Line-Oriented Flight Training (LOFT) is carried out in a flight simulator as part of initial or recurrent flight crew training. It involves a flight from Point A to Point B conducted in real time and representative of line operations. However, it includes special emphasis on abnormal situations which involve communications, management, and leadership. The abnormalities which will be encountered are not pre-briefed.
The concept of LOFT was first expounded in ICAO Circular 217 AN/132 'Human Factors Digest No 2' in 1989 which has since been republished in its original form as UK CAA Publication CAP 720 (Crew Resource Management and LOFT)
CAP 720 states in the introduction to Chapter 5 that: