Premium on Safety - Issue 43 2022 - 5

QUIZ
Accelerate Stop or Go?
It's all in the math
BY AMY LABODA, MANAGING EDITOR,
USAIG PREMIUM ON SAFETY
Multiengine airplanes come in two flavors, those that have only an " accelerate-stop " table for runway takeoff
limits, and those with an additional " accelerate-go " table in their ops-specs. Which do you fly, and how often do
you check your balanced field limits in your ops-specs?
1 Which aircraft can typically continue a takeoff and
climb to clear a 50 ft agl obstacle after a critical
engine fails on takeoff?
A) Airplanes with more than two engines.
B) Airplanes that are powered by turbine or turboprop
engines.
C) Airplanes with auto-feathering propellers.
D) Aircraft certified with an Accelerate-Go set of limitations
as well as Accelerate-Stop limitations.
3 What exactly is V1
?
A) The fastest speed at which the pilot must immediately
take first action to reject a takeoff so that the aircraft will
stop within the calculated Accelerate-Stop distance. It is
also the slowest speed at which, during a failure of the
critical engine on takeoff, the pilot can continue to V2
ft agl, as calculated in the Accelerate-Go parameters for
the aircraft.
B) The slowest speed for rejecting a takeoff.
C) The speed you have to accelerate to before rotating for
climb on takeoff.
2
_________ is the speed at which you, after an engine
failure, can continue to accelerate, rotate, and reach a
height of _________ above the takeoff surface, within
the computed Accelerate-Go distance at V2
A) V1; 50 ft
B) V2; 35 ft
C) V1; 35 ft
D) Vr; 200 ft
.
4 When an engine fails, a multiengine aircraft taking off
will roll and yaw toward_________.
A) The engine that is still running.
B) Into the prevailing wind.
C) The dead (non-functioning) engine.
at 35
Answers on page 7
5

Premium on Safety - Issue 43 2022

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