In the recent years, aircraft engine manufacturers have set ambitious goals concerning the maximization of efficiency and the reduction of noise and fuel consumption. The design of the next-generation propulsion units plays a key role in addressing this challenge. The development of innovative and green engine architectures introduces challenging operating conditions for the low-pressure turbine such as transonic Mach and low-Reynolds numbers. In the frame of the EU-funded project SPLEEN commissioned by Safran Aircraft Engines, aimed at investigating the combined effect of secondary and leakage flows under modern engine-scaled flow conditions, the development of an advanced technique of surface pressure measurement applied in the linear cascade of the S-1/C wind tunnel at the von Karman Institute is of major importance for understanding the aerodynamic performance.