# Accident 19890720024199A: Hiller UH12E, Black River Fal, WI, July 20, 1989

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: July 20, 1989, 08:40 local time
- Place: Black River Fal, WI
- Damage: Destroyed
- Phase of flight: Forced/Precautionary Landing
- Operating rules: Agricultural (Part 137)
- Operator: NHJG
- Location: 44.2909° N, 90.8395° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=44.2909&lon=-90.8395&mi=10
- Aircraft: N48313, a cancelled registration (https://openairdocs.org/deregistered/N48313-2012-12-13) (OpenAirDocs)
- Registry model: Hiller H-23D (registry code 4360120, https://openairdocs.org/model/hiller-h-23d) (OpenAirDocs)
- Registry engine: Lycoming VO-540 series (registry code 41534, https://openairdocs.org/engine/lycoming-vo-540-series) (OpenAirDocs)
- Reported make and model: HILLER UH12E
- Reported engine: LYC VO540C2A
- Fatal injuries: 0
- Pilot flight hours: 6,314 total, 366 in this make and model, 56 in the last 90 days
- NTSB investigation: [NTSB CHI89DEP07](https://openairdocs.org/ntsb/CHI89DEP07) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19890720024199A

## Narrative

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

THROTTLE BROKE AFTER PICK UP OF SLING LOAD. FAILED TO JETTISON. CRASH LANDED ON HOPPER. THROTTLE WORN AND FRAYED.

## 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 CHI89DEP07](https://openairdocs.org/ntsb/CHI89DEP07), Jul 20, 1989: Hiller UH-12E (N48313), Blackriverfalls, WI, destroyed. Probable cause: PILOT-IN-COMMAND'S FAILURE TO JETTISON THE EXTERNAL LOAD FOLLOWED BY HIS MISJUDGEMENT OF DISTANCE TO AVOID COLLISION WITH THE EXTERNAL LOAD.

## Other reports on N48313 (2)

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

- [Accident 19840709030809A](https://openairdocs.org/incident/19840709030809A), Jul 9, 1984: Hiller H23D (N48313), Neelyville, MO, Destroyed. Reported failure between engine and rotor drive. Rolled on forced landing. Yoke control fractured. No metal fatigue
- [Accident 19790501005429A](https://openairdocs.org/incident/19790501005429A), May 1, 1979: Hiller UH12D (N48313), Drew, MS, Substantial damage. Pilot flew into wire while conducting agricultural operations.

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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