TIGER Airways' pilots were forced to prove their flying ability after the airline was grounded last month, and not all of them passed.
Mr McCormick said the number of staff employed by Tiger was not sufficient.
"We certainly didn't have confidence the (110) pilots were at a standard we required," he said.
"As a result, we had to put them all through a test, it was a normal simulator test you'd expect any airline pilot to be able to pass. There were some failures."
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Tiger Airways pilots fail flying test, airline to resume services on Friday | News.com.au