This aircraft was later replaced by a Britten-Norman Islander. By 1974, over 30 airlines were flying to the Seychelles. Ground handling and all airport operations were being carried out by Aviation Seychelles Company, a company formed in 1973. Construction works for the substantial expansion of the airport started in July 1980 Due to the continuous increase in passenger traffic, a terminal building was built that could cater for 400 more arriving and 400 more departing passengers at any time. Parking bays for up to six large aircraft were built and a parking area for five light aircraft. In 1981, there was a gun battle at Seychelles International Airport, as British national Mike Hoare led a team of 43 South African mercenaries masquerading as holidaying rugby players in a coup attempt in what is known as the Seychelles affair. After their hidden weapons were discovered on arrival a skirmish ensued, with most of the mercenaries later escaping in a hijacked Air India jet. Development since the 2000s The years 2005/2006 brought further development of civil aviation in the Seychelles. The Civil Aviation Authority Act was enacted on 4 April 2006 for the corporatisation of the Directorate of Civil Aviation to Seychelles Civil Aviation Authority. Works started to upgrade and extend the terminal building, which has been further extended to handle at least five medium to large jet aircraft (e.g., Boeing 767 or Airbus A330) as well as six smaller jet aircraft (e.g. Boeing 737 or Airbus A320). Additional parking areas were made available to the north-east of the airport to handle the parking of charter, business, and long stay aircraft (e.g. some European flights arrive in the morning starting at 7 a.m. but do not depart until 10 p.m. onwards). This reduces jet-lag as any flight that leaves Seychelles at night will get to most Western European cities in the early morning and vice versa from the European cities to the Seychelles; it also provides sufficient rest for operating crews. The airport has been home to unmanned aerial vehicles operated by the United States Air Force and possibly the Central Intelligence Agency for operations over Somalia and the Horn of Africa. President of Seychelles James Michel apparently welcomed the presence of U.S. drones in Seychelles to combat Somalian piracy and terrorism, dating back to at least August 2009. At least two MQ-9 Reaper UAVs have crashed into the Indian Ocean near