The inquest was conducted on papers and the formal written chambers finding was issued on January 13.
In the finding, Mr Crerar said Senior Constable Julian Cahill, of Queenstown, said aerial searches were conducted.
Snr Const Cahill was satisfied that if Mr Bell had fallen during an ascent or descent of the east peak the search would have located him.
The traverse from the east to west peak was on bare rock on the north side and on snow and ice on the south.
"[Snr Const] Cahill noted two points on the traverse where it was very exposed and where a fall, without immediate arrest, would probably be fatal.
"The fall line descends to the Earnslaw Glacier, which is heavily crevassed, and a body which fell into any of the larger crevasses would be impossible to see from the air."
Snr Const Cahill estimated the chances of finding a climber or a body in most of the areas investigated was between 75% and 90%.
"On the Earnslaw Glacier side, below the traverse, the chances of detection were put by him at less than 50%."
While Mr Bell had been carrying a DeLorne locator beacon - which could be used to send and receive messages, had a tracking function and could be set to constantly identify position - he normally kept it turned off to conserve battery.
It has not been activated since January 9, 2015.
Mr Crerar found it was most likely Mr Bell had fallen during the traverse to the east peak of Mt Earnslaw and his body had been concealed in a crevasse or rocks.