Which document should pilots consult for official definitions of flight categories such as LIFR and MVFR?

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Multiple Choice

Which document should pilots consult for official definitions of flight categories such as LIFR and MVFR?

Official definitions for flight categories like LIFR and MVFR come from the FAA and are published in the Flight Information Handbook. This document is the quick-reference source pilots use to determine the official weather category based on ceiling and visibility, which guides decisions about whether to fly IFR, VFR, or monitor for changes. While other resources discuss weather, procedures, or theory, they aren’t the official definitions used in aviation weather reporting and planning. So, consulting the Flight Information Handbook gives you the authoritative thresholds you need, and be sure to check the latest edition for any updates.

Official definitions for flight categories like LIFR and MVFR come from the FAA and are published in the Flight Information Handbook. This document is the quick-reference source pilots use to determine the official weather category based on ceiling and visibility, which guides decisions about whether to fly IFR, VFR, or monitor for changes. While other resources discuss weather, procedures, or theory, they aren’t the official definitions used in aviation weather reporting and planning. So, consulting the Flight Information Handbook gives you the authoritative thresholds you need, and be sure to check the latest edition for any updates.

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