Aug 16, 2023 · V/DEV refers to the difference in altitude between the aircraft’s actual position and its intended altitude. In this article, we will explore what V/DEV is, its significance in aircraft operations, and how it is managed on the Airbus A320.

垂直偏离指示（Vertical deviation indication，VDEV） 垂直偏离指的是飞机在进近时偏离了FMGC计算好的垂直航迹参数的情况。 VDEV在A320客机PFD中有两个版本：一种是只带点的VDEV标志，另一种是带有点和标尺的VDEV表。

Nov 15, 2007 · Tech Log - A320 VDEV symbol - I was studying about the PFD and came across this. "Upon reaching TOD and down to final approach guidance a magenta VDEV symbol is displayed. It indicates the aircraft vertical position in relation to the FMGC vertical profile".

Dec 6, 2015 · vdev is vertical guidance in a range of descent & approach modes. if you select an NPA approach in the FMGS / MCDU (ie not an ILS approach), and after the approach phase is activated (either manually or automatically), VDEV (the brick) is shown beside the PFD vertical altitude ladder for vertical guidance ... in both managed & selected modes.

Managed modes guide the aircraft along the vertical profile according to the data the pilot inserts into the MCDU. Flight Management (in the Flight Management and Guidance Computer) computes the corresponding guidance targets.

Jan 1, 2018 · Let's say you're on your descent procedure using managed modes (DES, NAV) at ECON speed (300ish kts) and you're on profile. The ATC requests a speed reduction to 230kts and you pull speed to comply with it. Right away, you'll get high on the profile...

Ł The VDEV can be read directly from the altitude scale. The display range of the altitude scale is approximately – 500 feet and each line equals 100 feet. The VDEV displayed is -150 feet or 150 ft. below the vertical profile. Ł If the VDEV exceeds the scale the symbol stays at the range limit.

Nov 19, 2007 · "Upon reaching TOD and down to final approach guidance a magenta VDEV symbol is displayed. It indicates the aircraft vertical position in relation to the FMGC vertical profile". So my question is, does it just act basically like a kind of large glide slope ?

"VDEV" when ½ dot deviation above or below path. "SINK RATE" when the descent rate exceeds 1 000 ft/min. Study with Quizlet and memorize flashcards containing terms like Speed (Define PM call + Deviation), V/S (Define PM call + Deviation), Roll (Define PM call + Deviation) and more.

Jun 30, 2020 · Hi, I've recently availed of your product and am currently a type-rated A320 pilot. I'd just like to ask why the "yo-yo" or the magenta donut indicating VDEV as well as the actual VDEV that shows when you arm the approach on the FCU are both showing green instead of the standard magenta?