Shares in Aero Inventory were suspended on Monday after the wholesaler of aircraft parts said it had discovered “issues” with the valuation of certain stock and warned it was likely to breach non-financial covenants on its bank debt.

In a notice to the stock exchange, the company said the problems could have a “material impact” on its 2008 and 2009 accounts, adding that it was negotiating with its lenders over its inability to provide audited accounts within the timescales they required.