Air Traffic Control Fully Certified
Human-Machine Interface; Confusion
Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance
General None Reported / Taken
ATC Equipment / Nav Facility / Buildings; Procedure
A B717 was cleared for take off RNAV HRSHL and he read back RNAV HRSHL and flew RNAV to RONII. He thought he was a COKEM5 Departure but he was really a RAMBLN6 Departure. The flight plan showed he was a RAMBLIN which is why I cleared him to HRSHL. He ended up less than 3 miles behind the previous departure. Visibility was 1/2 mile and ceiling was 400 OVC so I couldn't observe his turn visually; not that you can because the RACD and ASDE-X for Local Control 1 is hanging in the window blocking your view. I saw him turn towards HRSHL before I switched him to Departure but missed his turn to RONII because my RACD is slaved to Local Control 1 RACD and since that is an arrival local; the RACD is set up to see arrivals and I only can see about 5 miles of my departure airspace. Not really safe but we do the best we can. Individual RACD's for each position!
ATL Controller described a potential conflict involving an RNAV departure routing; noting that equipment limitations prevented him/her from observing the initial wrong turn and suggesting additional and/or re-location of RADAR displays in the Tower.