Tabula Rasa (Lost) injuries he sustained during the Oceanic Flight 815 plane crash. The episode when broadcast in the United States was viewed by 16.54 million people and received mixed reviews from critics. It is the first episode to feature a 'Previously on Lost' segment, a clip shown at the beginning of each episode summarizing the recent events of the show. The episode receives its name from the philosophical idea of "tabula rasa", meaning blank slate, a concept which is brought in one of the episode's final lines, when Jack tells Kate that all of the Flight 815 survivors should be allowed to
Shanwick Oceanic Control Aviation Organisation (ICAO). ICAO divides such airspace into flight information regions, parts of which may be deemed controlled airspace and, where appropriate, classified as an Oceanic Control Area (OCA). The flight control (procedural ATC) aspect within the Shanwick OCA is the responsibility of the United Kingdom and is provided by National Air Traffic Services (NATS) from the Prestwick Centre and the voice communication aspect is shared between the CDOs (clearance delivery officers) based at Prestwick Centre and the Irish Aviation Authority (IAA) from Shannon Aeradio, based in Ballygirreen Radio Station. Shanwick Control further delegate oceanic control of traffic in the