Nippon Cargo Airlines (NCA) will resume operations tomorrow (5 July) after suspending flights due to maintenance issues.

The Japanese airline, which has a fleet of five Boeing 747-400Fs and eight Boeing 747-8Fs, suspended operations on 16 June following the discovery of inappropriate maintenance records concerning the lubricating oil supply to aircraft parts.

The fleet was expected to be grounded for a week but operations remained suspended for longer than expected because it took longer to verify records than anticipated.

The investigation into the first aircraft has been completed and it will resume operations on 5 July with a flight from Tokyo’s Narita airport to Shanghai’s Pudong airport.

NCA says the other aircraft will resume operations “as soon as the aircraft safety is confirmed”.

In a statement on its website, NCA says: “We sincerely apologise for the inconvenience and worries that we caused our customers. We will do our utmost effort to check safety for resuming operation as quickly as possible.”