Kaman K-1200 N164KA
4 November 1999 · Emida, Idaho, United States · No injuries
Summary
On 4 November 1999 at about 18:00 local time, a Kaman K-1200 registered N164KA, operated by Mountain West Helicopters, LLC, was involved in an accident near Emida, Idaho, United States. One person was on board and nobody was 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 18:00
- Classification
- Accident
- Location
- Emida, Idaho, United States
- Coordinates
- 47.1992, -116.5499
- Aircraft
- Kaman K-1200
- Registration
- N164KA
- Category
- Helicopter
- Engines
- 1
- Operator
- Mountain West Helicopters, LLC
- Operating rule
- Part 133: Rotorcraft Ext. Load
- Purpose of flight
- Unknown
- Phase of flight
- Not recorded
- Aircraft damage
- Substantial
- Weather
- VMC
- Light
- Day
- NTSB number
- SEA00FA015
People
Nobody was injured.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 1 | 0 | 0 | 0 | 1 |
Probable cause
Failure of the splined engine adaptor as a result of torsional overstress. Factors include a worn freewheeling clutch assembly.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
Shortly after departure, during the initial climb, the helicopter experienced a sudden loss of power and the pilot initiated a forced landing to a nearby road. Post-accident inspection of the transmission assembly revealed that the splined engine adaptor was fractured due to a torsional overstress imposed on the transmission by the engine. It was determined that the adaptor fracture was secondary to another failure further along in the drive train or transmission. Further examination revealed that the helicopter's freewheeling sprag clutch assembly (located at the drive shaft input to the main transmission) exhibited signs of significant wear to include smearing, non-uniform surface wear and cam deformation. Damage or dragging in this assembly could account for the overstress fracture of the adaptor.
Quoted verbatim from the NTSB record.
Other Kaman K-1200 accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 11 Jul 2000 | Kaman K-1200 | Cusick, Washington, United States | - | Serious injuries | - |
| 21 Apr 1998 | Kaman K-1200 | La Grande, Oregon, United States | - | No injuries | - |
| 10 Dec 2000 | Kaman K-1200 | Prineville, Oregon, United States | Grizzly Mountain Aviation | No injuries | - |
| 27 Jan 1998 | Kaman K-1200 | Bloomfield, Connecticut, United States | - | Minor injuries | - |
| 14 Nov 2001 | Kaman K-1200 | Bloomfield, Connecticut, United States | - | Minor injuries | - |
| 26 Jul 2003 | Kaman K-1200 | Keller, Washington, United States | US Department of Interior (Bureau Indian Affairs) | Fatal | 1 |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 12 Jul 1999 | Air Tractor AT-502 | Shelley, Idaho, United States | - | Fatal | 1 |
| 3 Jul 1999 | Piper PA-31-350 | Garden Valley, Idaho, United States | Salmon Air, Inc. | Minor injuries | - |
| 12 Sep 1999 | Gentry SERIES 5 VIXEN | Naples, Idaho, United States | Daniel Byler | Fatal | 2 |
| 13 Mar 1999 | Piper PA-28-140 | Rexburg, Idaho, United States | Dean R. Hathaway | Serious injuries | - |
| 15 Sep 1999 | Stinson 108-2 | Burley, Idaho, United States | - | No injuries | - |
| 18 Sep 1999 | Pitts 11 | Iona, Idaho, United States | Noble, James, K. | Fatal | 1 |