Regional Jet 200 ER/LR (CRJ200)
Flight Crew Air Transport Pilot (ATP)
ATC Issue All Types
General None Reported / Taken
ATC Equipment / Nav Facility / Buildings
The glide slope ILS for Runway 5 was not and continues to be unstable; with the biggest deviations occurring around KECKS. The glide slope moves from one dot low to 1.5 dots high in approximately 3 seconds; then back to one dot low in two seconds. The amplitude and frequency does decrease the closer to the runway; however the glide slope is not steady enough to invoke confidence had the weather been low. This has happened multiple times with multiple aircraft. There were no known vehicles or aircraft operating on the parallel runways at the time as verified by a call to the Tower.
An air carrier Captain reported that the CLT Runway 5 ILS glide slope has significant fluctuations especially near KECKS.