Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Provided Assistance; Flight Crew Returned To Clearance; Flight Crew Took Evasive Action
ATC Equipment / Nav Facility / Buildings
Started getting vectors for ILS approch in IMC condition and cleared to 3;000 feet. We received a short vectors to intercept and cleared for the approach. PF (Pilot Flying) armed the Approach mode in green needles; captured localizer; but never received glideslope and started to descend in vertical mode. As we approached 1;000 AGL; PF executed a go-around. On a second approach; we received a glideslope right before final approach fix. We continued to safe and uneventful landing.
IMC conditions; ATC vectored us to the ILS to a shorter-than-normal final approach; creating additional pressure. Once established on localizer; PF (Pilot Flying) armed the approach; then used vertical speed descent to capture GS (Glideslope). GS never observed on either PFD (Primary Flight Display). As we approached 1;000 AGL we executed a go-around. On the second approach; the GS appeared exactly as we crossed the final approach fix on both PFD; we landed and advised tower. We notified [Maintenance] and Tower of possible ground or aircraft equipment failure.Cause: Possible ILS GS equipment failure/interference caused no GS signal.
CRJ-200 flight crew reported irregular ILS Glideslope indications during ILS approach.