Questions tagged [dme]
DME (Distance Measuring Equipment) is, as the name suggests, a system for measuring the slant distance between a suitably-equipped aircraft and a ground-based transponder station; DME stations are often colocated with VOR or ILS installations.
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When is DME not required for a VOR approach?
The only time instance I've seen is when there are published times at different speeds for flying the distance between the FAF and the MAP. Are there any other ways this is achieved?
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Difference between VOR approach (with DME required) and VOR DME approach?
VOR-A approach into KSFY
VOR/DME-A approach into 57C
These are two random examples of approaches I found that appear identical in the way they'd be flown and their setup. The first at KSFY is titled ...
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When should timing begin for the outbound leg in a DME hold?
In this example, when the aircraft is turning to the outbound leg, when do I start the timer? Is it after the end of the turn? At least, that is what I remember from 8168. Is this correct? In case of ...
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What point are these distances from?
I am kind of confused with this approach and I come up with multiple questions.
First, in the profile view, the FAF is depicted 3.1 NM away and MAPt is depicted 0.6 NM away. My understanding is these ...
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What are the path limits when flying a DME arc?
What are the flight path limits for an aircraft on a DME arc?
I remember my instructor telling me that it was 0.5NM. For example, in a 18NM DME arc, the aircraft can be between 18.5 and 17.5NM.
Is ...
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How can I identify MAP for LOC/DME approach RWY3 at KDRO?
On this IAP procedure chart, I assume the MAP for the LOC/DME approach would be 0.4 or 0.5 NM away from the runway, and identify the point by using DME 1.4-1.5 NM point. But I am not sure if I am ...
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How can you identify VDP on Prescott ILS 21L without DME?
Prescott ILS 21 L IAP does not note DME required, although it clearly says "Use I-PRC DME on localizer course". If you do not have DME, can you do this approach? or if your aircraft is not ...
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Although the missed approach point in the profile view is 1.1 DME-400 feet, the GS out reference altitude is given as 410 feet in 1.0 DME. HOW?
Although the missed approach point in the profile view is 1.1 DME-400 feet, the GS out reference altitude is given as 410 feet in 1.0 DME. HOW?!
Based on GS out reference altitudes, we are expected ...
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Timing not authorized for defining the MAPt
Does anyone know why some charts have written "Timing not authorized for defining the MAPt"?
Could this happen when the DME required is written on the chart?
Thank you,
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Can we do this approach using suitable RNAV instead of ADF/ DME,
KCEW has VOR-A approach. And this has NOTME FIX MINIMA, which requires ADF or DME. However, these ADF or DME are used to find NOTME FIX, (to detect direction of LOM or Distance). In other words ADF ...
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An Aircraft is a flight level 150 the DME is at sea level find maximum and minimum range?
I have taken this question from keith williams book. I know that we can find the maximum range of DME by line of sight formula which is R=1.23(Ht + Hr). But I don't know how to determine it's minimum ...
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What are the modulation parameters of a DME?
I am having difficulties finding specific information about DME pulse pair modulation. As far as I understand, the gaussian shaped pulse pairs are modulated using amplitude modulation. The carrier ...
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How can the A320 receive 3 DME signals if it has only 2 DME receivers?
How can the A320 receive simultaneously 3 DME signals (VOR1 + VOR2 + ILS) if it has only 2 DME receivers (and antennas)?
Does it multiplex them in some way? If yes, does it mean if one DME receiver ...
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How does an airborne DME unit differentiate itself?
The FAA's IFR handbook glosses over a keypoint:
The aircraft DME transmits interrogating radio frequency (RF) pulses, which are received by the DME antenna at the ground facility. The signal ...
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"w/o DME" minimums on DME required approach
I've found this ILS-Y 26 EPBY approach, where there are two LOC minimums: With D3.0 and w/o D3.0 on Jeppesen chart. On the original AIP charts it says "When stepdown fix not received", but ...
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