NAV Accuracy
Gate
Give it a flight phase, a GPS state, and an EPU, and it resolves the way the FMS does: NAV ACCUR HIGH or LOW, whether GPS PRIMARY still holds, and whether you may continue the approach. Try 3 phases free below - enter your email to unlock all 6 and get the full printable card in your inbox.
Live preview - 3 of 6 flight phases
The Golden Rule · Gate Principle #1
The box never tells you where you are. It tells you how much it trusts where it thinks it is. HIGH is a confidence estimate, not a measurement of truth.
NAV ACCUR HIGH or LOW, GPS PRIMARY or lost, continue or interrupt - all three answers change the moment the navigation picture does. That is the whole test below.
Set the picture, read the answer
En route, Terminal, and the RNAV(GNSS) approach are live right now. The other 3 phases (Other approach, Oceanic RNP 10, and RNP AR) unlock the moment you enter your email below.
1 · Flight phase
Gate result
Locked - full gate only
The other 3 phases, plus the reasoning
The full Gate covers every phase an examiner will push on, and drills the reasoning the annunciation never spells out.
Enter your email below to unlock all 6 phases and the reasoning. Free. No credit card required.
4-step drill
Say the answer out loud before you touch a control: HIGH or LOW, PRIMARY or lost, continue or interrupt. The gap between your guess and the gate is your study list. The printable card you get by email carries the full reasoning behind every answer - including the classic PRIMARY-LOST-but-HIGH trap and the RNAV(GNSS) hard line.
Unlock the Gate + Get the Card
Enter your email and all 6 flight phases unlock on this page instantly, plus the full 2-page printable A320 NAV Accuracy Card lands in your inbox - A4 and Letter, ready to print.
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