March 23

Do you mean March 23 1944? Anne talks about an airplane crash:

Yesterday a plane crashed nearby. The crew was able to parachute out in time. It crashed on top of a school, but luckily there were no children inside. There was a small fire and a couple of people were killed. As the airmen made their descent, the Germans sprayed them with bullets. The Amsterdammers who saw it seethed with rage at such a dastardly deed. We-by which I mean the ladies-were also scared out of our wits. Brrr, I hate the sound of gunfire.