Definition
The certified vertical profile a multi-engine transport-category airplane is required to be able to fly after losing one engine at the most critical point during takeoff. It is the planned climb path used to demonstrate that the airplane can clear obstacles and reach a safe altitude with one engine inoperative, assuming the remaining engine(s) operate at takeoff thrust and the airplane is configured and flown according to the published procedure.
Plain English
It is the climb path the airplane is guaranteed to be able to follow if an engine quits during takeoff. Performance charts and procedures are built around this path so the airplane will still clear obstacles and reach a safe height on the engine(s) that are still working.
Context Anchor
Used in takeoff planning and rotation/liftoff discussions, especially for multiengine airplanes when considering what happens if an engine fails just after leaving the runway.
Derivation
"Scheduled" here means "published in the performance schedule" — the certified data tables in the airplane flight manual. It does not mean timetabled. The phrase literally describes the flightpath listed in the engine-out section of those performance schedules.
Why Pilots Care
Following the correct engine-out path keeps the airplane climbing safely and clears obstacles when performance is reduced.
Grounding Statement
Picture the airplane lifting off, one engine failing, and the pilot following the planned climb path instead of improvising close to the ground.
Intuition Check
Scheduled does not mean the flight is on a clock or airline timetable here. It means the path and actions are planned in advance for the engine-failure case.
Example Sentence 1
Before takeoff, the crew confirmed the airplane's weight allowed it to meet the engine-out scheduled flightpath for the obstacles off the departure end.
Example Sentence 2
The takeoff briefing included the engine-out scheduled flightpath to ensure obstacle clearance with one engine inoperative.