Accelerate-stop distance
Performance
01 · Direct Answer
Accelerate-stop distance is the distance required to accelerate with all engines, experience the assumed critical event, reject the takeoff and stop within the certified calculation assumptions.
02 · Operational Explanation
The calculation combines an acceleration segment, recognition or transition assumptions and the stopping segment. Aircraft data define how engine failure, braking, reverse thrust credit and runway condition are treated.
03 · Why It Matters
It is a principal runway-limiting case. If actual conditions fall outside the calculation inputs, the apparent stopping margin may not exist.
04 · Key Considerations
05 · Visual Insight
Simplified concept view · Not for operational calculation
Sea level
1.0× takeoff roll
5,000 ft DA
1.3× takeoff roll
8,000 ft DA
1.6× takeoff roll
Certification Specifications for Large Aeroplanes
CS-25.109 — Accelerate-stop Distance · Demo reference
Takeoff Performance Manual
Rejected Takeoff Calculation · Demo reference
Future operator answers will add locked, private references from company manuals, SOPs, fleet documents, training manuals, compliance records and safety reports.
07 · Confidence Level
Generally supported; specific confirmation is required. The definition is well supported; usable distance depends on aircraft and operator performance data.
08 · Limitations / Safety Note
This static demonstration supports learning and pre-flight study only. Confirm operational decisions against current regulations, approved aircraft data, charts, NOTAMs and applicable operator procedures.