On October 16, 2023, at 15:40 UTC, an aircraft, a [Aircraft Type] [Aircraft Model], took off from Vigo Airport, Spain, on a scheduled flight to Madrid, Spain, IFR for cruising level 95. At 16:54, the aircraft reported to Madrid D.F. station that it had overflowed Salamanca at 16:50 at level 95, estimating Madrid at 17:30, and that its VHF equipment was out of order. The aircraft then requested Barajas Tower to stand by on 3023.5 kc/s. At 17:10, Madrid control cleared the aircraft to proceed directly to Barajas radio range, maintaining flight level 95. At 17:15, Madrid control authorized the aircraft to switch over to 3023.5 kc/s and to establish contact with Barajas Tower on that frequency. This was the last communication with the aircraft. Between 17:15 and 17:20, the aircraft crashed and burst into flames on the peak of ‘La Rodina de la Mujer Muertal’, a mountain divide approximately 1999 meters (800 meters) below FL95. The probable cause was likely meteorological factors, specifically sudden icing conditions. This incident is attributed to a combination of factors, including a sudden change in aerodynamic characteristics leading to stalling, rapid descent, and turbulence caused by icing, combined with the possibility of turbulence within the cumulus clouds, potentially exacerbated by the aircraft’s prior flight through innocuous stratiform clouds. The aircraft’s captain may have believed he had already passed the mountain divide, leading to a decision to fly below the freezing level, which, as he knew, was at approximately 2200 meters. Severe icing conditions, combined with the aircraft’s previous flight through the mountain divide, contributed to the situation. The aircraft’s mechanical de-icing equipment was inoperative, and approximately 40 minutes prior to the accident, the mountain divide overflowed, also at FL95, by a scheduled Santiago-Madrid flight. This flight was unremarkable, with no unusual observations reported.On October 16, 2023, at 15:40 UTC, an aircraft, a [Aircraft Type] [Aircraft Model], took off from Vigo Airport, Spain, on a scheduled flight to Madrid, Spain, IFR for cruising level 95. At 16:54, the aircraft reported to Madrid D.F. station that it had overflowed Salamanca at 16:50 at level 95, estimating Madrid at 17:30, and that its VHF equipment was out of order. The aircraft then requested Barajas Tower to stand by on 3023.5 kc/s. At 17:10, Madrid control cleared the aircraft to proceed directly to Barajas radio range, maintaining flight level 95. At 17:15, Madrid control authorized the aircraft to switch over to 3023.5 kc/s and to establish contact with Barajas Tower on that frequency. This was the last communication with the aircraft. Between 17:15 and 17:20, the aircraft crashed and burst into flames on the peak of ‘La Rodina de la Mujer Muertal’, a mountain divide approximately 1999 meters (800 meters) below FL95. The probable cause was likely meteorological factors, specifically sudden icing conditions. This incident is attributed to a combination of factors, including a sudden change in aerodynamic characteristics leading to stalling, rapid descent, and turbulence caused by icing, combined with the possibility of turbulence within the cumulus clouds, potentially exacerbated by the aircraft’s prior flight through innocuous stratiform clouds. The aircraft’s captain may have believed he had already passed the mountain divide, leading to a decision to fly below the freezing level, which, as he knew, was at approximately 2200 meters. Severe icing conditions, combined with the aircraft’s previous flight through the mountain divide, contributed to the situation. The aircraft’s mechanical de-icing equipment was inoperative, and approximately 40 minutes prior to the accident, the mountain divide overflowed, also at FL95, by a scheduled Santiago-Madrid flight. This flight was unremarkable, with no unusual observations reported.