Havana: As Cubans held a funeral for an art instructor and her small child who were killed in Cuba's worst plane crash since 1989, authorities revealed that the Mexican charter company whose 39-year-old plane crashed had been the subject of two serious complaints about its crews' performance.

The mother and child were the first of 67 Holguin residents to be brought home for burial out of the 110 people who died in the fiery crash in Havana over the weekend.

Meanwhile, Mexico's government saidits National Civil Aviation Authority would carry out an operational audit of Damojh airlines to see if its "current operating conditions continue meeting regulations" and to help collect information for the investigation into Friday's crash in Cuba.

The plane that crashed, a Boeing 737, was barred from Guyanese airspace last year after authorities discovered that its crew had been allowing dangerous overloading of luggage on flights to Cuba, Guyanese Civil Aviation Director Capt. Egbert Field said.

The plane and crew were being rented from Mexico City-based Damojh by EasySky, a Honduras-based low-cost airline. Cuba's national carrier, Cubana de Aviacion, was also renting the plane and crew in a similar arrangement known as a "wet lease".