The outside air temp (OAT) displayed on the PFD (EXP5000) on most aircraft cannot be changed from Celsius to Fahrenheit. ![][1] [1]: https://hf-files-oregon.s3-us-west-2.amazonaws.com/hdpavidynesupport_kb_attachments/2019/09-10/6e27e57f-eeab-4815-ac88-db0e7f60aa2f/image.png ...