Medium Transport; Low Wing; 2 Turbojet Eng
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Human-Machine Interface; Situational Awareness
Aircraft Equipment Problem Less Severe; Inflight Event / Encounter CFTT / CFIT
Flight Crew FLC Overrode Automation; Flight Crew Returned To Clearance
Aircraft; Human Factors
On a visual approach to runway 34 at ROA we responded to a GPWS Terrain message. I was the PF (Pilot Flying) and had planned on joining the ILS at VINTON (FAF) to back up the visual approach. Approximately 4-5 miles abeam of the FAF with approach mode armed and autopilot engaged I got a LOC 1 capture and the aircraft started to make a left turn then it started going back right. As I was about to disconnect the automation we received the Terrain; Terrain; Pull Up message. I immediately increased thrust and started pitching up. The ground was clearly visible during the entire approach. Once clear; I assessed the situation and continued the approach by joining the localizer and glideslope near the FAF.Threats could have been the terrain. I thought I had a reasonable plan to manage that from previous experience at this airport; planning on backing up the approach with the ILS course and managing the descent for the final turn. Undesired aircraft state occurred when I got a LOC capture at a point I would not have expected. At no time did it appear that my descent planning was inappropriate. ATC had cleared us for the visual approach from 5200 ft and I was descending with the goal of turning final at the published altitude of 3800. ILS was tuned and I was monitoring the glide slope indications but not trying to fly the glide slope on the base leg.
Air carrier Captain reported a ground proximity Terrain warning while on visual approach.