In The Calculus Affair, the frequently kidnapped Professor Calculus is being forced into a Blue Beechcraft Bonanza Model 35 by Syldavian kidnappers.
At the base of the model, Milou aka Snowy, brings a hapless innocent bystander's umbrella to Tintin and Captain Haddock as they board the Swiss Air bus to give chase to Calculus.
The model construction is metal and plastic. Hand painted and pad printed. 1:72 scale. Plane is 106mm (4.2") long and 139mm (5.5") wide. Production year 2014. Comes safely packed in a clear plastic round box.