We present HST/STIS and FUSE spectra of the quasar RX J 1230.8 + 0115 ( V = 14.4 ,z = 0.117 ) .
In addition to Galactic , Virgo , and intervening absorption , this quasar is host to a remarkable intrinsic absorption complex .
Four narrow absorption line systems , strong in C iv , N v , and O vi , lie within 5000 km s ^ { -1 } of the QSO redshift .
Three of the systems appear to be line-locked , two in N v , and two in O vi , with the common system residing in between the other two ( in velocity ) .
All three systems show signs of an intrinsic origin – smooth wind-like profiles , high ionization , and partial coverage of the central engine .
The fourth system , which appears at the systemic redshift of the QSO , may originate from host galaxy or intervening gas .
Photoionization analyses imply column densities in the range 19.1 < \log N ( H ) < 21 and ionization parameters in the range -1.3 < \log U < 0.3 .
Revisiting the issue of line-locking , we discuss a possible model in the context of the accretion-disk/wind scenario and point out several issues that remain for future simulations and observations .