headheading

head,heading? She and her child got on a plane that headed to where her parents live.
请详细分析一下headed.
并且,为什么不用heading?   

参考案 分析句中head：
不及物动词，意思“向某个方向出发”。

举例：
head to school 去学校方向走
where are you headed? 你去哪里？

您的句子 She and her child got on a plane that headed to where her parents live.中的that headed可以改成heading.

原因：
前者是一个定语从句来修饰plane.
后者是现在分词做定语来修饰plane.
意思是一样的。

举例：
I am planning to pay a visit to my uncle living in beijing.
相当于：
I am planning to pay a visit to my uncle who lives in beijing.