Narrative:

Air carrier X departed runway 36R. According to SID; he should have made a turn to a heading of 025 degrees. I was working the runway 36L local control position; and I had no aircraft off my runway; but had I; this aircraft quite possibly could have caused a collision because he did not make the turn. This is a rather occurrence (aircraft not turning in accordance with SID) and it seems nothing ever comes of it. I believe that an unsafe situation is caused by the possibility that pilots won't make these turns that separate them from traffic departing the parallel runway.

Related reports:

Google
 

Original NASA ASRS Text

Title: CLT CTLR VOICED CONCERN REGARDING DEP THAT FAILED TO TURN VIA THE SID; ALLEGING ROUTINE OCCURRENCES OF SAME.

Narrative: ACR X DEPARTED RWY 36R. ACCORDING TO SID; HE SHOULD HAVE MADE A TURN TO A HDG OF 025 DEGS. I WAS WORKING THE RWY 36L LCL CTL POS; AND I HAD NO ACFT OFF MY RWY; BUT HAD I; THIS ACFT QUITE POSSIBLY COULD HAVE CAUSED A COLLISION BECAUSE HE DID NOT MAKE THE TURN. THIS IS A RATHER OCCURRENCE (ACFT NOT TURNING IN ACCORDANCE WITH SID) AND IT SEEMS NOTHING EVER COMES OF IT. I BELIEVE THAT AN UNSAFE SITUATION IS CAUSED BY THE POSSIBILITY THAT PLTS WON'T MAKE THESE TURNS THAT SEPARATE THEM FROM TFC DEPARTING THE PARALLEL RWY.

Data retrieved from NASA's ASRS site as of January 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.