Since airline reservation requests are often made by city-pair (such as "show me flights from Chicago to Düsseldorf"), an airline that can codeshare with another airline for a variety of routes might be able to be listed as indeed offering a Chicago–Düsseldorf flight. The passenger is advised however, that airline no. 1 operates the flight from say Chicago to Amsterdam, and airline no. 2 operates the continuing flight (on a different airplane, sometimes from another terminal) to Düsseldorf. Thus the primary rationale for code sharing is to expand one's service offerings in city-pair terms to increase sales.
Hawaiian Airlines (HA) is the premiere airline for travel to the Hawaiian Islands. Its origins date back to 1929 when it was founded as Inter-Island Airways Ltd with service between Honolulu, Maui, and the Big Island of Hawaii. Today Hawaiian's route structure provides Hawaiian style service between the Hawaiian islands plus service to North America, Asia, and the South Pacific. Daniel K. Inouye International Airport (HNL) in Honolulu serves as the airline's headquarters and main hub. It also has a large hub at Kahului Airport (OGG) on Maui. Hawaiian Airlines mainline fleet consists of Airbus A321neo's, A330-200's, Boeing 717-200's, and 767-300's. The Airbus A330-200 aircraft have recently been updated with lie flat beds in their Premium Cabins. The lie flat bed seats have been designed with aspects from Hawaii's environment such as curves, earth tone colors, and natural wood. The Boeing aircraft feature two class service. ATR 42-500 aircraft are used on some inter-island flights with Hawaiian Airlines' connector airline 'Ohana. Hawaiian Airlines has an extended network with codeshare flights on several airlines such as Air China (CA), China Airlines (CI), JAL (JL), JetBlue (B6), and Korean Air (KE).
On July 31, 1946, a chartered Philippine Airlines (PAL) DC-4 ferried 40 American servicemen to Oakland, California, from Nielson Airport in Makati City with stops in Guam, Wake Island, Johnston Atoll and Honolulu, Hawaii, making PAL the first Asian airline to cross the Pacific Ocean. A regular service between Manila and San Francisco was started in December. It was during this year that the airline was designated as the flag carrier of Philippines.

Erosion of beaches can expose less resilient soils and rocks to wind and wave action leading to undermining of coastal headlands eventually resulting in catastrophic collapse of large quantities of overburden into the shallows. This material may be distributed along the beach front leading to a change in the habitat as sea grasses and corals in the shallows may be buried or deprived of light and nutrients.


World War II, like World War I, brought new life to the airline industry. Many airlines in the Allied countries were flush from lease contracts to the military, and foresaw a future explosive demand for civil air transport, for both passengers and cargo. They were eager to invest in the newly emerging flagships of air travel such as the Boeing Stratocruiser, Lockheed Constellation, and Douglas DC-6. Most of these new aircraft were based on American bombers such as the B-29, which had spearheaded research into new technologies such as pressurization. Most offered increased efficiency from both added speed and greater payload.[32][33]
In the 1950s, the De Havilland Comet, Boeing 707, Douglas DC-8, and Sud Aviation Caravelle became the first flagships of the Jet Age in the West, while the Eastern bloc had Tupolev Tu-104 and Tupolev Tu-124 in the fleets of state-owned carriers such as Czechoslovak ČSA, Soviet Aeroflot and East-German Interflug. The Vickers Viscount and Lockheed L-188 Electra inaugurated turboprop transport.
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