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Guest wtsapchy

vnav path

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Guest wtsapchy

Hi all,I have crz alt set to FL410 in FMC, alt window in MCP selected 41000, altimeter set to standard. My 747 climbed to FL410 in vnav speed mode and switched to vnav path at FL410. Everything was normal.But afterwards, the plane could not seem to stop at FL410. There was a slight positive VSI and the 747 continued to climb indefinitely. I have to use alt hold to stop the climb at about FL430 eventually. Was I doing something wrong ?Daniel

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Guest Daniel Slade

Hi DanielCheck that you have both the VNAV active (VNAV BUTTON LIT) and one of the autopilot (CMD BUTTONS LIT).If you still have problems can you post a screen shot of the legs page (FMC) and the 2D Cockpit view (not in zoom mode).Hope this helps Daniel

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