Evaluation of algorithmic, textual and pictorial forms of representation of standard operating procedures for error reduction in complex systems

A new concept has been developed to compare different ways of presenting instructions for action for evaluation procedures. The representation forms algorithm (A), image (I) and text (T) are examined with regard to the number of top events, error frequencies, execution times and subjectively perceived workload. For this purpose, a study was carried out with n = 93 test persons in the research flight, in which the test persons had the task of landing a passenger aircraft using the autopilot with different representation forms. Possible work errors 14 with 11 different steps in the representation. Results of positive work-task landing plane: algorithm 58 % (1.7/14 errors σ = 1.5), text 62 % (1.5/14 errors σ = 1.1), image 93 % (0.8/14 errors σ = 1.1).