Commercial Fixed Wing
Air Traffic Control Fully Certified
Situational Awareness
Deviation / Discrepancy - Procedural Clearance; Ground Incursion Runway
Air Traffic Control Issued New Clearance; Flight Crew Executed Go Around / Missed Approach
Airport; Human Factors
A PA23 arrived on Runway 4L and was instructed to turn right at Taxiway E; hold short of Runway 4R for arriving traffic. Pilot acknowledged. While working other traffic; I turned to scan my traffic and observed the PA23 to have crossed the first hold bar and was holding at the improper hold bar. Simultaneously; my Local Assist was pointing at the aircraft to get my attention. An air carrier was on approximately a 0.75 mile final and was immediately sent around to avoid conflict; then re-sequenced by Approach. Simplify this re-occurring problem by using one hold bar; rather than two.
HCF Controller described a go around event in which traffic instructed to hold short of Runway 4R failed to hold at the correct hold bar; the reporter recommends using only one hold bar reduce confusion.