What _____ (happen) if my parachute does not open?

This is a type 1 conditional sentence because based on the clause containing “if” (if my parachute does not open?)

Structure: If + S + V simple present, S + will + V infinitive

We apply the formula for affirmative sentences in the simple future: S + will + V infinitive

=> What will happen if my parachute does not open?

What if my parachute doesn’t open?