Following an uneventful flight from Beijing, China, the aircraft was established on an ILS approach to Runway 27L at London Heathrow. = Initially the approach progressed normally, with the Autopilot and Autothrottle engaged, until the aircraft was at a height of approximately 600 ft and = 2 miles from touch down. The aircraft then descended rapidly and struck = the ground, some 1,000 ft short of the paved runway surface, just inside the airfield boundary fence. The aircraft stopped on the very beginning of = the paved surface of Runway 27L. During the short ground roll the right main landing gear separated from the wing and the left main landing gear was pushed up through the wing root. A significant amount of fuel leaked = from the aircraft but there was no fire. An emergency evacuation via the = slides was supervised by the cabin crew and all occupants left the aircraft, = some receiving minor injuries. Initial indications from the interviews and Flight Recorder analyses = show the flight and approach to have progressed normally until the aircraft = was established on final for Runway 27L. At approximately 600 ft and 2 miles from touch down, the Autothrottle demanded an increase in thrust from = the two engines but the engines did not respond. Following further demands = for increased thrust from the Autothrottle, and subsequently the flight crew moving the throttle levers, the engines similarly failed to respond. The aircraft speed reduced and the aircraft descended onto the grass short = of the paved runway surface. The investigation is now focused on more detailed analysis of the Flight Recorder information, collecting further recorded information from = various system modules and examining the range of aircraft systems that could influence engine operation. =20 If she's carried plenty of uncontaminated fuel, next they'll be looking = at the =E4utomatic engine anti ice / ice detect system' It's normal to = leave it in AUTO, I'm a dinosaur and prefer to turn it ON [over-rideON] before entering icing conditions. The old RB211 & this RB211 Trent share the 3 spool compressor and especially sensitive intermediate compressor stage. = =20 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> If you wish to unsubscribe from the AIRLINE List, please send an E-mail to: "listserv@xxxxxxxxxxxxxxxxx". Within the body of the text, only write the following:"SIGNOFF AIRLINE".