The foggy weather may have led to disorientation of pilots in the Bipin Rawat copter | India News – Times of India

NEW DELHI: Tri-service investigation into Mi-17 V5 helicopter crash that kills Chief of Defense staff Bipin Rawat and 13 others are now almost complete, with “disorientation of pilots due foggy the weather ”remains one of the main causes of the accident near Coonoor in Tamil Nadu on 8 December.
The query, led by Air Marshal Manvendra Singh, has apparently ruled out any major structural flaws or technical hooks in the twin-engine Mi-17 V5 chopper that crashed. “Two to three items will be checked again before the investigation report is formally submitted next week,” a source said Saturday.
The fateful Mi-17 V5, which was relieved from the Sulur air base with Gen Rawat, his wife Madhulika, military adviser Brigades LS Lidder and others, had crashed just seven minutes before the planned landing at Wellington Heliport.
In technical terms, it is called an accident that occurs when the pilot becomes disoriented or “loses situational awareness” and inadvertently hits the ground, a mountain, a tree, a body of water or any other obstacle despite having full control of his helicopter or aircraft ” controlled flight in terrain (C-FIT) ”.
“A C-FIT crash usually occurs in bad weather or during the landing phase of a flight when the pilot is unable to recover his helicopter / aircraft in time to avoid the collision,” said an official.
TOI had previously reported that the combination of bad weather and hilly terrain in Nilgiri Hills was likely the main cause of the December 8 Mi-17 V5 accident.


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