GLS is described as having lateral and vertical guidance with integrity limits similar to which concept?

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Study for the Pilot's Handbook of Aeronautical Knowledge Exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

GLS is described as having lateral and vertical guidance with integrity limits similar to which concept?

Explanation:
GLS provides both lateral and vertical guidance with integrity limits that align with BARO-VNAV. Both systems offer a vertical path with defined altitude constraints and an integrity framework that ensures obstacle clearance along that path, using a reference source to maintain the vertical profile (barometric data for BARO-VNAV, GNSS with GBAS corrections for GLS). While ILS also provides lateral and vertical guidance, its integrity is tighter because it is a true precision approach; GLS is more comparable to BARO-VNAV in how the vertical guidance is defined and protected within its service limits.

GLS provides both lateral and vertical guidance with integrity limits that align with BARO-VNAV. Both systems offer a vertical path with defined altitude constraints and an integrity framework that ensures obstacle clearance along that path, using a reference source to maintain the vertical profile (barometric data for BARO-VNAV, GNSS with GBAS corrections for GLS). While ILS also provides lateral and vertical guidance, its integrity is tighter because it is a true precision approach; GLS is more comparable to BARO-VNAV in how the vertical guidance is defined and protected within its service limits.

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