The owners of the plane that crashed at Shoreham Air Show, killing 11 men, have settled two compensation claims so far, lawyers for the victims' families said.
Stewarts Law, which is representing some of those affected by last August's crash in West Sussex, said the rest of the cases it is handling are in "advanced negotiations".
James Healy-Pratt, head of aviation at Stewarts Law, said: "Whilst no money will ever bring any of the loved ones back, we did obtain an admission of legal responsibility from the owner of the jet and their aviation insurers in late 2015.
"That paved the way for successful negotiations for compensation, without the added trauma of a High Court trial on civil liability.
"We have successfully negotiated compensation packages for one third of our group of families that we represent, and are in advanced negotiations for the remainder of our family clients."
Aircraft owner Canfield Hunter told the BBC that its admission of liability was a statutory requirement, and it was committed to helping those caught up in the tragedy.
The development comes days before the first anniversary of the crash. Flowers will be laid and a minute's silence held on the wooden Shoreham Tollbridge on Monday at 1.22pm - the time of the disaster.
Flags will be flown at half-mast at civic buildings in West Sussex, and on Saturday there will be a community service at St Mary de Haura Church in Shoreham.
It emerged last month that the plane's pilot, Andrew Hill, 52, is being investigated by detectives over possible manslaughter by gross negligence.
The crash happened when the 1950s Hawker Hunter plane failed to pull out of a loop-the-loop manoeuvre during the Shoreham Air Show and crashed on to the busy A27.
Mr Hill has been questioned voluntarily under caution by police.
Another pre-inquest hearing is due to be held next month.
A special bulletin published by the Air Accidents Investigation Branch (AAIB) in March said the air show organisers did not know the intended routine of Mr Hill's plane.
Safety regulations at UK air shows were tightened after the disaster. This year's Shoreham Air Show was cancelled out of respect for victims and their families.
The men who died were: wedding chauffeur Maurice Abrahams, 76, from Brighton; retired engineer James Graham Mallinson, 72, from Newick, near Lewes; window cleaner and general builder Mark Trussler, 54, from Worthing; cycling friends Dylan Archer, 42, from Brighton, and Richard Smith, 26, from Hove; NHS manager Tony Brightwell, 53, from Hove; grandfather Mark Reeves, 53, from Seaford; Worthing United footballers Matthew Grimstone and Jacob Schilt, both 23; personal trainer Matt Jones, 24; and Daniele Polito, 23, from Worthing.