Definition
A takeoff that is discontinued during the ground roll using the applicable aircraft and operator procedure.
Why it matters
At high speed, decision delay and degraded stopping performance can consume the runway margin within seconds.
Questions that turn reading into a defensible review
A strong review separates the event description, possible precursors, recorded evidence, approved criteria, and the final safety decision.
What exactly is being examined?
A takeoff that is discontinued during the ground roll using the applicable aircraft and operator procedure.
Which conditions could build the exposure?
Engine failure, warning, configuration issue, or unsafe condition; Late diagnosis or ambiguous indications.
What evidence would strengthen the picture?
Decision speed context and reject initiation Thrust reduction, spoiler, reverse, braking, and deceleration sequence
What must remain authoritative?
Current approved aircraft data, operator procedures, investigation findings, and the source document’s own scope control any operational conclusion.
Timeline, aircraft state, relationships, and recurrence
Calibrated airspeed, Engine thrust, Ground spoiler position, Thrust reverser status, Brake pressure can contribute to a synchronized event picture when their mappings, units, sampling, and flight-phase logic are validated.
Cause, intent, compliance, and technical disposition
An FDM alert or pattern is not by itself a causal finding, judgement of individual performance, regulatory conclusion, or aircraft maintenance and airworthiness determination.
Reports, approved criteria, context, and authoritative evidence
Combine the recorded picture with applicable procedures, crew and operational reports, weather or airport information, technical evidence, and the linked official publications and investigation sources.
Stop decision timeline
As speed rises, diagnosis time decreases and brake energy increases.
Common causes and precursors
- →
Engine failure, warning, configuration issue, or unsafe condition
- →
Late diagnosis or ambiguous indications
- →
Runway contamination or brake-performance degradation
Operational risks
- R1
Runway overrun
- R2
Brake fire or tyre failure
- R3
Loss of directional control
Guidance themes
These are cross-source themes for orientation. Apply only the current, approved material for the aircraft and operation.
- Apply approved stop/go criteria and callouts
- Use correct performance inputs
- Do not improvise from generic internet thresholds
Safety actions to consider
Train high-speed recognition and role discipline
Validate takeoff event logic
Review brake-energy and runway-condition threats
Parameters that help explain the event
A useful event picture comes from signal relationships—not a single exceedance or a generic threshold.
Calibrated airspeed
Speed relative to the applicable target and configuration is central to energy management, approach stability, runway performance, and stall margin.
Open parameter guide ↗% / ratio / aircraft-specificEngine thrust
Thrust is a primary part of energy control and is essential for understanding approach corrections, takeoff, go-around, and engine malfunctions.
Open parameter guide ↗deg or discreteGround spoiler position
Timely deployment supports braking effectiveness; partial, asymmetric, late, or retracted states can change landing performance.
Open parameter guide ↗discrete or %Thrust reverser status
Reverser selection and deployment timing help explain deceleration performance, asymmetry, and crew response after touchdown.
Open parameter guide ↗psi, bar, or %Brake pressure
Brake application timing and symmetry help evaluate stopping action, system response, and directional control.
Open parameter guide ↗Recommended monitoring questions
Decision speed context and reject initiation
Thrust reduction, spoiler, reverse, braking, and deceleration sequence
Cases that add context
ASIP provides a concise learning index. The investigation authority report remains the definitive source.
Editor-reviewed starting points
These records include a deeper ASIP editorial review. Continue to the full evidence index below for direct matches and broader manufacturer, regulator, and investigation reading.
AC 120-82 — Flight Operational Quality Assurance
Active FAA guidance describes one acceptable way to establish a voluntary FOQA programme using de-identified aggregate flight data to identify and reduce operational risk.
Official sourceCAP 739 — Flight Data Monitoring, Second Edition
CAP 739 presents FDM as the systematic, proactive use of routine digital flight data within a non-punitive, just safety culture.
Official sourceTitle or indexed metadata explicitly matches this topic.
Related collection material for adjacent systems, phases, and defenses.
Manufacturer, regulator, investigation, and safety-organization sources.
Where the reading comes from
54 source records
Official links · no copied report files54 source records match the current evidence filters.
SAFO 06010 — Preventing accidents following rejected takeoff ( RTO ): Pilot Guide
Official U.S. Federal Aviation Administration material indexed for takeoff. Open the publisher source for the complete document, scope, and current status.
Open official sourceLow Speed Rejected Take-Off upon Engine Failure
Official Airbus Safety First material indexed for takeoff and powerplant. Open the publisher source for the complete document, scope, and current status.
Open official sourceThrust Reverser Selection is a Decision to Stop
Official Airbus Safety First material indexed for powerplant and human factors. Open the publisher source for the complete document, scope, and current status.
Open official sourceSAFO 23004 — Boeing Multi Operator Message (MOM); MOM-MOM-23-0179-01B and Erroneous Maximum Takeoff Weight (MTOW) Calculation from Boeing Performance Engineer's Tool (PET) Reporters
Official U.S. Federal Aviation Administration material indexed for takeoff and maintenance. Open the publisher source for the complete document, scope, and current status.
Open official sourceSAFO 18009 — SAFO 18009, Risk of Runway Number Transposition Leading to a possible "Runway Overrun" During Takeoff at San Francisco International Airport ( SFO )
Official U.S. Federal Aviation Administration material indexed for approach and landing and takeoff. Open the publisher source for the complete document, scope, and current status.
Open official sourceSAFO 17011 — SAFO 17011, Runway Status Lights ( RWSL )
Official U.S. Federal Aviation Administration material indexed for approach and landing and runway safety. Open the publisher source for the complete document, scope, and current status.
Open official sourceSAFO 17012 — SAFO 17012, High Collision Risk During Runway Crossing
Official U.S. Federal Aviation Administration material indexed for approach and landing and runway safety. Open the publisher source for the complete document, scope, and current status.
Open official sourceSAFO 16008 — SAFO 16008, Reducing the Risk of Runway Excursions During Takeoff
Official U.S. Federal Aviation Administration material indexed for approach and landing and takeoff. Open the publisher source for the complete document, scope, and current status.
Open official sourceSAFO 16009 — SAFO 16009, Runway Assessment and Condition Reporting, Effective October 1, 2016
Official U.S. Federal Aviation Administration material indexed for approach and landing and runway safety. Open the publisher source for the complete document, scope, and current status.
Open official sourceSAFO 11003 — Embraer ERJ-190 Series Thrust Reverser Cowling Safety
Official U.S. Federal Aviation Administration material indexed for powerplant. Open the publisher source for the complete document, scope, and current status.
Open official sourceSAFO 11004 — Runway Incursion Prevention Actions
Official U.S. Federal Aviation Administration material indexed for approach and landing and runway safety. Open the publisher source for the complete document, scope, and current status.
Open official sourceSAFO 11005 — Laundering of Scrapped Jet Engine Parts
Official U.S. Federal Aviation Administration material indexed for powerplant. Open the publisher source for the complete document, scope, and current status.
Open official sourceSAFO 11009 — Runway Status Lights ( RWSL ), for posting on the FAA public website for SAFOs
Official U.S. Federal Aviation Administration material indexed for approach and landing and runway safety. Open the publisher source for the complete document, scope, and current status.
Open official sourceSAFO 11011 — Runway Excursions at Jackson Hole Airport ( JAC )
Official U.S. Federal Aviation Administration material indexed for approach and landing and runway safety. Open the publisher source for the complete document, scope, and current status.
Open official sourceSAFO 10001 — Possible effects of Thickened Anti-icing Fluids on Takeoff Rotation for Airplanes withUnpowered Elevator Controls
Official U.S. Federal Aviation Administration material indexed for takeoff and weather. Open the publisher source for the complete document, scope, and current status.
Open official sourceSAFO 10021 — Adverse Levels of Porous Coke for All Engine and Oil Combinations
Official U.S. Federal Aviation Administration material indexed for powerplant. Open the publisher source for the complete document, scope, and current status.
Open official sourceSAFO 09002 — In-flight slippage of pilot and co-pilot seats on Cessna models 303, 336 and 337; and all legacy (pre-1986) single-engine Cessna models 150, 152, 170, 172, 175, 177, 180, 182, 185, 188, 190, 195, 205, 206, 207 and 210
Official U.S. Federal Aviation Administration material indexed for powerplant. Open the publisher source for the complete document, scope, and current status.
Open official sourceSAFO 09008 — Proper Identification and Procedures During In-Flight Engine Failures
Official U.S. Federal Aviation Administration material indexed for powerplant. Open the publisher source for the complete document, scope, and current status.
Open official sourceLessons learned
1The decision and the stopping sequence are one safety system
2A low-speed reject and a high-speed reject have different risk profiles