What happened
The incident occurred while the aircraft was navigating through a valley under conditions of limited visibility caused by cloud cover. During this phase of flight, the twin-engine airplane struck the terrain on the south slope of Mount Moel Eilio. The crash site was located approximately 10 kilometers southeast of Caernarfon, in close proximity to the village of Betws Garmon.
The impact resulted in fatal injuries for everyone on board. All five crew members were killed in the accident. The personnel consisted of a pilot, two observers, and two wireless operators who also served as air gunners. No survivors were reported from this event.
Findings
Official investigations concluded that the primary factor leading to the disaster was controlled flight into terrain. This determination indicates that the aircraft remained under the control of the crew until it impacted the ground, likely due to the challenging environmental conditions and restricted visual references during the approach to the mountainous area.