On 26 October 2023, a De Havilland DHC8-100 flight crew mismanaged an approach to Val-d’Or and narrowly avoided controlled flight into terrain (CFIT). The experienced captain made an incorrect entry into the flight management system (FMS) and followed this with ineffective attempts to correct the error. At the same time, the inexperienced first officer acting as pilot flying (PF) continued an excessively steep off-track descent without visual reference until the approach was discontinued when terrain proximity alerts were activated. The aircraft operator subsequently made significant changes to its flight crew training and operating procedures.