Prediction of difficult airway management remains a pivotal challenge in anaesthesia. Difficult tracheal intubation and difficult mask ventilation may cause serious patient complications [1-6]. By allocating experienced personnel and relevant equipment, better prediction of difficult airway management may reduce complications and thereby associated morbidity and mortality. There is no single predictor that is sufficiently valid in predicting difficult tracheal intubation[7-12]. However, several studies show that by combining multiple predictors of difficult tracheal intubation, the positive and the negative predictive value of the assessment increases[12]. In Denmark as well as internationally, there is no clear recommendation on how to perform airway assessment. Consequently, airway assessment in Denmark is based exclusively on the individual anaesthesiologist's preoperative clinical assessment. It is poorly documented how accurately this preoperative clinical assessment predicts actual airway management conditions.