Commercial Fixed Wing
Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 132; Flight Crew Total 567; Flight Crew Type 567
Situational Awareness
Deviation - Altitude Overshoot; Deviation / Discrepancy - Procedural Clearance; Inflight Event / Encounter CFTT / CFIT
Air Traffic Control Issued Advisory / Alert; Flight Crew Became Reoriented; Flight Crew Returned To Clearance
Human Factors
Was being vectored for stadium visual approach at 4000 ft. Was given slow to 190 kts (from 240 kts) and cross TEB at 3000 ft. cleared for Stadium Visual approach. Went to LVL change with speed brakes out to get slowed/configured; got distracted trying to get flaps 10 deployed as the airspeed kept gusting up to 210 kts. We set touchdown zone elevation in around TEB and I was getting the aircraft further configured for landing. I forgot to reselect VNAV and we descended to around 1300 ft. and got a low altitude warning from Tower. I was visually flying the aircraft already and proceeded to click off the auto throttles and climb back to 1500 ft. by SLIMR and landed.
Air carrier Captain reported receiving a low altitude alert from TEB Tower on a visual approach.  Lack of awareness of FMS mode was cited as contributing.