What this profile covers
Availability, selection, performance, indication, and limitations of engine, wing, probe, windscreen, and propeller ice protection.
Why it matters
System events can alter aircraft capability, redundancy, workload, procedures, and the reliability of other safety barriers. For ice protection systems, useful analysis connects the immediate event with exposure, defenses, recurrence, and the wider operating system rather than treating one observation as a final conclusion.
System degradation, warning integrity, technical condition, dispatch decisions, and continued airworthiness.
Understand the subject before interpreting a signal.
In plain language, this profile examines availability, selection, performance, indication, and limitations of engine, wing, probe, windscreen, and propeller ice protection.
Build a multi-source picture
- Warnings and system parameters
- Technical logs and maintenance history
- Crew reports and operational response
- Engineering inspection, test, and component evidence
Timing, relationships, and recurrence
Relevant recorded context may include vertical speed, calibrated airspeed, engine thrust. Use validated mappings and examine signal relationships over the applicable flight phase.
Do not turn an observation into a conclusion
Flight data can reconstruct symptoms and response but does not replace troubleshooting, approved maintenance data, inspection, or an engineering airworthiness decision.
Keep controlling material visible
Apply the current approved manuals, procedures, authority requirements, investigation evidence, and validated organizational definitions for any operational decision.
Vertical speed
The aircraft's vertical rate. Different recorded sources and smoothing can produce materially different values, especially during flare and touchdown.
Open parameter guide ↗ktCalibrated 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 ↗From a broad topic to a defensible safety review.
Define
State what ice protection systems means for the aircraft, operation, authority, and organization in scope.
Verify
Confirm the provenance, quality, timing, units, completeness, and limitations of every data source used.
Describe
Reconstruct what happened and quantify relevant exposure before discussing causes or corrective action.
Corroborate
Compare flight data with reports, operational context, technical evidence, and authoritative source material.
Test barriers
Identify which preventive, recovery, and consequence-mitigation controls should have worked and how their performance can be measured.
Assure
Assign proportionate action and verify whether the control and safety performance improve without harmful unintended effects.
Questions before conclusions
- Q1
How is ice protection systems defined for the aircraft, operation, authority, and organization being reviewed?
- Q2
Which precursors, recorded signals, reports, and external data would confirm the event and describe its context?
- Q3
Which preventive, recovery, and consequence-reduction barriers should work, and where could they weaken?
- Q4
What does recurrence, exposure, severity potential, or change over time show before choosing a safety action?
2 connected event profiles
These are terminology and family connections for exploration—not claims that FDM alone can determine the topic.
In-flight icing encounter candidate
Temperature, anti-ice state, speed, drag, and aircraft-performance changes indicate possible exposure to icing conditions.
Open FDM profile ↗FDM-119 · Systems & warningsAnti-ice configuration mismatch
Anti-ice or de-ice system state differs from the validated environmental, phase, or procedure context.
Open FDM profile ↗Go deeper into the closest ASIP research guides.
Hard Landing
A structured guide to recognizing, reporting, analyzing, and responding to a suspected touchdown load exceedance without confusing passenger perception with an engineering determination.
Open intelligence brief ↗Aircraft SystemsFlight-Deck Automation
Use mode awareness, active monitoring, and aircraft-response verification to keep automation aligned with crew intent.
Open intelligence 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 intelligence brief ↗Aircraft SystemsFire and Smoke
View fire safety as detection, containment, checklist action, diversion, evacuation, and rescue barriers.
Open intelligence brief ↗12 useful starting points
Original ASIP summaries lead to publisher pages. ASIP does not copy or host the reports.
SAFO 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 10006 — In-Flight Icing Operations and Training Recommendations
Official U.S. Federal Aviation Administration material indexed for weather and human factors. Open the publisher source for the complete document, scope, and current status.
Open official sourceSAFO 08006 — 14 CFR Parts 91 and 135, Flight Into Known or Forecast Severe Icing Conditions
Official U.S. Federal Aviation Administration material indexed for weather. Open the publisher source for the complete document, scope, and current status.
Open official sourceSAFO 07009 — Cessna CE-208 and CE-208B Specific Pilot Training Requirements for Flight Into Icing Conditions
Official U.S. Federal Aviation Administration material indexed for weather and human factors. Open the publisher source for the complete document, scope, and current status.
Open official sourceSAFO 06002 — Ground deicing practices for turbine aircraft in nonscheduled 14 CFR Part 135 operations and in Part 91
Official U.S. Federal Aviation Administration material indexed for ground operations. Open the publisher source for the complete document, scope, and current status.
Open official sourceSAFO 06006 — Loss of air data sensors on the Boeing 717 in heavy rain or icing
Official U.S. Federal Aviation Administration material indexed for weather. Open the publisher source for the complete document, scope, and current status.
Open official sourceSAFO 06016 — In-Flight Icing, Turbo Propeller Powered Airplanes
Official U.S. Federal Aviation Administration material indexed for weather. Open the publisher source for the complete document, scope, and current status.
Open official sourceFlight Crews and De-Icing Personnel
Official Airbus Safety First material indexed for weather and ground operations. Open the publisher source for the complete document, scope, and current status.
Open official sourceProper Landing Gear Servicing for Safe Operations
Official Airbus Safety First material indexed for approach and landing and maintenance. Open the publisher source for the complete document, scope, and current status.
Open official sourceSafe Oxygen Servicing
Official Airbus Safety First material indexed for fire and smoke and maintenance. Open the publisher source for the complete document, scope, and current status.
Open official sourceNTSB Safety Alert SA-006 — Aircraft Ground Icing
Official U.S. National Transportation Safety Board material indexed for weather and ground operations. Open the publisher source for the complete document, scope, and current status.
Open official sourceNTSB Safety Alert SA-014 — Aircraft Inflight Icing
Official U.S. National Transportation Safety Board material indexed for weather. Open the publisher source for the complete document, scope, and current status.
Open official sourceCommon Taxonomy Team
International work on common aviation occurrence categories and definitions for consistent reporting and analysis.
Open referenceSafety Risk Management
European safety-risk process connecting data, safety issues, risk portfolios, priorities, and safety action.
Open referenceAnnual programmes and reports
Annual safety reviews and risk portfolios used to identify key risk areas, safety issues, and emerging issues.
Open referenceEuropean Plan for Aviation Safety 2025
A broad evidence-based portfolio showing the scale and connected nature of current aviation safety issues.
Open referenceOperational issues index
A practical discovery index for operational safety subjects; official authority and manufacturer sources remain controlling where applicable.
Open reference