"At least this time I expect the Navy to do the BoI honestly, unlike the earlier one in 1994," said Anuradha Paldhe at a press conference here.
The HC, which had earlier termed the death as "suspicious and mysterious", on June 7 ordered the Navy to conduct a fresh BoI into the incident.
Paldhe said she had written to Parrikar last week on the issue.
Amar died on September 21, 1993, while jumping from a helicopter during an exercise off Kakinada. The postmortem report, however, did not specify the cause of death.
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A native of Dombivli in Maharashtra's Thane district, he had joined the Navy as a seman.
Paldhe said she had full faith in the law of the land.
"I won't die without knowing who were the real culprits behind Amar's death. Naval officials have themselves described Amar as a diver who was 'cut above others', and several court judgments also noted the mystery and negligence surrounding his death," she said.