It left Nantes at 7.15pm and had been flying at 5,000ft when it contacted Jersey air traffic control requesting descent.
Both pilot David Ibbotson and the Argentinian footballer are missing presumed dead.
After rescuers and Guernsey police called off the official search 10 days ago, Sala's sister Romina set up a GoFundMe page that has raised more than £300,000, leading to a privately-funded search being opened.
Cushions from the plane were found on a beach near Surtainville, France, on Monday.
The family of the missing footballer then hired a private search team of their own, with funds donated by a number of fellow professionals, such as Kylian Mbappe, in order to continue the search.
"It's a small plane but we can now cover the area twice as fast with two vessels".
"I said to the lads we've got to perform and I just thought the whole club was wonderful".
In the interview area after the game the veteran boss was preparing to take questions from the BBC, and was heard telling the man with the microphone: "Match of the Day?"
Sala had just completed a £15m transfer to Cardiff City from French club Nantes.
He said:"I was alright until the final whistle went and I went on the pitch". I thought the whole club was fantastic. The fans were just incredible.
"And I thought we deserved it".
"The last 10 days or whatever it is, I can't begin to explain to you how hard it has been".
"I've never seen anything like it, and I will remember it for the rest of my life".
Cardiff's players, who sported daffodils embroidered on their shirts in Sala's honour, celebrated Reid's first goal by racing to the home dugout and holding up a blue shirt bearing Sala's photograph.