The Boeing 737 Next Generation, commonly abbreviated as 737NG, or 737 Next Gen, is a narrow-body aircraft powered by two jet engines and produced by Boeing Commercial Airplanes. Launched in 1993 as the third generation derivative of the Boeing 737, it has been produced since 1997 and is an upgrade of the 737 Classic (300/-400/-500) series.

It features a redesigned wing with a larger area, a wider wingspan, greater fuel capacity, and higher maximum takeoff weights (MTOW). It is equipped with CFM International CFM56-7 series engines and a glass cockpit and features upgraded and redesigned interior configurations. It has a longer range and larger variants than its predecessor: The series includes four models, the 600/-700/-800/-900, seating between 108 and 215 passengers. The 737NG’s primary competition is with the Airbus A320 family.

As of March 2021, a total of 7,121 737NG aircraft had been ordered, of which 7,073 had been delivered, with remaining orders for the -700W, -800, and -800A variants. The most common variant was the 737-800, with 4,991 commercial, 186 military, and 23 corporate jets ordered, of which 4,989, 145, and 21, respectively, had been delivered. Boeing stopped assembling commercial 737NGs in 2019 and made the final deliveries in January 2020. The 737NG is superseded by the fourth generation 737 MAX, introduced in 2017.

In 2015, Boeing launched the 737-800SF passenger to freighter conversion program with Aeronautical Engineers Inc (AEI). The conversion can be completed by AEI or third-parties such as HAECO. GECAS was the initial customer. It has a 23.9 tonnes (52,800 lbs) payload capacity, and a range of 2,000 nmi (3,750 km). It received its supplemental type certificate from the FAA in early 2019.

DHL International GmbH (DHL) is a German international courier, package delivery and express mail service, which is a division of the German logistics firm Deutsche Post. The company delivers over 1.5 billion parcels per year.

The company was founded in the United States in 1969 and expanded its service throughout the world by the late 1970s. In 1979, under the name of DHL Air Cargo, the company entered the Hawaiian islands with an inter-island cargo service using two DC-3 and four DC-6 aircraft. Dalsey and Hillblom personally oversaw the daily operations until its eventual bankruptcy closed the doors in 1983. At its peak, DHL Air Cargo employed just over 100 workers, management and pilots.

The company was primarily interested in offshore and intercontinental deliveries, but the success of FedEx prompted their own intra-US expansion starting in 1983.

In 1998, Deutsche Post began to acquire shares in DHL. It reached controlling interest in 2001, and acquired all outstanding shares by December 2002. The company then absorbed DHL into its Express division, while expanding the use of the DHL brand to other Deutsche Post divisions, business units, and subsidiaries. Today, DHL Express shares its DHL brand with business units such as DHL Global Forwarding and DHL Supply Chain. It gained a foothold in the United States when it acquired Airborne Express.