I don't know why anyone would need these, but we have had a few people request this item. So here it is. If you are looking for it, well you have finally found it. We also have one for the 407.
If you are just window shopping, this item is for drilling a hole in tail rotor gearbox. From the Bell TB: "During aircraft operations, it has been determined that oil accumulates in the 206-040-410 bearing gallery of the tail rotor (T/R) gearbox. Accumulated oil may enter the T/R output shaft, then leak from the area of the T/R crosshead.
This bulletin provides a procedure to drill an oil return hole, preventing leakage at the T/R crosshead"
TB 206L-96-190
- ATA Chapter:
- 65-Tail Rotor Drive