LoansI doubt that share holder approval is required for a loan -...

Loans
I doubt that share holder approval is required for a loan - this is just part of company business as managed by the directors.

However, any major liability taken on would need to be approved by the secured noteholders who in the end have the say on what long term liabilities the company can commit to.

I can't see any reason why it would not be approved by the note holders(in fact there is every reason for it - for everybody).