The Beechcraft Model 18 (or "Twin Beech", as it is also known) is a 6- to 11-seat, twin-engined, low-wing, tailwheel light aircraft manufactured by the Beech Aircraft Corporation of Wichita, Kansas. Continuously produced from 1937 to November 1969 (over 32 years, a world record at the time), over 9,000 were built, making it one of the world's most widely used light aircraft. Sold worldwide as a civilian executive, utility, cargo aircraft, and passenger airliner on tailwheels, nosewheels, skis, or floats, it was also used as a military aircraft.During and after World War II, over 4,500 Beech 18s were used in military serviceas light transport, light bomber (for China), aircrew trainer (for bombing, navigation, and gunnery), photo-reconnaissance, and "mother ship" for target dronesincluding United States Army Air Forces (USAAF) C-45 Expeditor, AT-7 Navigator, and AT-11 Kansan; and United States Navy (USN) UC-45J Navigator, SNB-1 Kansan, and others. In World War II, over 90% of USAAF bombardiers and navigators trained in these aircraft.In the early postwar era, the Beech 18 was the pre-eminent "business aircraft" and "feeder airliner". Besides carrying passengers, its civilian uses have included aerial spraying, sterile insect release, fish stocking, dry-ice cloud seeding, aerial firefighting, air-mail delivery, ambulance service, numerous movie productions, skydiving, freight, weapon- and drug-smuggling, engine testbed, skywriting, banner towing, and stunt aircraft. Many are now privately owned, around the world, with 240 in the U.S. still on the FAA Aircraft Registry in August 2017.

Philippine Airlines (PAL), a trade name of PAL Holdings, Inc. (PSE: PAL), also known historically (until 1970) as Philippine Air Lines, is the flag carrier of the Philippines. Headquartered at the PNB Financial Center in Pasay, the airline was founded in 1941 and is the first and oldest commercial airline in Asia operating under its original name.The primary hub of Philippine Airlines is Ninoy Aquino International Airport, Manila. It also operates three secondary hubs: Mactan–Cebu International Airport, Cebu; Francisco Bangoy International Airport, Davao; and Clark International Airport which covers portions of the cities of Angeles and Mabalacat within the Clark Freeport Zone in the province of Pampanga. Its subsidiary PAL Express operates only regional routes while PAL operates both domestic (Cebu, Davao, General Santos, Kalibo, Manila and Zamboanga) and international routes. The airline operates both narrowbody and widebody fleets of Airbus aircraft and a widebody fleet of Boeing aircraft.