I was about 5 years old; my grandfather was piloting our airplane and used the aircraft radio to broadcast my mother yelling for him to be careful
The dream about your grandfather piloting an airplane with you on board and your mother broadcasting on the aircraft radio could represent your feelings of being vulnerable and helpless in a situation. The fact that you were five years old suggests that this relates to events and experiences from your childhood. The airplane may symbolize your life journey, and your grandfather may represent a figure of authority in your life, such as a parent or grandparent, who is responsible for guiding you on your path.
Your mother's broadcast could represent your own fears, doubts, or insecurities, which prevent you from feeling secure and confident in your journey. You may feel that others, like your grandmother, are more capable of navigating the challenges of life than you are. Alternatively, the dream may suggest that you need to be careful and attentive to the warnings and advice of others, as they may have valuable guidance to offer you.