What the profile screens for
Brake pressure or command remains applied for an extended portion of taxi while the aircraft continues moving.
Why it matters
Sustained brake use can increase brake temperature and may indicate speed-management, thrust, or brake-system concerns.
Build the event around relationships—not one number.
Define the operating context
Identify the taxi state, aircraft configuration, location, and any required external data before applying logic.
Screen the signal relationship
Use validated combinations of brake pressure, brake temperature, groundspeed; avoid treating one isolated value as the whole event.
Confirm it is a genuine event
Check polarity, units, source, recording rate, dropouts, air/ground logic, persistence, and false-positive mechanisms.
Connect data to the safety question
Review procedures, reports, weather, airport and traffic context, exposure, recurrence, and the strength of the related barriers.
Recorded signals that may help explain the event.
Engine thrust
One or more recorded measures of commanded or produced propulsion; the correct signal depends on engine and aircraft type.
Open parameter guide ↗psi, bar, or %Brake pressure
Hydraulic pressure or command associated with wheel braking; it is not a direct measurement of tyre/runway friction.
Open parameter guide ↗Questions before conclusions
- Q1
Are brake pressure, brake temperature, groundspeed valid, correctly decoded, time-aligned, and sampled well enough for this event?
- Q2
What changed immediately before, during, and after the prolonged brake application during taxi indication?
- Q3
How do aircraft configuration, weather, airport geometry, automation state, and crew reports change the interpretation?
- Q4
Which current flight manual, SOP, maintenance, or operator event definition controls the final conclusion?
Safety topics that broaden the event review.
Runway Excursion
Explore overruns and veer-offs as the combined result of approach energy, runway condition, touchdown, deceleration, and directional control.
Open topic brief ↗Flight OperationsRejected Takeoff
Understand the time-critical stop decision through speed, failure recognition, runway remaining, braking, spoilers, and reverse thrust.
Open topic brief ↗12 useful starting points
Terminology and topic relationships select these links; the publisher source remains authoritative.
Annual Safety Review 2025
EASA's review uses occurrence and accident information to describe performance across aviation domains and to support the European safety-risk-management process.
Open official sourceStatistical Summary of Commercial Jet Airplane Accidents, 1959–2024
Boeing's 56th annual statistical summary organizes commercial-jet accident data using stated definitions and the CAST/ICAO occurrence taxonomy.
Open official sourceIATA Annual Safety Report — 2024
IATA's 61st annual report provides an interactive, method-defined view of commercial aviation accident performance and contributing-factor classifications.
Open official sourceAC 91-79B — Aircraft Landing Performance and Runway Excursion Mitigation
This FAA circular brings together landing-performance planning, time-of-arrival assessment, RCAM information, and operational practices for reducing runway-excursion risk.
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 08003 — Guidance Material for Contaminated Runway Landing Operations
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 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 sourceA320 – Runway overrun
Official Airbus Safety First material indexed for approach and landing and runway safety. Open the publisher source for the complete document, scope, and current status.
Open official sourceFurther Preventing Runway Overrun
Official Airbus Safety First material indexed for approach and landing and runway safety. Open the publisher source for the complete document, scope, and current status.
Open official sourceIs it a Loss of Braking?
Official Airbus Safety First material indexed for runway safety. Open the publisher source for the complete document, scope, and current status.
Open official sourceLateral runway excursions upon landing
Official Airbus Safety First material indexed for approach and landing and runway safety. 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 source