Enstrom F 28F N213BL
7 August 2014 · Tomah, Wisconsin, United States · Serious injuries
Summary
On 7 August 2014 at about 14:46 local time, a Enstrom F 28F registered N213BL, operated by Paul Peterson Aviation LLC, was involved in an accident near Tomah, Wisconsin, 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 14:46
- Classification
- Accident
- Location
- Tomah, Wisconsin, United States
- Coordinates
- 43.9803, -90.5009
- Aircraft
- Enstrom F 28F
- Registration
- N213BL
- Category
- Helicopter
- Year built
- 1995
- Engines
- 1
- Operator
- Paul Peterson Aviation LLC
- Operating rule
- Part 137: Agricultural
- Purpose of flight
- Aerial Application
- Phase of flight
- Not recorded
- Route
- Tomah → Tomah
- Aircraft damage
- Substantial
- Weather
- VMC
- Light
- Day
- NTSB number
- CEN14LA412
People
1 person was seriously injured.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 1 | 0 | 1 | 0 | 0 |
Probable cause
A loss of engine power due to the malfunction of the No. 4 cylinder intake valve.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
The pilot felt a vibration in the cyclic control and he stated that the engine was running irregularly as he neared the intended application field on the agricultural application flight. He immediately elected to execute a precautionary landing to a cornfield; the corn crop was about 10 feet tall at the time. During the landing, the landing skids collapsed, and the tailboom was severed by a main rotor blade. A postaccident examination of the engine revealed that the No. 4 cylinder did not exhibit compression during crankshaft rotation. Further examination of the No. 4 cylinder revealed that the intake valve did not seat properly; a gap of about 0.015 inch existed when the valve should have been fully seated. Linear scoring was observed on the valve stem, and debris consistent with valve guide material was also recovered upon removal of the valve. No other anomalies with respect to the engine were observed. The engine had accumulated about 831 hours since overhaul. The helicopter maintenance records did not contain a record of any unresolved maintenance issues.
Quoted verbatim from the NTSB record.
Other Enstrom F-28F accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 6 May 2015 | Enstrom F-28F | Argyle, Texas, United States | US Aviation Group LLC | Serious injuries | - |
| 27 Mar 2013 | Enstrom F-28F | Twin Falls, Idaho, United States | Wybenga Steve | No injuries | - |
| 29 Aug 2011 | Enstrom F-28F | Menominee, Michigan, United States | Enstrom Helicopter Corp | No injuries | - |
| 22 Aug 2017 | Enstrom F 28F | Glendale, Arizona, United States | Airwest Aviation Academy LLC | No injuries | - |
| 6 Mar 2007 | Enstrom F-28F | Monmouth, Oregon, United States | - | No injuries | - |
| 9 May 2021 | Enstrom F-28F | Palmer, Alaska, United States | Talaheim Air Service LLC | No injuries | - |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 5 Jun 2014 | Jabiru Usa Sport J230-SP | Middleton, Wisconsin, United States | Read William Charles | No injuries | - |
| 8 Feb 2014 | Taylorcraft BC12 D | Hartford, Wisconsin, United States | Hoagland Carri EVE | No injuries | - |
| 11 Sep 2014 | Cessna 172M | Oxford, Wisconsin, United States | - | No injuries | - |
| 30 Jul 2014 | Render RV 9A | Oshkosh, Wisconsin, United States | - | Serious injuries | - |
| 31 Jul 2014 | Zimmerman BREEZY | Oshkosh, Wisconsin, United States | - | Fatal | 1 |
| 1 Aug 2014 | Mosquito XE | Oshkosh, Wisconsin, United States | - | No injuries | - |