Loss of Control in Flight (LOC-I), which is currently the number-one cause of aviation fatalities, can be mitigated through integrated upset prevention and recovery training. The means by which this training is conducted needs to be systematically defined to include both practical and academic training. To determine the training requirements as well as acceptable technical solutions, the Royal Aeronautical Society formed the International Committee for Aviation Training in Extended Envelopes (ICATEE). This working group is defining the operational training objectives, the training needs (shortcomings), and the training means (or media) that are acceptable for addressing the threat of LOC-I upsets. The improvements to flight simulators recommended by ICATEE include better incorporation of the surprise factor, enhancing mathematical model fidelity in simulation, improving the realism of upset onsets, and improving motion cueing. The role of the instructor in providing properly executed training is also key to ensuring a high training standard. The paper examines the training requirements and technical solutions considered by ICATEE.