The FAA has published an Information for Operators (InFO 17014) updating its list of cold-temperature-restricted airports. Six airports have been added and 14 removed. Airports on the list are known to have cold weather altimetry errors, and a correction factor is required. The document also provides information on a new charting symbol for the restricted airports. The updated list is published in the Aug. 17, 2017 notams.
Current centigrade/Fahrenheit icons on the approach plates for the listed airports will be changed incrementally to centigrade only (-XX°C). The icon indicates a cold temperature altitude correction will be required on an approach when the reported temperature is “at or below” what is specified for that airport. During this process, pilots may see temperatures on the current approach plates that are different from the temperature listed in notams. The notam temperature is the updated one.
Pilots are responsible for applying altitude corrections and must advise ATC when these corrections are being made on a segment of the approach other than the final segment. Controllers are not responsible for making any altitude corrections or advising pilots that an altitude correction is required.
