Airbus has introduced new operating limitations on the Pratt & Whitney PW1100G-JM GTF engines used on the A320neo family due to a potential risk encountered in cold weather conditions. Under the updated procedures, A320neo, A321neo, and A321LR aircraft are prohibited from taking off in freezing fog conditions where the temperature is below 0°C and visibility is under 150 meters. The measure is described as a temporary safety precaution against severe engine icing and potential power loss.
The issue first became evident on November 15 in Almaty, where harsh winter conditions often prevail. Air Astana confirmed delays on some flights and stated that Airbus has officially imposed restrictions on affected models, noting: “Heavy freezing fog at sub-zero temperatures can lead to significant engine icing and power degradation.”
According to Airbus, this restriction applies only to aircraft powered by Pratt & Whitney PW1100G engines. The CFM LEAP-1A option on the A320neo family remains unaffected. Airbus said it is working closely with operators, while Pratt & Whitney continues to develop a permanent fix. The manufacturer emphasized that the limitation is temporary and necessary for safety until a full solution is implemented.
Airbus and Pratt & Whitney do not expect widespread operational disruption. However, airlines operating in regions with harsh winter conditions may experience increased challenges.
