Build & Maintain > Tail SystemBuild & Maintain > MechanicsPowerplants > TurbineVario Bell Models > 212 1:7
Tail angle gearbox overhaul
What is the overhaul frequency of your tail angle gearbox with metal bevel gear?
1
Never - Find not needed, access not easy, etc.
2
When needed - Signs like more mesh, vibration, noise, etc.
3
Yearly - Check, clean and re-lubricate
4
Rare - I know lasts a long time
