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Fatigue Risk Management

Be Aware of the Risk of Crew Fatigue

Boeing and Jeppesen have jointly developed FRM functionality for allowing airlines to control crew fatigue and fatigue risk in crew planning and operation. The functionality is built into the Jeppesen Crew Management products so that scientific fatigue/alertness models can be accessed while constructing and maintaining crew schedules.

The FRM functionality allows for individual predictions on each flight of both crew alertness and associated risk. The alertness and risk information is available both in the GUI for the end-user but also to the optimizers during pairing and roster creation.

The availability of this information makes it possible to “build” alertness into rosters in the planning stage and to control and monitor it during manual roster maintenance and day-of-operation changes.

Alertness can be built into the crew schedules where it decreases fatigue risk the most – thus addressing the “tail” of the risk distribution. An operator may both use strict limits on fatigue risk, incentives to avoid the risk, alerts on risk thresholds, or any combination of these.

The Jeppesen rule engine RAVE, used in the Carmen suite of products, is able to connect to any scientific fatigue model compliant with CAPI;
the “Common Alertness Prediction Interface”. CAPI enables high-speed integration with optimizers and aligns alertness prediction output to the 0-10 000 scale.

Boeing Alertness Model
The Boeing Alertness Model, BAM, is a bio-mathematical model of alertness, built on the Three Process Model of Alertness and extended with advanced sleep prediction, task load, augmentation, and ability to blend in sections of actual sleep when available. BAM has been tested with the Jeppesen Crew Management product suite and is fully CAPI compliant.

SMS Integration
In the Carmen suite, an add-on “risk layer” is available, forming an essential part of a Safety Management System (SMS) – built from FAA InFO 07015.
The risk layer is fully configurable per operator and allows for a detailed pre-flight risk assessment to be automated considering factors such as pilot experience, airport properties, airport approach properties, light conditions, weather, and tail characteristics etc.

“What-if” scenarios
The “what-if” scenario capability allows schedulers and airline safety officials to assess possible schedules in terms of predicted alertness, overall risk, productivity, and other key dimensions, such as quality of life and robustness.
Methodology and services for rule analysis is available for identifying both loop-holes (potentially unsafe conditions) as well as sensible alleviations.
The methodology allows for a reformulation of rules to “catch” fatigue best possible, while retaining, or even enhancing, crew productivity.

FRM-based crew scheduling provides control of predicted crew alertness level and associated risk. The system provides powerful “what-if” capability to evaluate effects on productivity and fatigue resulting from rule changes. The detailed “what-if” analysis of the rules can help you identify loop-holes and potential solutions and find the best rule formulations from both a fatigue and crew productivity perspective.

Download the Fatigue Risk Management brochure. (pdf)

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