I live within a kilometre of the airport and don't see that many helicopters passing over.
The old Derazona 206 I worked on in Senggo base, Irian Jaya in 1975 is still flying over my house. Probably the data plate is the only original part! It works for Air Bali.
The last few days have had what appears to be a SMAC or Intan 'coloured' Hughes 500.
For about a year an orange coloured 412 has flown several times a day over Tista/Abang (I go there often enough) I assume he's heading to Ahmed area. Too high to see the rego, so do not know who owns that.
As to big operators, nothing seen.