Multi-Engine

Accelerate-Stop & Accelerate-Go

An engine quits near rotation. Can you stop in the runway remaining — or accelerate and climb to 50 ft on the one that's left? Slide the failure speed: stopping gets harder as you go faster, going gets easier. Where they cross is your decision speed.

Distance from brake release

Engine fails atVrSpeed when the engine quits — faster is harder to stop, easier to goRunway available4000 ftWeight3700 lbHeavier → longer roll, higher Vr, worse single-engine climbDensity altitude0 ftHigher → less thrust; the go distance grows fastest

Accel-stop

Accel-go

Decision speed

Accelerate-Stop & Accelerate-Go

Takeoff decision