=40.8395&lon=-84.3296&mi=10
- Aircraft: N57CR, a cancelled registration (https://openairdocs.org/deregistered/N57CR-2014-06-13) (OpenAirDocs)
- Registry model: Hiller UH-12C (registry code 4360116, https://openairdocs.org/model/hiller-uh-12c) (OpenAirDocs)
- Registry engine: Franklin 6VS-335 series (registry code 27040, https://openairdocs.org/engine/franklin-6vs-335-series) (OpenAirDocs)
- Reported make and model: HILLER UH12C
- NTSB investigation: [NTSB NYC99LA146](https://openairdocs.org/ntsb/NYC99LA146) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19990616007139A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

1956 HILLER-WORLD HELICOPTERS UH-12C HELICOPTER LOST POWER, AND THE PILOT AUTO-ROTATED THE ACFT, THE MAIN ROTOR FLEXED ON LANDING AND SEVERED THE TAIL OF THE ACFT, OTHER CIRCUMSTANCES ARE UNKNOWN. (-23)PILOT DEPARTED SIDNEY, OH, ENROUTE TO DEFIANCE, OH., AFTER ENGINE CHANGE.  HELICOPTER STARTED TO RUN ROUGH AND LOST POWER APPROX. 25' AGL AFTER EXECUTING AN AUTOROTATION.  IMPACT ROTOR FLEXED AND SEVERED THE TAIL BOOM.  ENGINE AND ACCESSORY CASE CRACKED AT IMPACT ALSO.

## The NTSB's investigation of this event (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 NYC99LA146](https://openairdocs.org/ntsb/NYC99LA146), Jun 16, 1999: Hiller UH-12C (N57CR), Delphos, OH, substantial damage. Probable cause: A blocked fuel line, from an unknown object, that resulted in fuel starvation, and total loss of engine power. A factor in the accident was the pilot's failure to maintain rotor rpm during the…

## Other reports on N57CR (1)

Matched to the same aircraft by N-number and date.

- [Accident 19810715042299A](https://openairdocs.org/incident/19810715042299A), Jul 15, 1981: Hiller UH12C (N57CR), Burleson, TX, Substantial damage. Engine lost power after liftoff. Aborted. Helicopter rolled on impact. Fouled igniter. Engine gave prior warning.

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. For accidents, the NTSB's own investigation is the fuller record.

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