On 29 July 2011, EgyptAir Flight 667, a Boeing 777 on a scheduled passenger flight from Cairo, Egypt, to Jeddah, Saudi Arabia, suffered a cockpit fire on the ground at Cairo Airport, while preparing to depart. There were no fatalities, but seven people were treated for smoke inhalation. The aircraft was damaged beyond economic repair.

Aircraft emergency oxygen systems or air masks are emergency equipment fitted to pressurized commercial aircraft, intended for use when the cabin pressurisation system has failed and the cabin altitude has climbed above a safe level. It consists of a number of individual yellow oxygen masks stored in compartments near passenger seats and near areas like lavatories and galleys, and an oxygen source, like a centralized gaseous cylinder or decentralized chemical oxygen generator.