--Aug. 6, 2011: A CH-47 Chinook helicopter crashes in eastern Wardak province, killing 30 U.S. special operation troops and seven Afghan commandos.
--Sept. 21, 2010: U.S. Army Blackhawk crashes in southern Zabul province, killing nine troops on board, including four Navy SEALs.
--May 30, 2007: U.S. Chinook crashes while under fire in southern Helmand, killing one British, one Canadian and five American troops.
--Feb. 18, 2007: U.S. Chinook carrying 22 U.S. soldiers crashes in southern Zabul province, killing eight and injuring 14.
--Sept. 2, 2006: British Nimrod aircraft crashes near Kandahar in the south, killing 14 crew members.
--May 5, 2006: U.S. Chinook helicopter crashes while attempting a night landing on a small mountaintop in eastern Kunar province, killing 10 U.S. soldiers.
--Aug. 16, 2005: Spanish helicopter crashes near the western city of Herat, killing 17 Spanish soldiers.
--June 28, 2005: U.S. helicopter is shot down in eastern Kunar province during a rescue operation, killing 16 special operations troops.
--April 6, 2005: U.S. Chinook helicopter crashes in a sandstorm near eastern Ghazni, killing 15 American troops and three civilian contractors.
--Dec. 21, 2002: German army helicopter crashes in Kabul, killing seven German soldiers.
--March 4, 2002: U.S. Chinook helicopter is shot down in eastern Afghanistan, killing seven American troops.
