Nippon Cargo Airlines has extended the grounding of its fleet, with operations not expected to restart for at least another week.
Operations were suspended on 17 June to verify all maintenance records were accurate and complete.
At the time the Japanese airline anticipated operations would be suspended for about one week but verifying records has taken longer than expected.
In a statement on its website, Nippon Cargo Airlines says: “Since we will not restart the network until we can conclude the record checking process, the first aircraft will resume operation in more than another week. The rest of the aircraft operation will resume in sequence as soon as the aircraft safety is confirmed.”
It has also apologised to customers for the inconvenience, and will resume operations as soon as possible.
The Tokyo-based airline was founded in 1978 and has a fleet of five Boeing 747-400 Freighters and eight Boeing 747-8 Freighters.