ASN logo
ASN Wikibase Occurrence # 146705
Last updated: 22 January 2022
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information. If you feel this information is incomplete or incorrect, you can submit corrected information.

Date:12-JUL-2012
Time:10:00
Type:Silhouette image of generic H500 model; specific model in this crash may look slightly different
McDonnell Douglas MD 500E (369E)
Owner/operator:HeliPro
Registration: OH-HJR
MSN: 0475E
Fatalities:Fatalities: 0 / Occupants: 1
Other fatalities:0
Aircraft damage: Substantial
Category:Accident
Location:near Kastire -   Latvia
Phase: Approach
Nature:Agricultural
Departure airport:
Destination airport:
Investigating agency: TAIIB Latvia
Narrative:
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.

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

Accident investigation:
cover
  
Investigating agency: TAIIB Latvia
Status: Investigation completed
Duration: 1 year and 9 months
Download report: Final report


Revision history:

Date/timeContributorUpdates
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