What the profile screens for
Reverse remains selected below an aircraft- or operator-defined low-speed context during rollout.
Why it matters
The pattern may affect engine ingestion, system wear, directional control, noise, or procedure compliance.
Build the event around relationships—not one number.
Define the operating context
Identify the landing / taxi state, aircraft configuration, location, and any required external data before applying logic.
Screen the signal relationship
Use validated combinations of reverser position, engine thrust, 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.
Calibrated airspeed
Indicated airspeed corrected for instrument and position error, as provided by the aircraft data system.
Open parameter guide ↗% / ratio / aircraft-specificEngine thrust
One or more recorded measures of commanded or produced propulsion; the correct signal depends on engine and aircraft type.
Open parameter guide ↗discrete or %Thrust reverser status
Command and/or physical deployment state for reverse thrust, depending on recorded signal availability.
Open parameter guide ↗Questions before conclusions
- Q1
Are reverser position, engine thrust, groundspeed valid, correctly decoded, time-aligned, and sampled well enough for this event?
- Q2
What changed immediately before, during, and after the prolonged reverse thrust at low speed 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 ↗Flight OperationsLanding Performance
Connect approved landing-distance data with current wind, runway condition, aircraft state, touchdown point, and deceleration technique.
Open topic brief ↗12 useful starting points
Terminology and topic relationships select these links; the publisher source remains authoritative.
Thrust 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 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 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 09017 — Training for Bombardier Learjet 60 (Learjet 60) Pilots on Inadvertent Thrust Reverser Stowageon Takeoff and Landing
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 07007 — Thrust Lever Position during Landing with One Deactivated Thrust Reverser on Airbus A318, A319, A320, A321 Series Airplanes
Official U.S. Federal Aviation Administration material indexed for approach and landing and powerplant. Open the publisher source for the complete document, scope, and current status.
Open official sourceA340 Thrust Reverser Unlocked
Official Airbus Safety First material indexed for powerplant. 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 sourceThrust Reverser Selection Means Full-Stop
Official Airbus Safety First material indexed for powerplant. Open the publisher source for the complete document, scope, and current status.
Open official sourceThrust Reverser Unlock In-flight
Official Airbus Safety First material indexed for powerplant. Open the publisher source for the complete document, scope, and current status.
Open official sourceAnnual 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 source