A Cougar helicopter that was grounded on an oil rig since Wednesday is scheduled to begin its flight back in St. John's on Saturday afternoon.

The aircraft ran into a problem with one of its flight systems while on the Henry Goodrich oil platform.

A spokesperson for Husky Energy said the crew were doing pre-flight checks when there was a problem with the chopper's "Stability Augmentation System."

Follow-up work will commence on the helicopter once it is back at base.

The crew is waiting on suitable weather conditions offshore before heading back to the island.

Workers who were supposed to fly on the chopper were sent back to shore by an offshore supply boat earlier in the week.

The Henry Goodrich is located in the White Rose field, approximately 14-16 hours away from St. John's.