The board of Menzies has agreed to recommend a £559m takeover by Kuwaiti rival group National Aviation Services (NAS).
The final proposal - at 608 pence per share - follows earlier approaches from NAS to the board regarding possible all cash offers for Menzies at 460 pence, 510 pence and 605 pence per Menzies share.
This potential deal nearly doubles recent market valuations for the Edinburgh-based aviation services firm.