A concrete ramp should follow the natural profile of the beach to prevent it from changing the normal flow of waves, longshore currents, water and wind. A ramp that is below the beach profile will tend to become buried and cease to provide a good surface for vehicular traffic. A ramp or stair that protrudes above the beach profile will tend to disrupt longshore currents creating deposits in front of the ramp, and scouring behind. Concrete ramps are the most expensive vehicular beach accesses to construct requiring use of a quick drying concrete or a coffer dam to protect them from tidal water during the concrete curing process. Concrete is favored where traffic flows are heavy and access is required by vehicles that are not adapted to soft sand (e.g. road registered passenger vehicles and boat trailers). Concrete stairs are commonly favored on beaches adjacent to population centers where beach users may arrive on the beach in street shoes, or where the foreshore roadway is substantially higher than the beach head and a ramp would be too steep for safe use by pedestrians. A composite stair ramp may incorporate a central or side stair with one or more ramps allowing pedestrians to lead buggies or small boat dollies onto the beach without the aid of a powered vehicle or winch. Concrete ramps and steps should be maintained to prevent buildup of moss or algae that may make their wet surfaces slippery and dangerous to pedestrians and vehicles.
Beach nourishment involves pumping sand onto beaches to improve their health. Beach nourishment is common for major beach cities around the world; however the beaches that have been nourished can still appear quite natural and often many visitors are unaware of the works undertaken to support the health of the beach. Such beaches are often not recognized by consumers as artificial. A famous example of beach nourishment came with the replenishment of Waikīkī Beach in Honolulu, Hawaii, where sand from Manhattan Beach, California was transported via ship and barge throughout most of the 20th century in order to combat Waikiki's erosion problems. The Surfrider Foundation has debated the merits of artificial reefs with members torn between their desire to support natural coastal environments and opportunities to enhance the quality of surfing waves. Similar debates surround beach nourishment and snow cannon in sensitive environments.
Airline financing is quite complex, since airlines are highly leveraged operations. Not only must they purchase (or lease) new airliner bodies and engines regularly, they must make major long-term fleet decisions with the goal of meeting the demands of their markets while producing a fleet that is relatively economical to operate and maintain; comparably Southwest Airlines and their reliance on a single airplane type (the Boeing 737 and derivatives), with the now defunct Eastern Air Lines which operated 17 different aircraft types, each with varying pilot, engine, maintenance, and support needs. 

Airline financing is quite complex, since airlines are highly leveraged operations. Not only must they purchase (or lease) new airliner bodies and engines regularly, they must make major long-term fleet decisions with the goal of meeting the demands of their markets while producing a fleet that is relatively economical to operate and maintain; comparably Southwest Airlines and their reliance on a single airplane type (the Boeing 737 and derivatives), with the now defunct Eastern Air Lines which operated 17 different aircraft types, each with varying pilot, engine, maintenance, and support needs.


On Airbus A321 aircraft, Hawaiian offers iPad mini tablet computers for rent,[98] in addition to movies shown on overhead projection screens. Prior to September 1, 2013, Hawaiian offered DigEplayer portable video players for rent. Airbus A330 aircraft are equipped with on-demand units built into every seatback. The new Airbus A321neo will be equipped with personal device entertainment via app.
Inter-Island Airways (Hawaiian: Hui Mokulele Piliʻāina), the forerunner of the airline which is now known as Hawaiian Airlines, was incorporated on January 30, 1929. Inter-Island Airways, a subsidiary of Inter-Island Steam Navigation Company, began operations on October 6, 1929, with a Bellanca CH-300 Pacemaker, providing short sightseeing flights over Oʻahu.[14][15] Scheduled service began a month later on November 11 using Sikorsky S-38s with a flight from Honolulu to Hilo, via intermediary stops on Molokaʻi and Maui.[16]
On Airbus A321 aircraft, Hawaiian offers iPad mini tablet computers for rent,[98] in addition to movies shown on overhead projection screens. Prior to September 1, 2013, Hawaiian offered DigEplayer portable video players for rent. Airbus A330 aircraft are equipped with on-demand units built into every seatback. The new Airbus A321neo will be equipped with personal device entertainment via app.
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