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The two Emirates airline pilots involved in last month's emergency landing at Melbourne Airport have resigned.
Emirates flight EK407 to Dubai was forced to return to Melbourne Airport and make an emergency landing on March 21 after the Airbus A340's tail scraped the runway during take-off.
The flight, with 224 passengers on board, was forced to dump fuel before attempting to land. The plane landed without incident and no passengers were injured.
Emirates would not comment on the investigation into the incident, but confirmed that the pilots had submitted their resignations.
A spokesman for the Australian Transport Safety Bureau said the investigation was still in the early stages but a preliminary report would be released about 30 days after the initial incident.
"We will be looking at the flight data records, getting data off that, interviewing the crew, interviewing the company representatives, inspecting the runway and aircraft," the bureau's spokesman Ian Brokenshire said at the time of the incident.
He said a number of factors could cause a "tail hit", among them weather conditions, loading issues and handling.
"It is a hazard, particularly on the longer aircraft," he said.