ASN Wikibase Occurrence # 146705
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| Date: | Thursday 12 July 2012 |
| Time: | 10:00 |
| Type: |  McDonnell Douglas MD 500E (369E) |
| Owner/operator: | HeliPro |
| Registration: | OH-HJR |
| MSN: | 0475E |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | near Kastire -
 Latvia
|
| Phase: | Approach |
| Nature: | Agricultural |
| Departure airport: | |
| Investigating agency: | TAIIB |
| Confidence Rating: |  Accident investigation report completed and information captured |
A Hughes 369E helicopter, registration OH-HJR incurred damage during a forced landing near Kastire (N56.21.160; E26.86.220), local community Rušona Riebiņi region, Latvia after an engine in-flight shutdown. The helicopter was being used to trim trees using saw apparatus that is suspended under the aircraft and connected to the cargo hook. According to pilot’s information at morning on the day of the accident, the pilot made helicopter pre-flight check and everything operates normal. Pilot took off and flew to sawing place about 200 m from landing place. After approximately 35-40 minutes working he called by radio ground staff and informed that he goes to landing place. When he approached approximately 50 m from landing place at height about 40 m the pilot heard that engine noise reduced, helicopter begins to roll, turned 90 degrees to the left. The pilot tried to increase airspeed by pushing cyclic forward and collective down. After that for a very short moment helicopter did flare but at the next moment the machine descended and struck the ground heavily. The helicopter came to rest laying on its left side, breaking the forward and aft landing skid struts and left skid tube. The tail boom had separated from helicopter and the main rotor blades were separated from rotor and threw away from helicopter due to ground contact. The pilot, sole person on board, was not seriously injured.
There was not fire. The helicopter was owned and being operated by company HeliPro Oy, Finland and was being used for tree trimming along power lines. Day visual meteorological conditions prevailed for the flight.
Direct cause:
The direct cause of the accident of Helicopter MD369E, registration OH-HJR was engine 250-C20R/2 failure – loss of power.
Root cause:
The root cause of the accident of Helicopter MD369E, registration OH-HJR was bearing No.1 of compressor engine 250-C20R/2 failure, probably due to large roller excursions that results in high roller-to-raceway contact stress, spalling of the rollers and raceways, and cyclical loading of the cage leading to fatigue cracking.
Contributing cause:
Loss of power when the helicopter was on final approach to the landing area, at low airspeed and low height above uneven ground.
Accident investigation:
 |
|
Sources:
http://www.delfi.lv/archive/riebinu-novada-avarejis-helikopters.d?id=42504926
http://web.archive.org/web/20120820085433/http://rus.delfi.lv:80/news/daily/criminal/v-latgalii-vertolet-upal-v-boloto.d?
Final report on the accident: http://www.taiib.gov.lv/uploads/Final%20Report%205-12.pdf
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 12-Jul-2012 07:47 | jmskydancer | Added |
| 12-Jul-2012 11:55 | amid4 | Updated [Aircraft type, Registration, Cn, Operator, Source] |
| 27-May-2014 12:43 | Anon. | Updated [Aircraft type, Registration, Cn, Operator, Source] |
| 23-Oct-2019 10:07 | harro | Updated [Aircraft type, Operator, Location, Phase, Narrative, Accident report, ] |
Corrections or additions? ... Edit this accident description
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