You may get all texts from a window by running through all children.
all_texts = []
for child in window.Children():
all_texts.extend(child.Texts())
all_texts = filter(lambda t:t, all_texts) # clear empty texts
By the way, it seems the window should be called 'Flight plan...' :-)
PS. I am happy to help a virtual controller!
UKHH - MDN91