Small Aircraft; Low Wing; 1 Eng; Fixed Gear
Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Commercial
Flight Crew Last 90 Days 30; Flight Crew Total 2500; Flight Crew Type 1400
Confusion; Training / Qualification
Deviation - Altitude Excursion From Assigned Altitude; Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Clearance; Inflight Event / Encounter CFTT / CFIT
Flight Crew Became Reoriented; Flight Crew Executed Go Around / Missed Approach; Flight Crew FLC complied w / Automation / Advisory
Human Factors; Weather
On final approach to APF RNAV (GPS) 5: I accidentally stepped down to 295 FT; which was the LPV DA. The MDA or DA for LNAV/VNAV WAS 446 FT. I could not see the ground; and at the same time APF reported a low altitude alert. I reported 300 FT. Simultaneously I realized I had busted minimums and declared a go-around. This was executed normally. I don't recall visibility.
A single engine aircraft pilot in an advanced avionics flight deck descended below the APF RNAV GPS 5 LPV DA and executed a go-around after ATC issued a low altitude alert.