On the sideline of the ICAO general assembly in Montreal Canada, Nigeria's Minister of Aviation Hadi Sirika was quoted as saying Nigeria would consider buying China's newly-certified C919 passenger jet as it grows the country's carrier Nigeria Air to 30 planes by around 2025. "We haven't looked at that C919. But if it's as good as the others then why not". The new airline would have a mixture of Airbus and Boeing planes when fully operational. He also added the carrier is also willing to look at the Chinese narrow body jet, which Chinese regulators certified on Friday.  The first C919 aircraft, designed to compete with popular single-aisle models made by Airbus and Boeing, will be delivered by the end of the year, state Xinhua News Agency said.It remains unclear when the plane might be certified by the United States or Europe, opening the way to sales in most foreign markets, but industry analysts say it will be up to a decade before China can seriously