Agenda Objective: 1 / 3 group check A on 30 aircraft minimum in 60 days max

[fabrizio69_officiel]

Guys,

I would appreciate your help regarding the agenda objective stated in the title. I completed 3 group A checks on all of my aircraft (160 LH aircraft) in less than 60 in game days for several times now and I still cannot complete this objective. Any advice at this point would be helpful as all the other objectives are already completed or nearing completion.

Thanks!