DIAGNOSIS Food debris and grease have carbonized in the gap between the basket and the drawer frame, acting as an adhesive.
FIX Do not force it. Soak the entire basket-and-drawer assembly in warm, soapy water for 30-60 minutes. Then, use a soft-bristle brush (like a dish brush) to scrub the seam where the basket meets the drawer. Apply gentle twisting force while pulling up.
IF THAT DIDN'T WORK Heat can re-liquefy the grease. Place the stuck assembly back into the air fryer. Run it at 400°F for 3 minutes. Carefully remove (use oven mitts) and immediately attempt to separate the basket. The heated grease will be less viscous.
HEADS UP To prevent recurrence, always remove and hand-wash the basket separately from the drawer after each use. Never put the basket through a dishwasher cycle if it is seated in the drawer.