What the profile screens for
Recorded, entered, computed, or independently derived mass data are inconsistent beyond a validated comparison rule.
Why it matters
Mass-data error can affect performance, speeds, trim, structural margins, landing distance, and automation targets.
Build the event around relationships—not one number.
Define the operating context
Identify the taxi / takeoff / landing state, aircraft configuration, location, and any required external data before applying logic.
Screen the signal relationship
Use validated combinations of gross weight, takeoff weight, landing weight; 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.
Questions before conclusions
- Q1
Are gross weight, takeoff weight, landing weight valid, correctly decoded, time-aligned, and sampled well enough for this event?
- Q2
What changed immediately before, during, and after the weight or balance data mismatch 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.
Takeoff performance calculation
Determination and independent checking of thrust, speeds, runway, obstacle, weight, weather, and configuration inputs used for takeoff.
Open topic profile ↗SAT-098 · Ground operations & maintenanceLoad control and weight balance
Accurate collection, calculation, communication, loading, revision, and cross-checking of aircraft mass and center-of-gravity information.
Open topic profile ↗Landing Performance
Connect approved landing-distance data with current wind, runway condition, aircraft state, touchdown point, and deceleration technique.
Open topic brief ↗Aircraft SystemsEngine Failure and Thrust Loss
Separate commanded thrust, actual engine response, system effects, and crew management across partial, asymmetric, and complete thrust-loss events.
Open topic brief ↗Safety ManagementSafety Management Systems
Connect policy, risk management, assurance, and promotion so hazards are controlled and performance is reviewed over time.
Open topic brief ↗12 useful starting points
Terminology and topic relationships select these links; the publisher source remains authoritative.
Annex 19 — Safety Management, Third Edition
Annex 19 consolidates ICAO safety-management provisions, including State safety responsibilities, SMS, safety-data collection and processing, and the protection and sharing of safety information.
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 sourceAC 120-92D — Safety Management Systems for Aviation Service Providers
FAA guidance explains performance-based, scalable approaches to integrating safety policy, risk management, assurance, and promotion into aviation organizations.
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 sourceSafety Alert SA-077 — Stabilized Approaches Lead to Safe Landings
The NTSB alert highlights the need to establish and maintain a stabilized approach and to go around when an approach falls outside applicable criteria.
Open official sourceSafety Management Manual (Doc 9859), Fourth Edition
ICAO's fourth-edition manual explains how safety data, risk management, assurance, culture, and governance work together in State and service-provider safety management.
Open 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.
Open official sourceAC 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.
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 sourceAirbus Brake Testing
Official Airbus Safety First material indexed for runway safety. Open the publisher source for the complete document, scope, and current status.
Open official source