17 votes
Accepted

Why does a de Havilland Comet have radiation symbols on the instrument panel?

Instrument markings back then were painted with luminescent paint containing radium, so they would glow in the dark continuously without having to be energized by a light source. You can buy luminous ...
John K's user avatar
  • 131k
14 votes

Garmin G1000 'Waves in a Circle' Symbol?

It's a county flood warning: COUNTY WARNINGS County data (Figure 6-38) provides specific public awareness and protection weather warnings from the National Weather Service (NWS). This can include ...
TypeIA's user avatar
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12 votes

Does anyone know what this approach chart symbol is?

What you want is the Frontmatter to the Terminal Procedures Publication, and in particular the pages under "Approach Lighting System" -- these document all the various permutations of visual approach ...
UnrecognizedFallingObject's user avatar
9 votes
Accepted

What are these blue lines around the runway at the airport chart that I marked with red line?

They are in fact waterways: irrigation ditches or channels. The Jeppesen airport chart legend lists them as 32 — Ditches in the vicinity of the airport are depicted. For example, looking at a Google ...
randomhead's user avatar
  • 15.2k
8 votes
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What is a "BEACON"?

In general, a beacon in aviation is defined by ICAO Annex 14 as follows: Aeronautical beacon. An aeronautical ground light visible at all azimuths, either continuously or intermittently, to designate ...
Bianfable's user avatar
  • 55.9k
8 votes

What is the purpose of these "stickers" in the F/A-18 Super Hornet fuselage?

It may or may not be being used in this application, but they are location markers, usually used in weapons separation tests to record the movement and behavior of stores in the airstream as they ...
Romeo_4808N's user avatar
  • 73.7k
8 votes

Why are different distances listed for the ILS and the LOC on this approach chart?

A very weird case, but each country can do things their own way. The ILS FAF - GS intercept at 2700' - is 0.2 NM inside the LOC FAF. In the FMC database, the former is coded as FI01, and the latter is ...
Ralph J's user avatar
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7 votes
Accepted

What does "/" (slash) mean in the picture below?

According to the Introduction to Jeppesen Navigation Charts, it means that RVR and meteorological visibility are equivalent here: 3 — Visibility values in meters are labeled with an "m" ...
Bianfable's user avatar
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6 votes
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What altitude does the "Apt Elev" on the Jeppesen charts represent?

So this is right in my line of work. The discrepancies you see may be indicative of sloped runway profiles (with the higher elevation being in the middle). More likely however, it’s because not every ...
Timbo's user avatar
  • 444
5 votes
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What do the dates at the bottom right of the page mean? I shared the pictures

Those are the years in which that particular publication has been copyrighted by the Jeppesen company.
Romeo_4808N's user avatar
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5 votes
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Why is the distance between BRY VOR and missed approach point 0.2 DME in the plan view, while it is specified as 0.1 DME below?

This might be a mistake in the chart. The Introduction to Jeppesen Navigation Charts defines the number between two navaids/fixes as follows: 10 — Nautical Mile (NM) distance between two navaids and ...
Bianfable's user avatar
  • 55.9k
5 votes
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How can stand numbers 1, 2 and 3 have the coordinates of 07.9 minutes North ins, but stand number 9 have the coordinates of 07.8 minutes North?

Mistakes happen, and this is quite obviously an error. Not unlike your error of including an extra 0 in the original question! - "07.08" ;) Presumably someone creating the chart was ...
Michael Hall's user avatar
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5 votes
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There is a difference in the runway lighting systems symbolized in the planview and the lighting system specified in additional runway information?

HIALS stand for High Intensity Approach Lighting System. (as opposed to MIALS for Medium Intensity...) HIALS is a broad category of different approach lighting configurations, (all high intensity) ...
Michael Hall's user avatar
  • 26.1k
5 votes
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Why is the highest point value (6681') lower than the contour interval value of 7000'?

The orange area on the chart means elevation is between 5000 and 7000 ft AMSL according to the contour intervals legend. The white area is anything below 5000 ft AMSL. So the highest point of 6681' is ...
Bianfable's user avatar
  • 55.9k
4 votes
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What does the solid black star symbol on this VNC chart mean?

Here's how to decode S2 Fl R 209: S1 - Identifier. Bearing relative to an aerodrome (N, W, NE). If there are multiple with the ...
Tobias's user avatar
  • 821
4 votes

Are there different symbols or graphics to identify different types of GA fuels?

As Walker notes in his answer AvGas is typically noted by color when talking about telling it apart. In terms of aircraft markings for fuel this is governed by FAA FAR 23.1557 Miscellaneous markings ...
Dave's user avatar
  • 101k
4 votes

What is the purpose of an MRA at an intersection such as the one depicted here?

You can't identify the intersection precisely using the DRK and GCN radials because they're too nearly reciprocals of one another. With thin lines on paper, that works well, but with the actual ...
Ralph J's user avatar
  • 51.5k
4 votes
Accepted

Does this symbol in the pictures below represent height above ground level or altitude above sea level?

The Jeppesen Charts legend explains the symbol as follows: 17 — Some, but not all, terrain high points and man-made structures are depicted along with their elevations. Generally only high points 400’...
Bianfable's user avatar
  • 55.9k
3 votes

What do the dates at the bottom right of the page mean? I shared the pictures

It is a requirement of copyright notices that the year of publication be included. If parts of a publication were published at different times then the year of publication for each part needs to be ...
DJClayworth's user avatar
  • 4,093
3 votes
Accepted

Which of the arrows in the magnetic variation symbol represents which North value (Magnetic N, True N)?

The chart is always drawn with true north pointing straight up. The magnetic variation is given on the arrow pointing along the local direction of the field lines (not technically towards magnetic ...
Bianfable's user avatar
  • 55.9k
3 votes
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What exactly does the expression "higher straight-in minimums" describe as "higher" relative to which value?

It's visibility. For Cat B, your required circling vis is 1600m, UNLESS the ALS is out of service (and the non-CDFA case) - in which case you need 2000m (which is the "higher straight-in minimums&...
Ralph J's user avatar
  • 51.5k
3 votes
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What are the names by which runways are classified according to the configuration of the placement of the approach lighting systems?

Here's the reference material for US airports. I suspect from your airport diagram that you may not be referring to US: Figure from the US AIM (Aeronautical Information Manual), located online here. ...
Max R's user avatar
  • 3,790
3 votes
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Why are the symbols of the markings on the ground given differently on two different charts of the same AIP?

Either symbol is appropriate: It's hard to know why two depictions of the same thing are shown differently, I suspect it has something to do differing departments/processes used to create the content....
Jamiec's user avatar
  • 33k
2 votes

What does this star symbol mean in the airport chart?

According to the FAA Airport diagram legend both a 5 point star with and without an enclosing circle both identify a beacon at the airport. Further details can be found on the FAA website, towards the ...
Jamiec's user avatar
  • 33k
2 votes

What exactly is the difference between "to","on" and "via" in the missed approach icons section of Jeppesen charts?

Top one: "TO" means after climbing to 3000 ft on the missed approach track, then proceed to the VOR, the missed approach fix, and pick up the 051ᵒ radial outbound, which will almost ...
John K's user avatar
  • 131k
1 vote
Accepted

Why is there a FAF database identifier with the code [FS044] even though it says no FAF and why is there an RNAV fix symbol for that point?

When you fly this approach with old school radio based navigation, you turn from the VOR onto a 224° track and maintain this track for 3 min (for CAT A & B aircraft) or 2 min (for CAT C & D ...
Bianfable's user avatar
  • 55.9k

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