Dirk Roosenburg designed the KLM logo at its establishment in 1919; he intertwined the letter K, L, and M, and gave them wings and a crown. The crown was depicted to denote KLM's royal status, which was granted at KLM's establishment. The logo became known as the "vinklogo" in reference to the common chaffinch. The KLM logo was largely redesigned in 1961 by F.H.K. Henrion. The crown, formed by a line, four blue circles and a cross, was retained. In 1991, the logo was further revised by Chris Ludlow of Henrion, Ludlow & Schmidt. In addition to its main logo, KLM displays its alliance status in its branding, including "Worldwide Reliability" with Northwest Airlines (19932002) and the SkyTeam alliance (2004present).
KLM's in-flight entertainment system is available in all classes on all widebody aircraft; it provides all passengers with Audio/Video on Demand (AVOD). The system includes interactive entertainment including movies, television programs, music, games, and language courses. About 80 movies including recent releases, classics and world cinema are available in several languages. The selection is changed every month. The in-flight entertainment system can be used to send SMS text messages and emails to the ground. Panasonic's 3000i system is installed on all Boeing 747-400, Boeing 777-200ER, and on most of the Airbus A330-200 aircraft. All Airbus A330-300 and Boeing 777-300ER aircraft, and some Airbus A330-200 aircraft are fitted with the Panasonic eX2 in-flight entertainment system.
KLM provides a selection of international newspapers to its passengers on long-haul flights; on short-haul flights they are only offered to Europe Business Class passengers. A selection of international magazines is available for World Business Class passengers on long-haul flights. All passengers are provided with KLM's in-flight magazine, the Holland Herald. On board flights to China, South Korea and Japan, the airline offers in-flight magazines EuroSky (China and Japan), in either Chinese or Japanese, and Wings of Europe (South Korea) in Korean. On 29 May 2013, KLM and Air France launched a pilot scheme to test in-flight Wi-Fi internet access. Each airline equipped one Boeing 777-300ER in its fleet with Wi-Fi, which passengers can use with their Wi-Fi-enabled devices. Wireless service was available after the aircraft reached 20,000 feet (6,100 m) in altitude.
On 2 February 1950, KLM Douglas C-47A PH-TEU crashed in the North Sea 40 mi (64 km) off the Dutch coast due to an apparent in-flight fire, killing all seven on board. The aircraft was operating an Amsterdam-London passenger service.
On 22 March 1952, Flight 592, a Douglas DC-6 (PH-TBJ "Koningin Juliana") crashed at Frankfurt, killing 45 of the 47 occupants.
On 23 August 1954, Flight 608, a Douglas DC-6B (PH-DFO, "Willem Bontekoe") crashed between Shannon, Ireland, and Schiphol in the North Sea, 40 kilometres (25 mi) from IJmuiden for reasons unknown. All 21 passengers and crew died.
On 5 September 1954, Flight 633, a Lockheed Super Constellation, ditched in the River Shannon after takeoff from Shannon Airport. Twenty eight of the 56 people on board (46 passengers and 10 crew) were killed.
On 14 July 1957, Flight 844, a Lockheed Super Constellation, crashed in the sea near Biak, after takeoff from Mokmer Airport at Biak on its way to Manila. The pilot made a low farewell pass over the island, but the aircraft lost altitude, crashed into the sea and exploded. Nine crew and 49 passengers died; there were 10 survivors.
On 14 August 1958, Flight 607-E, a Lockheed Super Constellation flying from Amsterdam to New York via Shannon, crashed into the ocean 180 kilometres (110 mi) off the coast of County Galway, Ireland, killing all 99 on board.
On 12 June 1961, Flight 823, a Lockheed L-188 Electra, crashed on approach to Cairo International Airport due to pilot error, killing 20 of 36 on board.
On 25 October 1968, KLM Aerocarto Douglas C-47A PH-DAA flew into Tafelberg Mountain, Suriname, following an engine failure while on a survey flight. The aircraft collided with the mountain in cloudy conditions, killing three of the five people on board.