A line-oriented study of alignment, reference validation, inertial drift, attitude disagreement, map shift and safe navigation reversion.
01 — STUDY INTRODUCTION
A known-valid reference before movement
Modern inertial-reference systems provide attitude, heading, position, velocity and navigation inputs. Professional preparation is not satisfied by a normal-looking panel: power, selector state, alignment status and present position must form one verified chain.
A stored position can be plausible and still be wrong. The crew should identify its source, compare it with an approved independent reference and verify the ND aircraft symbol and initial route geometry before movement.
02 — STUDY INTRODUCTION
Alignment is a process, not a timer
Full alignment establishes local vertical, inertial axes and heading through gravity and Earth-rate sensing. Duration and limitations vary with equipment, software, latitude and aircraft motion.
Fast realignment is appropriate only when the aircraft and operator authorize it and a previously valid inertial reference remains assured. It must never conceal an unexplained alignment problem.
NFA PROFESSIONAL
Continue with the full professional edition.
This page is a public introduction, not the complete member study.
Open member editionProfessional plan in preparation. Full-study language availability is separate from this introduction.Educational material. Not a replacement for manufacturer manuals, approved operator procedures, MEL/CDL, operational approvals, AIP/NOTAM or regulatory requirements.