Green box

[N.N.C]

Looking for some help.
At certain airports I find, on Jeppesen plates, reference of a ‘green box’.
Could anyone help me out?
What does it mean and how is it being used by apron controllers?

thanks,

N.N.C.

[Checkboard]

Like the Apron marking here? :

http://ww1.jeppesen.com/documents/aviation/notices-alerts/chart-alert/KORD/KSEA_SMGCS.pdf

I don't know either.

[Checkboard]

They may be push back spots? Tel Aviv (for instance) use specific push back positions, rather than just pushing back onto a taxiway.

[Miles Magister]

I think it is a runway/taxiway hot spot. I think it was published in a chart alert and is described in KSEA 20-9A but I do not have access to it to verify as I saw it on some one else's system.

MM

[pattern_is_full]

Comparing Checkboard's example to the real airport aerial pix - at those locations (NOT TO SCALE) there are small green boxes astride taxi lines, containing numbers corresponding to the GEOGRAPHIC POSITION MARKINGS on the chart.

E.G. (at GPM 50) - https://www.google.com/maps/place/Seattle-Tacoma+International+Airport/@47.453925,-122.3042373,63m/data=!3m1!1e3!4m5!3m4!1s0x0:0x99d3d9c4c7dc37b7!8m2!3d47.4502 499!4d-122.3088165

The sample chart IS labeled as "Low Visibility Taxi Routes" - so I think those are just additional markings to tell pilots who cannot see anything else at the moment (in fog, etc.) exactly where they are on the ramp/apron.

[VThokie2]

Comparing Checkboard's example to the real airport aerial pix - at those locations (NOT TO SCALE) there are small green boxes astride taxi lines, containing numbers corresponding to the GEOGRAPHIC POSITION MARKINGS on the chart.

E.G. (at GPM 50) - https://www.google.com/maps/place/Seattle-Tacoma+International+Airport/@47.453925,-122.3042373,63m/data=!3m1!1e3!4m5!3m4!1s0x0:0x99d3d9c4c7dc37b7!8m2!3d47.4502 499!4d-122.3088165

The sample chart IS labeled as "Low Visibility Taxi Routes" - so I think those are just additional markings to tell pilots who cannot see anything else at the moment (in fog, etc.) exactly where they are on the ramp/apron.

Nothing to do with LVO or hotspots.... simply ramp entry/exit reference spots, on the way out in SEA you would hear Ramp: “Taxi up to greenbox 99, then contact ground for taxi”
On the way in you would receive instructions from ground: “Cross 16L join bravo contact ramp approaching spot 99”.

[Spooky 2]

Nothing to do with LVO or hotspots.... simply ramp entry/exit reference spots, on the way out in SEA you would hear Ramp: “Taxi up to greenbox 99, then contact ground for taxi”
On the way in you would receive instructions from ground: “Cross 16L join bravo contact ramp approaching spot 99”.


I believe you are correct . Ramp Control will give you a clearance to push offf the gate and then taxi tio the respective box and then once there you should contact Ground for further taxi instructions. SEA uses this in CAVU conditions as well as reduce visibility.

[VThokie2]

I believe you are correct . Ramp Control will give you a clearance to push offf the gate and then taxi tio the respective box and then once there you should contact Ground for further taxi instructions. SEA uses this in CAVU conditions as well as reduce visibility.

Yup, I operate in and out of there at least once a month.... just a Seattle”ism”, many other US airports have their own variety, Philly comes to mind!

[N.N.C]

Thanks a lot for the replies 👍👍