The official investigation Scrutiny , after most of the wreck was raised Cause_change_of_position_on_a_scale along with analysis of pieces of debris , concluded that the crew of Kursk was preparing GetReady to load Placing a dummy 65–76 `` Kit '' torpedo when a faulty weld in its casing leaked Motion high-test peroxide ( HTP ) , causing Causation the torpedo 's kerosene fuel to explode Bodily_harm .

The AAIC noted Know also Surat Thani 's minimal lighting Lighting and faulty warnings Warning to the aircraft .

Bad maps and faulty guides caused Causation Confederate Maj. Gen. John Magruder to be late for the battle Hostile_encounter , an excess of caution delayed Change_event_time Maj. Gen. Benjamin Huger , and Maj. Gen. Stonewall Jackson had problems collecting the Confederate artillery .

Investigation Criminal_investigation of the crash revealed Reveal_secret that the faulty auto-throttle reduced Cause_change_of_position_on_a_scale the left engine to idle during climb .

However , he believed Know that the elderly apparatus was faulty and used Using a release key .

The official investigation completed Process_end in December 2011 blamed Judgment_communication faulty signal systems which failed to warn the second train of the stationary first train on the same track , as well as a series of management failures on the part of railway officials in carrying out Action due procedure .

The crash was caused Causation primarily by the aircraft 's automated reaction , which was triggered Causation by a faulty radio altimeter .

japan 's aircraft accident investigation Scrutiny commission officially concluded Process_end that the rapid decompression was caused Causation by a faulty repair by boeing technicians after a unk incident during a landing Self_motion at osaka airport seven years earlier in 1978 .

Cabin pressurization continued to expand Expansion and contract the improperly repaired bulkhead until the day of the accident , when the faulty repair finally failed Earnings_and_losses , causing Causation the rapid decompression that ripped Removing off a large portion of the tail and caused Causation the loss Earnings_and_losses of hydraulic controls Control to the entire plane .