But in 2013 his record was eclipsed by 80-year-old Japanese climber Yuichiro Miura.
Nepal's Min Bahadur Sherchan, 86, who had sought to reclaim the crown of the world's oldest Qomolangma summiteers, died at the mountain base camp on Saturday evening.
High winds and snow near the summit on Friday were slowing down the work but the first climb could happen as early as Sunday, said government official Gyanendra Shrestha, who is stationed at base camp.
His long rivalry with Mr Miura - a year his junior - included a 2013 attempt to reclaim the record aged 81 that had to be abandoned after late spring weather conditions worsened.
"I want to be the oldest person to scale Everest again to be an inspiration for people around the world", Sherchan had said, reported news agency PTI.More news: In pictures, these are the ten cleanest cities in India
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Sherchan's death has been confirmed by Nepal's Department of Tourism but little details have emerged due to poor communication with the base camp.
Sherchan first mastered the summit of Everest in 2008 when he was 76 earning him a Guinness World Record as the oldest man to scale such heights.
Before leaving for the mountain last month, Mr Sherchan said that once he had completed the climb and become famous, he meant to travel to areas of conflict to spread a message of peace. He said he did not suffer from any respiratory problems and his blood pressure was normal. As a Sherpa born in the mountains, he did not have any issue with high altitudes or lack of oxygen.
He went on to be an apple farmer and constructed roads and dams before settling to down to manage hotels in Kathmandu.
Only last week, famous Swiss climber Ueli Steck was lost to the Everest region.