Singapore Airlines Limited is engaged in passenger and cargo air transportation, engineering services, training of pilots, air charters and tour wholesaling and related activities. The Company's segments include airline operations, engineering services, cargo operations and Others. The airline operations segment provides passenger air transportation. The engineering services segment is in the business of providing airframe maintenance and overhaul services, line maintenance, technical ground handling services and fleet management. The engineering services segment also manufactures aircraft cabin equipment, refurbishes aircraft galleys; provides technical and non-technical handling services, and repairs and overhauls hydro-mechanical aircraft equipment. The cargo operations segment is involved in air cargo transportation and related activities. The Others segment includes other services provided by the Company, such as the training of pilots, air charters and tour wholesaling.