AA.III.I.S1
Rejected Takeoff
What does AA.III.I.S1 mean?
Reject the takeoff if the powerplant failure occurs prior to becoming airborne (ASEL, ASES)..
- Area of Operation
- III. Takeoffs and Landings
- Task
- I. Rejected Takeoff
- Element type
- A Skill element — something you must physically demonstrate to your examiner on the practical test (checkride), not the written.
What you need to know
The core of this task is decision-making before you ever start the roll: you must know your planned V1/decision speed, the runway distance available, and how surface conditions and wind affect both accelerate-stop and accelerate-go performance, so that if something goes wrong you already know whether stopping is realistic. Once a failure or malfunction occurs, the decision to reject must be prompt and decisive if it happens before reaching decision speed (or before liftoff in single-engine airplanes) — hesitation eats up runway you may not have. Executing the reject well means closing the throttle(s) immediately, using rudder/brakes/aerodynamic and mechanical drag devices as appropriate to maintain centerline tracking and stop safely, while resisting the urge to fixate on the malfunction itself. Finally, good rejected-takeoff performance includes managing distractions and workload so you don't lose situational awareness, and following through with the proper checklist, crew coordination, and radio calls once stopped — check current standards/AFM guidance for the specific speeds and procedures that apply to your airplane.
Why students miss this
Students often treat the reject/continue decision as purely a speed check against V1 rather than a dynamic judgment that also depends on what's failed, how much runway remains, and how confident the crew is that the airplane will fly safely. The trap is assuming a rejected takeoff is always the 'safe' choice, when past a certain point in the takeoff roll a high-speed abort onto limited remaining runway can be far riskier than continuing and dealing with the problem in the air.
Focus on: Study the logic behind the go/no-go decision as a balance of risk between stopping and continuing, not just a single speed or distance number to memorize.
Drill this area until it sticks
AA.III.I.S1 came from a question you missed on the FAA Airline Transport Pilot Multiengine Airplane knowledge test. Drill ACS-aligned practice questions with AI explanations and the cited FAA handbook reference behind every answer — free to start.
Missing it isn't a verdict on you — it's a sign your prep skipped the why behind it. Memorizing answer letters is exactly what leaves gaps like this. Here, every answer explains the reasoning and cites the FAA source it comes from, so the concept holds on test day and at the checkride oral.
Study this concept
Plain-English explanations of the key ideas behind AA.III.I.S1, grounded in the FAA handbooks.
Related ACS codes in I. Rejected Takeoff
Other elements the FAA tests under this same Task — review them together.
- AA.III.I.R1Selection of the takeoff path based on aircraft limitations, available distance, surface condit…
- AA.III.I.R2A powerplant failure or other malfunction during takeoff.
- AA.III.I.R3Directional control following a rejected takeoff.
- AA.III.I.R4A rejected takeoff with inadequate stopping distance.
- AA.III.I.R5High-speed rejected takeoff.
- AA.III.I.R6Distractions, task prioritization, loss of situational awareness, or disorientation.
- AA.III.I.S2Reject the takeoff if the powerplant failure occurs at a point during the takeoff where the rej…
- AA.III.I.S3Promptly reduce the power and maintain positive aircraft control using drag and braking devices…
+ 1 more element in this Task.
Common question
Why would a pilot ever continue a takeoff after an engine failure instead of rejecting?
Once the airplane has accelerated far enough down the runway, there may not be enough distance left to stop safely, so continuing the takeoff and handling the failure in flight—where the airplane has more options and margin—can be the safer choice.
What is an FAA ACS code?
The FAA's Airman Certification Standards (ACS) break each certificate into Areas of Operation, Tasks, and specific Knowledge (K), Risk Management (R), and Skill (S) elements. Every knowledge-test question maps to one code like AA.III.I.S1. When you miss a question, your Airman Knowledge Test Report lists its code so you know exactly what to review.
Have a whole list of codes from your report? Paste them all into our free ACS code lookup to see every weak area at once — or browse the aviation glossary for plain-English definitions.