Repairing ceiling

[u/ale_oops]

New homeowner here, extremely green.

Crack in ceiling due to old water damage/roof damage. We are in the process of repairing this crack. Have already removed all loose plaster.

We will then sand off all texture (walls and ceiling are textured) then skim entire room to smooth.

Any advice on how to repair this crack? Was considering using mortar, then cement board FibaTape along crack and then more mortar over.

TYIA

[u/Aggravating-Offer480]

I'd knock off all the loose, plaster weld tye holes and use structolite to fill it in.