Piper Arrow pilot reported while on an instrument approach they experienced a landing gear issue and spatial disorientation resulting in an uncommanded turn and descent. ATC advised of deviation; the pilot regained control of the aircraft and landed safely.

Report 1 | Narrative: In between initial approach fix and final approach fix pilot flying configured for landing. Landing gear was lowered but three green lights were not shown. While pilot was trying to troubleshoot the lights over the course of about 20 seconds the aircraft entered a left bank and deviated from the localizer XX at ZZZ course. Pilot noticed the turn and decent and rolled wings level to catch the decent. Tower controll caught the deviation and notified pilot flying. Pilot regained localizer course and intercepted glideslope to conduct rest of approach and landing.

Likely cause was spatial disorientation and a distraction in the cockpit that led to the unplanned left turn.

Report 1 | Synopsis: Piper Arrow pilot reported while on an instrument approach they experienced a landing gear issue and spatial disorientation resulting in an uncommanded turn and descent. ATC advised of deviation; the pilot regained control of the aircraft and landed safely.