Colombian authorities and investigators , with the aid Assistance of ATF members from the U.S. , inspected Scrutiny the scene and the remains of the car bomb Terrorism .

The aircraft had been fully inspected Scrutiny and was not carrying Bringing a full load Filling .

An independent inquiry chaired by Anthony Hidden , QC found Know that the signalling technician responsible had not been told Telling that his working practices were wrong , and his work Being_in_operation had not been inspected Scrutiny by an independent person .

Hidden Hiding_objects was critical of the health and safety culture within British Rail at the time , and his recommendations included Cause_to_be_included ensuring that work Employment was independently inspected Scrutiny and that a senior project manager be made Arriving responsible for all aspects of any major , safety-critical project such as re-signalling work .