Can you start an approach below minimums?
Can you start an approach below minimums? Under Part 121 / 135. The pilots can only commence an approach (proceed past the final approach fix) if the latest weather received is above landing minimums. Mainly, pilots are concerned with visibility.
What is the difference between MDA and DA?
Decision Altitude In practical terms, that means approaches with a glide slope (ILS), and approaches with a glide path (LPV, LNAV/VNAV). DA's are different than MDAs. MDAs are absolute floors, but when flying to a DA, you make your continue-to-land or go missed decision at DA, while you remain on the glideslope.