KLM Cityhopper Flight 433 was a Saab 340B, registered as PH-KSH, which crashed during an emergency landing on 4 April 1994 and killing 3 occupants, including the captain. Flight 433 was a routine scheduled flight from Amsterdam, the Netherlands, to Cardiff, Wales. The accident was caused by inadequate pilot training and a faulty sensor, leading to loss of control during go-around.

The Saab 340 is a Swedish twin-engine turboprop aircraft designed and initially produced by Saab AB and Fairchild Aircraft. It is designed to seat 30-36 passengers and, as of July 2018, there were 240 operational aircraft used by 34 different operators.