Can 'in' replace 'on board'' in the sentence?

[Tan Elaine]

A 54-year-old woman is in a coma after fracturing her skull when she fell and hit her head on board an SMRT bus on Sunday night.

Would it be wrong if I use 'in' instead of 'on board'?

Thanks.

 

[SoothingDave]

Yes, it's wrong. You are "on board" a bus, or a plane, etc.

 

[Barb_D]

Or even just "on." But "in" would sound wrong.

 

[5jj]

'On board' a bus is not common in BrE, but it's not incorrect. Formally, we board a bus at the beginning of the journey, and alight from it at the end.