"Fortunately, we have recovered the cockpit voice recorder and the flight data recorder. And, I think, in a few days' time, we will get to know absolutely as to what exactly happened," he told reporters after interacting with IAF officers and men here.
He said that at this juncture, it would be premature for him to comment as to the reason behind the crash -- if it was the weather or a technical problem.
Browne said he had been told there were no survivors among the 20 people on board -- five from IAF, six from Indo-Tibetan Border Police (ITBP) and nine from National Disaster Response Force (NDRF).
Asked if the envelope of safety had been pushed, he said, "I won't say that anything was pushed... In the mountains, especially during the monsoon, weather is always an issue.
But, at this point of time, we are not quite sure if it was the weather or a technical problem (that led to the crash)."
He said during rescue missions the risk factor is always considered very closely and it is reviewed almost on a daily basis.
The IAF pilots, he said, were highly qualified and absolute competent in carrying out such missions and the morale of the force is extremely high. The performance of the personnel of the IAF and other agencies involved has been "absolutely marvellous".
Browne said if the IAF got three to four days of good weather, it will be able to complete its mission.
"If the weather starts improving by Friday or so, then by Monday, Tuesday we should have all this (task) finished," he said. .