I've been trying to get aerodactyl for a few years, I've tried tickets, caught charm, ancient ball + pokemon ancient, I've lost count of how many double caught events happened in these +- 5 years of trying, I've actually tried all the things to which the game provides for you to increase the odds and nothing.
20:29 Used 10 pokeballs, 51 great balls, 5 super balls, 514 ultra balls, 5942 rocket balls, 1016 sport balls, 228 heavy balls, 35 aerial balls, 810 ancient balls on Aerodactyl (Normal Form).
20:29 Your rocket ball was broken.
20:29 Used 10 pokeballs, 51 great balls, 5 super balls, 514 ultra balls, 5942 rocket balls, 1016 sport balls, 228 heavy balls, 35 aerial balls, 810 ancient balls on Aerodactyl (Normal Form).
20:29 Your rocket ball was broken.