all 14 people on board. 14 August – Helios Airways Flight 522, the Boeing 737-31S Olympia, crashes into a mountain north of Marathon and Varnavas, Greece, killing all 121 passengers and crew. 16 August – West Caribbean Airways Flight 708, a McDonnell Douglas MD-82 operating on a charter flight, stalls at an altitude of and crashes near Machiques in the mountains of northwestern Venezuela, killing all 160 people on board. It is the deadliest air disaster in the history of Venezuela, the deadliest involving a McDonnell Douglas MD-82, and the third-deadliest involving an aircraft of the McDonnell Douglas MD-80 series. It will turn out to be the deadliest aviation accident of 2005. 23 August – Attempting a landing in high winds and torrential rain at Pucallpa Airport in Pucallpa, Peru, TANS Peru Flight 204, a Boeing 737-244 Advanced, strikes tree tops and crashes in a swamp, killing 40 of the 98 people on board. Looters steal parts of the wreckage to sell for scrap. September Northwest Airlines Cargo joins the Skyteam Cargo airline alliance. Intercontinental de Aviación ceases operations. 1 September – Norway's Accident Investigation Board for Civil Aviation and Railways –takes on the responsibility for the investigation of road accidents in Norway and is renamed the Accident Investigation Board Norway. 5 September Mandala Airlines Flight 091, Boeing 737-2Q3Adv with 117 people on board, crashes into a heavily populated residential area seconds after taking off from Polonia International Airport in Medan, Indonesia, destroying dozens of houses and cars. The crash is the third deadliest in Indonesian history, killing 100 people aboard the airliner and 49 people on the ground. It injures the 17 survivors aboard the plane and 26 people on the ground. The governor of North Sumatra, Rizal Nurdin, and the former governor, Raja Inal Siregar, are among the dead. An Antonov An-26B (NATO reporting name "Curl") registered as ER-AZT, owned by Transaviaservice of Georgia and operated by the Galaxie Corporation of the Democratic Republic of the Congo as a Kavatshi Airlines flight under a Georgian airworthiness certificate that had expired in September 2004, strikes a tree, crashes, and burns while landing in fog at Matari Airport in Isiro, Democratic Republic of the Congo, killing all 11 people on board. 9 September – An Antonov An-26B (NATO reporting name "Curl") operated by Air Kasai in the Democratic Republic of the Congo on a flight from Boende to Kinshasa crashes