We present the results of multi-epoch VLBI observations of water masers in the AGFL 5142 massive star forming region .
We measure an annual parallax of \pi = 0.467 \pm 0.010 mas , corresponding to a source distance of D = 2.14 ^ { +0.051 } _ { -0.049 } kpc .
Proper motion and line of sight velocities reveal the 3D kinematics of masers in this region , most of which associate with millimeter sources from the literature .
In particular we find remarkable bipolar bowshocks expanding from the most massive member , AFGL 5142 MM1 , which are used to investigate the physical properties of its protostellar jet .
We attempt to link the known outflows in this region to possible progenitors by considering a precessing jet scenario and we discuss the episodic nature of ejections in AFGL 5142 .