Question: What was the Filipino-owned regional boutique airline company, which owns an airstrip at El Nido Airport, formerly known as?

Context paragraphs:
AirSWIFT: AirSWIFT (formerly Island Transvoyager) is a Filipino-owned regional boutique airline company with a permit to operate domestic scheduled and non-scheduled air transportation services.  It also serves the aircraft transportation requirements of its affiliated company, El Nido Resorts.

Katrina Halili: Maria Katrina Iren Pe Halili (born January 4, 1986),in Quezon City,El Nido Palawan, Philippines known professionally as Katrina Halili is a Filipina actress, commercial model and businesswoman.  She made her screen debut via "StarStruck", and became more popular until playing the antagonist roles in "Darna", "Majika", "MariMar", "Sa Piling ni Nanay", "D' Originals" and "Destiny Rose" and becoming the protagonist in "One Night Only", "Gagambino", "Magdusa Ka", Niño, and her roles in Magpakailanman.

Tourism in the Philippines: Tourism is an important sector for the Philippine economy.  In 2015, the travel and tourism industry contributed 10.6% to the country's GDP.  The Philippines is an archipelagic country composed of 7,641 islands with 82 provinces divided in 18 regions.  The country is known for having its rich biodiversity as its main tourist attraction.  Its beaches, mountains, rainforests, islands and diving spots are among the country's most popular tourist destinations.  The country's rich historical and cultural heritage are also one of the attractions of the Philippines.  Popular destinations among tourists are El Nido in Palawan, Davao, Boracay, Siargao, Cebu, Manila and many more.

Cuyo Airport: Cuyo Airport (IATA: CYU, ICAO: RPLO) is an airport serving the municipalities of Magsaysay, Cuyo, and Agutaya.  It is located within the boundaries of Barangay Lucbuan and Emilod in the town of Magsaysay in the main island of Cuyo Island.  It is one of several airports in Palawan, the other being Puerto Princesa Airport, Cesar Lim Rodriguez Airport, El Nido Airport and Francisco Reyes Airport in the municipality of Busuanga.  It is classified as a feeder airport by the Civil Aviation Authority of the Philippines, a body of the Department of Transportation that is responsible for the operations of not only this airport but also of all other airports in the Philippines except the major international airports.

Estadio B'Air: Estadio Nido de los Aguilas, officially known due to sponsorship as Estadio B'Air, is a stadium in Mexicali, Mexico.  It is primarily used for baseball and serves as the home stadium for Águilas de Mexicali, members of the LMP.  The first home of the team was the legendary Estadio Parque Hidalgo where the Mexicali teams played in leagues affiliated to the National Association of Professional Baseball Leagues from 1948 to 1958.  Since 1976 El Nido was used to venture into the mighty Mexican Pacific League's winter circuit.  The property is now known by the name of Estadio B'Air, and has a capacity of over 19,500 spectators.  Its modern facilities include a club house with all amenities for the players and coaches, with a lounge, dining room, jacuzzi baths and gymnasium space for a first-level weights.  For its part, the dugout is the most comfortable and suitable to the demands of professional baseball today.

El Nido, Hamilton: El Nido is a heritage-listed detached house at 194 Kingsford Smith Drive, Hamilton, City of Brisbane, Queensland, Australia.  It was designed by Eric Percival Trewern and built from 1928 onwards by Burton Hollingsworth.  It is also known as Cassa Anna.  It was added to the Queensland Heritage Register on 28 February 2003.

Cagdanao: Cagdanao is an island in the province of Palawan in the Philippines.  The island is located 29 km east from the town of Taytay in northern Palawan and 13 km from El Nido Airport.

Sonia López: Sonia López (January 11, 1946—) is a Mexican singer, popular in the 1960s for her tropical hits.  Known as ""La Chamaca de Oro"," she is best known for hits such as "Corazón de Acero", "El Ladrón", "El Nido", "Canela Pura"'De México a La Habana", "Mi caprichito", and her work with Sonora Santanera.

Buena Suerte, Palawan: Buena Suerte (officially the Barangay Buena Suerte), or more known as Zone II, is one of the eighteen barangays comprising the Municipality of El Nido in the province of Palawan in the Philippines.  Its name literally means "Good Luck" in Spanish.

El Nido Airport: El Nido Airport (Filipino: "Paliparan ng El Nido" ) (IATA: ENI) , also known as Lio Airport, is an airport serving the general area of El Nido, located in the province of Palawan in the Philippines.  It is located in the barangay of Villa Libertad, about 4 km from the poblacion (town proper) of El Nido.  This concrete airstrip is owned and operated by AirSWIFT.

Supporting paragraphs: El Nido Airport AirSWIFT
Answer: Island Transvoyager