455 Bravo Uniform
Final Approach
One of my students was on a cross country when his radio failed just before departure from a towered airport. I gave him the tower phone number, but when he called for take off clearance, it was denied. The tower operator said the cell phone was not legal for maintaining two-way radio communication inside the Class D.
We had to use another airplane to get him home.
Is it possible the controller was wrong, or just unwilling or unable to accommodate?
Someone NORDO called a tower in a Class D (with a 20 mile TSRA) with a mobile phone. They were asked if they would accept light gun signals from ATC. They taxied and took off accordingly. CFI onboard.
So somebody was wrong or did something wrong, or it was allowed however discretionary.