United Express Flight 2415, operated by a Beechcraft 1900, was on its descent to the Tri-Cities Airport in Pasco, Washington, when it crashed on December 26, 1989. The flight departed from Portland, Oregon, and was scheduled for a routine landing in Pasco. As the aircraft approached, it faced deteriorating weather conditions, with fog severely limiting visibility. The crew, composed of two pilots and four passengers, received no warning of the impending tragedy as they navigated to the runway. Tragically, the flight lost contact with air traffic control shortly before the crash. Upon impact, the aircraft was engulfed in flames, and rescue operations were initiated immediately, though all six occupants perished on the scene. The investigation that followed uncovered several key findings regarding the aircraft's approach. It was determined that the pilots may have misjudged the descent rate, contributing to the accident. The National Transportation Safety Board (NTSB) scrutinized the standard operating procedures for pilots flying in adverse weather, leading to adjustments in training and operational protocols for commuter airlines to enhance safety measures against similar incidents. The crash underscored the importance of improved communication between pilots and air traffic control in challenging weather situations.