Hiller UH-12E N5594N
13 May 1989 · Mack, Colorado, United States · Serious injuries
Summary
On 13 May 1989 at about 13:48 local time, a Hiller UH-12E registered N5594N was involved in an accident near Mack, Colorado, United States. One person was on board and one was seriously injured. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.
The record
- Date
- at 13:48
- Classification
- Accident
- Location
- Mack, Colorado, United States
- Coordinates
- 39.2198, -108.8709
- Aircraft
- Hiller UH-12E
- Registration
- N5594N
- Category
- Helicopter
- Engines
- 1
- Operator
- Not recorded
- Operating rule
- Part 137: Agricultural
- Purpose of flight
- Aerial Application
- Phase of flight
- Not recorded
- Route
- Mack → Unknown
- Aircraft damage
- Substantial
- Weather
- VMC
- Light
- Day
- NTSB number
- DEN89DTM02
People
1 person was seriously injured.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 1 | 0 | 1 | 0 | 0 |
Probable cause
THE PILOT'S FAILURE TO MAINTAIN PROPER ALTITUDE DURING A SWATH RUN.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
THE PILOT STATED THAT DURING A SWATH RUN HE LET THE HELICOPTER GET TOO LOW AND THE SKIDS CONTACTED THE ALFALFA CROP FOLLOWED BY THE SPRAY APPARATUS. THE PILOT WAS UNABLE TO GAIN ALTITUDE AND THE HELICOPTER CONTINUED TO DESCEND INTO THE GROUND AND ROLLED OVER. AN EYE-WITNESSES CONCURRED WITH THE PILOT'S STATEMENT BUT DECLINED TO GIVE A WRITTEN STATEMENT.
Quoted verbatim from the NTSB record.
Other Hiller UH-12E accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 29 Nov 1989 | Hiller UH-12E | Raymond, Washington, United States | Glacier Helicopters | No injuries | - |
| 9 Mar 1989 | Hiller UH-12E | Golden, Colorado, United States | Harry G. Laforge | No injuries | - |
| 11 Oct 1989 | Hiller UH-12E | Yuma, Arizona, United States | West Farm Air Inc. | Serious injuries | - |
| 16 Aug 1989 | Hiller UH-12E | Tolleson, Arizona, United States | Moseley Aviation, Inc. | Minor injuries | - |
| 26 Apr 1989 | Hiller UH-12E | Salinas, California, United States | - | Minor injuries | - |
| 28 Sep 1989 | Hiller UH-12E | Hudsonville, Michigan, United States | - | Minor injuries | - |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 4 Jan 1989 | Cessna 172 | Longmont, Colorado, United States | Denver Air Center | No injuries | - |
| 6 Jan 1989 | Piper PA-31T | Craig, Colorado, United States | Cummins Power Inc | No injuries | - |
| 18 Jan 1989 | Beechcraft V35B | Broomfield, Colorado, United States | - | Minor injuries | - |
| 28 Jan 1989 | Cessna P210N | Durango, Colorado, United States | - | No injuries | - |
| 8 Feb 1989 | Piper PA-18-150 | Boulder, Colorado, United States | Boulder Flying Service | No injuries | - |
| 9 Feb 1989 | Cessna 152 | Gill, Colorado, United States | - | No injuries | - |