LAUSR

Abstract Jet engine malfunctions and pitot probe blocking are two safety events for which the formation of High Altitude Ice Crystals (HAIC) is a relevant contributing factor. Power loss and damage in jet engine under such conditions has drawn considerable attention of air transport authorities and industry. In turn, little interest has been paid to pitot probe clogging by HAIC, despite it being the main cause of two fatal accidents occurred in recent years. Aiming to increase flight safety, indications of erroneous Total Air Temperature (TAT) measurements due to built-up HAIC could be used to improve crew situation awareness. To that end, we propose data-based, practical and cost-effective mitigation measures to reduce the associated risk.