Hiller UH-12E N61436
30 October 2008 · Powder River, Wyoming, United States · Minor injuries
Summary
On 30 October 2008 at about 14:40 local time, a Hiller UH-12E registered N61436, operated by Wyoming Air Corp, was involved in an accident near Powder River, Wyoming, United States. 2 people were on board and one had minor injuries. 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 14:40
- Classification
- Accident
- Location
- Powder River, Wyoming, United States
- Coordinates
- 43.0356, -107.0811
- Aircraft
- Hiller UH-12E
- Registration
- N61436
- Category
- Helicopter
- Engines
- 1
- Operator
- Wyoming Air Corp
- Operating rule
- Part 91: General Aviation
- Purpose of flight
- Aerial Observation
- Phase of flight
- Not recorded
- Route
- Powder River → Powder River
- Aircraft damage
- Substantial
- Weather
- VMC
- Light
- Day
- NTSB number
- WPR09LA028
People
1 person had minor injuries.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 2 | 0 | 0 | 1 | 1 |
Probable cause
A flight control system malfunction while the helicopter was maneuvering at low altitude due to the failure/separation of the rotor blade control tube.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
While maneuvering about 50 feet above ground level during an aerial observation flight, one blade associated with the control rotor assembly separated from the helicopter, and a violent vibration started. Unable to maintain control, the pilot made a forced landing on the underlying sloping terrain, and the helicopter rolled over. During the subsequent inspection of the rotor system, one of the two control rotor blade assemblies was found separated from the rotor head. A rotor blade control tube had cracked and broken off outboard of the two attachment bolts. The component had been operated 21 hours since receiving its last inspection. The reason for the cracking and separation of the control tube could not be determined.
Quoted verbatim from the NTSB record.
Other Hiller UH-12E accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 15 Aug 2008 | Hiller UH-12E | Cokato, Minnesota, United States | - | No injuries | - |
| 4 Apr 2008 | Hiller UH-12E | La Porte, Texas, United States | Paul Legris | Minor injuries | - |
| 7 Apr 2008 | Hiller UH-12E | Quinton, Oklahoma, United States | - | No injuries | - |
| 16 Sep 2008 | Hiller UH-12E | Naruna, Virginia, United States | Summit Helicopters Inc. | No injuries | - |
| 11 Jun 2009 | Hiller UH-12E | Stringtown, Oklahoma, United States | Texas Air Cargo, Inc. | No injuries | - |
| 24 Nov 2007 | Hiller UH-12E | Yuma, Arizona, United States | - | No injuries | - |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 10 Jun 2008 | Mooney M20J | Evanston, Wyoming, United States | - | No injuries | - |
| 17 Dec 2008 | Cessna 210 | Sheridan, Wyoming, United States | Daleray Madewell | No injuries | - |
| 12 Jan 2008 | Cessna 172M | Pine Bluffs, Wyoming, United States | - | No injuries | - |
| 30 Jul 2008 | Fowler SX300 | Cheyenne, Wyoming, United States | - | No injuries | - |
| 24 Jun 2008 | Cirrus SR22 | Laramie, Wyoming, United States | - | No injuries | - |
| 27 Dec 2008 | Cessna 208B | Rock Springs, Wyoming, United States | Corporate Air | No injuries | - |