Commercial Fixed Wing
Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP)
Distraction; Troubleshooting
Ground Event / Encounter Other / Unknown; No Specific Anomaly Occurred Unwanted Situation
Flight Crew Landed in Emergency Condition; Flight Crew Overcame Equipment Problem
Human Factors; ATC Equipment / Nav Facility / Buildings
SGU is notorious for near mid-air collisions and RA events.  I was monitoring the CTAF while we were between ETIYR and PIETZ prior to being cleared for the GPS (Runway) 19.  While monitoring I heard an aircraft state that they were having difficulty getting the runway lights to turn on via the CTAF.  I heard multiple series of clicks on the frequency.  After a minute the other plane said he saw the lights and all was normal.  That plane made position reports and was doing a circle to land to a MAP (Missed Approach) for the HIVKA SID.  Everything was uneventful until an aircraft at Mesquite Municipal began trying to cycle the lights at Mesquite.  Hey; what do you know SGU and Mesquite share the same frequency along with Kanab or maybe 2 more fields.  So; inside the FAF our Runway 19 lights cycle through all 3 settings of low; medium; high and turn off 3 times before we land.  We landed with the lights on low with no incident. Too many airports on the same CTAF.  Get a new CTAF for SGU that is it's own
Pilot reported issues with the CTAF pilot controlled runway lights at SGU.  Reporter stated the CTAF frequency is utilized by several airports nearby which allegedly is causing the runway light problems.