It’s not new advice, but since the 11/28/04 accident at Montrose, CO, the NTSB wants all pilots to be reminded to LOOK and TOUCH airplane surfaces for ice and frost prior to flying, and have issued an Alert Letter for this purpose.
The letter states the Safety Board believes the only way to ensure the wing is free of critical contamination is to touch it.
It’s still very much winter. Let’s all be safe out there.
Jan Hoynacki, Executive Director
United States Pilots Association