He boarded the Piper Malibu light aircraft, which then vanished from radar as it flew near the Channel Islands on January 21.
Once the body of Sala had been found, Ibbotson's family set up a GoFundMe page, asking the public to help bring the pilot home.
The striker had disappeared on January 21 when flying from Nantes to Cardiff, just days after leaving the French club to join the Welsh side in a club-record deal.
An image released by the AAIB shows the wreckage of the doomed flight that was carrying footballer Emiliano Sala.
Nantes coach Vahid Halilhodzic, who excelled when he himself was the club's striker, said he felt a special attachment to Sala, who he described as a "lovely lad".
SAC has repeatedly refused to publicly name the owner of the plane, but clarified on Monday night that the Air Accidents Investigations Branch has been informed.
Mbappe, whose full name is Kylian Sanmi Mbappe Lottin, donated under the name Elie Lottin.
Mrs Ibbotson said they have not been in contact with the family of Sala as they are both grieving, but said "we've always thought about them" and she sent her "deepest condolences".
The family of plane pilot Ibbotson have also launched a fund to continue the search for his body, after it was abandoned due to adverse weather conditions.