She wrote on her website: "I'm sure I am not alone in having found Patrick one of the most appealing and entertaining characters in the wine business.
"A total ornament to the British wine trade, he was a member of the Sandeman family of port and sherry fame, managing to be devastatingly handsome but not intimidatingly so. Charming but not oleaginous. Well informed but engaging.
"Great company, in a word - and extremely talented in his ability to hand-pick great wines from, particularly, Italy. He occupied a unique place in the world of wine. Our very deepest condolences to his equally delightful wife Katy and their children."
Emergency services went to the airfield shortly after 3.30pm on Saturday, the ambulance service said, but Mr Sandeman was pronounced dead at the scene, a spokeswoman said.
Sibson airfield has been home to a parachute centre since 1971 and was one of the first civilian drop zones in the country, according to its website.