TOLD Flashcards
Runway Available
If Runway available is not known then
runway length+underun (if used)-lineup distance
Lineup distance
Static - 200’
Static-rolling - 300’
Rolling - 700’
Critical Field Length (CFL)
Total runway length required to accelerate on all engines to Critical Engine Failure Speed (Vcef) lose an engine then continue to either takeoff or come to a full stop
(for safe takeoff CFL
Critical Takeoff
Critical Field Length (CFL) plus 2,000’ exceeds runway available
Three engine CRN < 4
S1>Vcb
Obstacle clearance < 1% of obstacle distance from end of runway
Ground Minimum Control Speed (Vmcg)
Minimum airspeed on the ground which an outboard engine can be lost and directional control maintained with the remaining engines at takeoff N1
Inflight Minimum control Speed (Vmca)
minimum speed which an outboard engine can be lost and straight line directional control maintained with full rudder, not more than 5 degrees bank, remaining engines at takeoff thrust
(Vmca should never be > takeoff speed
Critical Engine Failure Speed (Vcef)
max speed accelerated to, lose an engine, then either continue the takeoff or stop in the same amount of distance
Noncritical Engine Failure Speed (Vnef)
Max speed obtained under normal acceleration then stop on runway available minus 2000’
(directly compared to Vmcg, Vcb, Vrot to determine S1)
Refusal speed
max speed obtained under normal acceleration then stop on available runway
compared with S1 determine feasibility of planned takeoff condition
Max brake energy decision speed (Vmb)
speed airplane can be brought to complete stop without exceeding max energy absorption capability of brakes (50 million foot-pounds per brake)
Cautionary Brake Energy Decision Speed (Vcb)
80% Vmb (approximately 36 million foot-pounds
this is where the DANGER zone begins
Rotation speed
rotation from three point attitude to takeoff attitude is initiated
(3 seconds prior to takeoff speed)
Takeoff Flare
begins at unstick and ends when reaching climbout speed (approximately 35 feet)
