856A4003G01 is a rugged aerospace temperature and pressure combo sensor, built to AS9100D aerospace quality standards and RTCA DO-160G environmental test protocols, designed for monitoring Boeing 777 and Airbus A330 engine nacelle systems during MRO and in-flight operations.

Fabricated from Inconel 718 alloy with a ceramic insulation layer and IP67 protection, it offers a temperature measurement range of -55°C to 200°C (±1°C accuracy) and a pressure range of 0–150 psi (±0.5 psi precision), with a 4–20 mA dual-output signal for simultaneous data transmission. Weighing 0.45 kg and measuring 95mm×50mm×35mm, it has a 15,000-hour MTBF and complies with FAA Part 25 and EASA CS-25 regulations. This sensor provides critical data for nacelle thermal and pressure management, ensuring engine compartment safety and operational efficiency for commercial fleets.