France said on Friday that it would download the black boxes from a Ukrainian plane shot down by an Iranian missile in January, creating a distance as to where they should be read.
French accident investigation agency BEA said it was acting at the request of Iran, which continues to be responsible under global rules for conducting an official accident investigation. after acknowledging that the Boeing 737 had been shot down by its troops .
The Ukrainian International Airlines flight was shot down on January 8 by an Iranian surface-to-air missile, killing 176 people in what Tehran called a "catastrophic error" at a time of heightened tensions with the United States.
Repair and download work for the cockpit voice and data recorders will begin on July 20, BEA said.
Aviation authorities in Canada, including 57 civilians who have died, have announced that they will send a team to Paris to participate.
A spokesperson for the National Transportation Safety Board in the United States said that the agency "was still participating in the investigation as a manufacturing state through our accredited representative in the United States", but did not did not specify whether officials would travel to France to participate.
Canada: too fast for diplomatic relations with Tehran
Iran wants Canada to restore diplomatic ties severed in 2012, but Tehran has not made the condition a condition for sending the recorders to France, said a Canadian official.
"It is not realistic to expect that we will have a discussion on this matter soon," said the official, who requested anonymity due to the sensitivity of the situation.
Canada's priorities were a full probe into the crash and compensation for the families of the victims, the officer added.
The Iranian envoy to the United Nations Aviation Agency said this month that the country's air accident investigation bureau had asked the BEA to read the black boxes, although this was followed contradictory ministerial statements.
Friday's announcement suggests that Western and Iranian officials will jointly attend the technical work, although someone who has been following the case does not rule out last-minute changes.
The BEA is used to helping sensitive probes when the tensions between the parties directly involved are high.