If you have stuff you will never need again what should you do?
Throw it away or try to sell it and raise some cash to support the business?
I'm not quite sure of the ownership of the RB-211/524G engines (BA or Rolls or a mix thereof), but at the peak, they probably had about 300 of them in service including spares. I tell you what, just throw them away!
Sorry, I don't want your type of financial management looking after my company......just saying!