A319
Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 203
Situational Awareness; Distraction; Confusion; Time Pressure; Workload
Aircraft Equipment Problem Critical; Deviation - Altitude Excursion From Assigned Altitude; Deviation - Speed All Types; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter Unstabilized Approach
Flight Crew FLC Overrode Automation; Flight Crew Overcame Equipment Problem; Flight Crew Regained Aircraft Control; Flight Crew Took Evasive Action
ATC Equipment / Nav Facility / Buildings; Aircraft
While on short final for ILS Runway X at 1;500 feet; the aircraft pitched down from approx 800 feet/min to 2;900 feet/min. Autopilot was disconnected and returned to normal descent rate after 1 sec. It appeared to me that the ILS glideslope signal was disturbed and aircraft pitched down to follow the glideslope. Hand flew the rest of approach with no issues.
A319 Captain reported during final approach and on ILS the autopilot pitched over chasing the glideslope. The Captain stated the glideslope was erratic.