leans

باللغة العربية: وهم الميلان

1. A dangerous sensory illusion where the pilot of an aircraft believes themselves to be in a bank when they are actually wings-level, or vice-versa, often resulting in spatial disorientation and loss of control of the aircraft. · If you don't use your flight instruments when flying in cloud, you can easily get the leans and enter a fatal graveyard spiral.