Airman Certification Standards
ACS AI.V.F
Before Takeoff Check
Knowledge
Purpose of before takeoff checklist items, including:
a. Reasons for checking each item
b. Detecting malfunctions
c. Ensuring the aircraft is in safe operating condition as recommended by the manufacturer
Risk Management
Division of attention while conducting before takeoff checks.
Unexpected runway changes by air traffic control (ATC).
Wake turbulence.
Potential powerplant failure during takeoff or other malfunction considering operational factors such as airplane characteristics, runway/takeoff path length, surface conditions, environmental conditions, and obstructions.
Skill
Review takeoff performance.
Complete the appropriate checklist(s).
Position the airplane appropriately considering wind direction and the presence of any aircraft, vessels, or buildings as applicable.
Divide attention inside and outside the flight deck.
Verify that engine parameters and airplane configuration are suitable. 32
Retrieved from ecfr.gov on July 17, 2026.