Performance and Limitations

What is accelerate-stop distance?

The runway length required to accelerate to a specified speed (either Vr or Vlof, as specified by the manufacturer), experience an engine failure, and bring the airplane to a complete stop.

What is Accelerate-go distance?

The horizontal distance required to continue the takeoff and climb to 50’ AGL, assuming an engine failure occurs at Vr or Vlof, as specified by the manufacturer.

What is All-Engine Service Ceiling?

The highest altitude at which the airplane can maintain a steady rate of climb of 100 fpm with both engines operating at full power.

What is All-Engine Absolute Ceiling?

The altitude where climb is no longer possible with both engine operating at full power.

What is Single-Engine Service Ceiling?

The highest altitude at which the airplane can maintain a steady rate of climb of 50 fpm with one engine operating at full power and one engine’s propeller feathered.

What is Single-Engine Absolute Ceiling?

The altitude where climb is no longer possible with one engine at full power and one engine’s propeller feathered.

What is a consideration when operating above the single-engine absolute ceiling?

If an engine failure occurs, the airplane with drift down to its single-engine absolute ceiling. Vyse yields the minimum rate of descent.

What regulation discussed the one engine inoperative climb performance requirements?

14 CFR Part 23.67.

Are multi-engine aircraft required to climb on one engine?

Must be measured at 5,000 ft MSL.

For aircraft with a maximum weight of 6,000 lbs. or less, and a Vso of 61 knots or less:

There is no requirement for a one-engine inoperative positive rate of climb at 5,000 ft, or any other altitude. The rate of climb could be a negative number - meaning a descent.

For aircraft with a maximum weight of 6,000 lbs. or less, and/or Vso more than 61 knots:

If certified before February 4, 1991; the one engine inoperative rate of climb in feet per minute at 5,000’ MSL must be equal to at least 0.027 Vso².

If certified after February 4, 1991; maintain a steady climb gradient of at least 1.5 percent (1.5ft / 100ft) at a pressure altitude of 5,000 ft.