Replacement Pitch Arm for SHUTTLE RG GPH 346 HI0403209 by Hirobo  [HI0403209]

Pitch arm overview for SHUTTLE RG GPH 346

This RC-scale pitch arm is identified by Hirobo part number HI0403209 and is intended to be used with the SHUTTLE RG GPH 346 pitch assembly. It is supplied as a service replacement to maintain correct pitch link operation during repairs or upgrades.

Functionally, the arm transfers servo commands into collective and cyclic blade changes. Inspect fitment points and ball link engagement before flight, ensure control horns move smoothly without binding, and retorque any reused fasteners in line with your airframe supplier's guidance.

Replacing a fatigued arm can restore consistent stick-to-blade feel. Verify the replacement's geometry against the old arm to prevent unintended changes to servo travel or blade incidence, and use a suitable threadlocker on metal fastenings where the maintenance guide advises.