Pitch links jam nuts
There are no jam nuts on the tail rotor pitch links, but there are similar nuts called Pal nuts
There is a bolt going through each end the pitch link
On the opposing end, there is a standard nut
On the outside of the nut is the Pal nut, which prevents the inner nut from loosening
Ensure the Pal nuts are tight/secure
Ensure the torque stripes are in a continuous line and not broken