R-66 RA-05773 07.07.2015

Accident date	07.07.2015
Investigation status
Aircraft registration number	RA-05773
Place of aircraft departure	bank of Temnik river
Airport of departure
Intended destination	bank of Snazhnaya river
Intended Airport of arrival
Accident site	Russia, 50 km to the South railway station of the city of Baikalsk, Slyudyanka district of Irkutsk region
Latitude	N 51°02′31,50″
Longitude	E 104°19′47,31″
Aircraft type	Robinson R66
Serial №	0495
Aircraft operator
Aircraft owner	"Baikal-Trek" LLC
The date of the completion of the investigation (report)	25.08.2016
Number of fatalities	0
Victims accuracy
Degree of aircraft destruction	aircraft substantially damaged
Report	report_ra-05773.pdf (1.77 MB)
Aviation type	GA
Works type
Note

09 july 2015

     Non-fatal accident with R-66 RA-05773 helicopter owned by "Baikal-Trek" LLC occurred at the bank of Snazhnaya river, Republic of Buryatia (in 49 km from Baykalsk town, Slyudansky District, Irkutsk Region, RF) on July 7, 2015. According to the available information the pilot and 2 passengers were on board, the aircraft sustained substantial damage.
     The Interstate Aviation Committee has assigned the Investigation team of this accident in accordance of the Russian Aviation Legislation. The Investigation team has started its work.

05 september 2016

The Interstate Aviation Committee Investigation team has completed the investigation of the accident with Robinson R-66 RA-05773 helicopter owned by "Baikal Track" Ltd occurred in the Irkutsk region on July 7, 2015.

The accident with Robinson R-66 RA-05773 helicopter was caused during landing at site selected while in flight most probably due to PIC errors in helicopter control.

Most probably the following factors contributed to the accident:

- non-inspection of the site selected while in flight by PIC;

- disproportional helicopter control actions by PIC resulted in rotor speed decay below permissible limits;

- abrupt deceleration and pitch-down angle resulted in vertical speed increase and helicopter hard touchdown.

The appropriate safety recommendations based on the investigation results were presented.