Alt Intervene Clears Only What Lies Between You and Your Cleared Level (B)
This is one of the most misunderstood VNAV behaviours in the 737 FMC — get it wrong and the aircraft simply stops climbing where you least expect it.
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Tech & AI
Alt Intervene Button Clears Only Restrictions Below Your Cleared Level
Miss this distinction in the sim and your aircraft will silently stop climbing short of your clearance — here is exactly why it happens and how to fix it.