SFP OPTION:
• A reduced idle thrust transition delay
between approach- and ground-idle speeds, which improves stopping distances and in- creases field-length-limited landing weight.
• Increased flight-spoiler deflection from 30 degrees to 60 degrees, which aids brake performance when landing.
• A two-position tailskid at the rear of the aircraft. The tailskid protects longer- bodied 737-800s and -900ERs against inad- vertent tailstrikes during landing, which al- lows higher aircraft approach attitudes and lower landing speeds.
It wouldn't have mattered if they had parachutes!, they die was cast once they decided to land.. or rather didn't elect for a missed approach like the preceding 2 aircraft.