You can find the S109G parts number and name from the instruction manual

The following parts can be used for Syma S109G helicopter or Syma S109 helicopter

Syma RC Helicopter are available

S006/S006G        S009/S009G         S012/S012G        S013/S013G            S018/S018G               S022/S022G         S023/S023G        S026/S026G        S027/S027G         S029/S029G        S030/S030G            S031/S031G               S032/S032G        S033/S033G           S036/S036G        S038/S038G         S100/S100G        S102/S102G           S102G I-phone version/S102S                S105/S105G         S106/S106G        S107/S107G/S107C           S107N           S107P        S108/S108G         S109/S109G        S109G I-phone version          S110/S110G        S111/S111G   S111G I-phone version      S113/S113G        S116/S116G        S119/S119G        S301/S301G        S800/S800G         S31               S32            S33             S34           F1         F3          X1       X3        X5       X5A       X5C     X6

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