Designed to replace early-generation Boeing 747-200/300 airliners, the A340-600 is capable of carrying 379 passengers in a three-class cabin layout for 13,900 km (7,500 nmi; 8,600 mi). It provides similar passenger capacity to a 747 but with 25 percent more cargo volume and with lower trip and seat costs. The first flight of the A340-600 was made on 23 April 2001. Virgin Atlantic began commercial services in August 2002. The variant's main competitor is the 777-300ER. The A340-600 was replaced by the A350-1000.

The A340-600 is 12 m (39 ft 4.4 in) longer than a -300, more than 4 m (13 ft 1.5 in) longer than the Boeing 747-400 and 2.3 m (7 ft 6.6 in) longer than the A380, and has two emergency exit doors added over the wings. It held the record for the world's longest commercial aircraft until the first flight of the Boeing 747-8 in February 2010. The A340-600 is powered by four 250 kN (56,000 lbf) thrust Rolls-Royce Trent 556 turbofans and uses the Honeywell 331-600[A] APU.
(Source: Wikipedia)