Tech Tuesday: The Altimeter That Never Lies Your barometric altimeter can be fooled — by pressure changes, temperature, or even a wrong QNH. But the Radio Altimeter (RadAlt)? It doesn’t care about any of that. It literally fires radio waves at the ground and measures how long they take to bounce back. Pure physics. Instant truth. And in the last 2,500 feet of flight, that truth becomes critical: * The iconic “50… 40… 30…” callouts * Auto-land + flare guidance * GPWS terrain warnings * Exact decision height * Arming/disarming of spoilers and other landing logic A tiny antenna under the belly… running the final 2,500 ft of your flight with absolute precision. #AviationTraining #🤔 Unknown Facts