The Canada-Newfoundland and Labrador Offshore Petroleum Board is reviewing additional information provided by offshore oil operators.
Night flights were suspended as a result of the Wells Inquiry into offshore helicopter safety following the crash of Cougar Flight 491 in March 2009.
The operators provided the regulator with a report last fall, supporting their request to resume night flights.
The offshore board responded with a request for further information.
The regulator says that information has been submitted and is being reviewed before a final decision is made.