INSUBCONTINENT EXCLUSIVE:
KATHMANDU, FEBRUARY 6The analysis of the flight data
recorder and the cockpit voice recorder retrieved from the crash site of Yeti Airlines 9N-ANC aircraft in Pokhara has revealed that
propellers of both the plane's engines were on feather during the base leg of the landing procedure.
Analysis of data recorder completed
Black box recovered from Yeti Airlines
crash site
Feather is employed if an engine must
In feathering, blades are turned so that the leading edges are pointed essentially in the direction of flight
In this position, aerodynamic forces on the propeller result in a low drag condition.
Usually, a propeller is feathered
when the engine fails to produce the power needed to turn the propeller.According to Deepak Prasad Bastola, member of the investigation
commission formed after the crash, further investigation to ascertain why this happened and if the acci-dent was a technical failure or a
human error is still under way
After that probe, the commission will release further reports, said Bastola.According to the investigation commission statement, the flight
data recorder and the cockpit flight recorder were analysed by representatives of Transport Safety Investigation Bureau of Singapore, BEA
France, TSB Canada, P -W Canada, and European Union Aviation Safety Agency (EASA)
They also conducted studies from the technical and human perspective through ATR simulators in Singapore
The commission has also started further investigation to find out why both the propellers were on feather.The commission said it would take
time to submit the final report, adding that it was also working on submitting a preliminary report with recommendations to increase flight
safety after analysing the information and data received so far.A version of this article appears in the print on February 7, 2023, of The
This article first appeared/also appeared in https://thehimalayantimes.com