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pikachu
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Posts: 165
Joined: Thu Feb 07, 2002 5:58 pm

Meaning of "/" on this Departure chart

Fri Mar 30, 2018 5:03 am

1. RNAV 1: GNSS/RADAR Required
2. RNP-1: GNSS Required

This is the information in the header of the chart.

The question is: What does the "/" between GNSS / RADAR mean?

GNSS AND RADAR or GNSS OR RADAR?
 
BravoOne
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Joined: Fri Apr 12, 2013 2:27 pm

Re: Meaning of "/" on this Departure chart

Fri Mar 30, 2018 1:27 pm

Its ould help if you showed the chart or at least the ICAO designator for the airport. Without seeing it I suspect that it reuires both GNS and radar are required, but of course that's what it says already. Is this a Jeppp chart by chnace?
 
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zeke
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Joined: Thu Dec 14, 2006 1:42 pm

Re: Meaning of "/" on this Departure chart

Fri Mar 30, 2018 10:48 pm

Should mean and, if it was or it would have a comma.

Eg. GNSS, DME/DME/IRU

GNSS or (DME and DME and IRU)
 
e38
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Re: Meaning of "/" on this Departure chart

Sun Apr 01, 2018 5:26 pm

pikachu, my interpretation is the procedure requires GNSS OR RADAR.

e38
 
BravoOne
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Re: Meaning of "/" on this Departure chart

Sun Apr 01, 2018 8:05 pm

Wonder why this gent can't identify the airport?
 
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zeke
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Re: Meaning of "/" on this Departure chart

Mon Apr 02, 2018 1:28 am

e38 wrote:
pikachu, my interpretation is the procedure requires GNSS OR RADAR.

e38


That is incorrect, this sort of procedure is applied at facilities where radar coverage is expected before the first RNAV course change, it allows for a greater number of aircraft to use the procedure. Being RNAV 1 there is no onboard performance monitoring required, radar provides that. RNP-1 will allow the procedure to be flown when SSR is off for maintenance or outside tower hours, it requires onboard monitoring and alerting.

Being GNSS equipped dos not mean they are RNP approved.
 
pikachu
Topic Author
Posts: 165
Joined: Thu Feb 07, 2002 5:58 pm

Re: Meaning of "/" on this Departure chart

Mon Apr 02, 2018 2:32 am

BravoOne wrote:
Wonder why this gent can't identify the airport?


The meaning of the "/" is not dependant upon a specific airport.
 
pikachu
Topic Author
Posts: 165
Joined: Thu Feb 07, 2002 5:58 pm

Re: Meaning of "/" on this Departure chart

Wed Apr 04, 2018 2:14 pm

Update courtesy of Jeppesen. The / means AND. Thanks for the input.
 
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zeke
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Re: Meaning of "/" on this Departure chart

Wed Apr 04, 2018 10:40 pm

Cheers, which country has that on their charts ?
 
stratclub
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Re: Meaning of "/" on this Departure chart

Thu Apr 05, 2018 6:21 am

zeke wrote:
Cheers, which country has that on their charts ?

Any country that has that RNAV requirement would imagine.
 
stratclub
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Joined: Fri Jan 05, 2018 10:38 pm

Re: Meaning of "/" on this Departure chart

Thu Apr 05, 2018 6:26 am

pikachu wrote:
Update courtesy of Jeppesen. The / means AND. Thanks for the input.

I went here: https://www.faa.gov/air_traffic/flight_ ... mplete.pdf and all though the slash isn't specifically defined it would appear it means and. If you have a choice, the word OR is used. I could not find a chart examples that used commas.
 
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zeke
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Joined: Thu Dec 14, 2006 1:42 pm

Re: Meaning of "/" on this Departure chart

Thu Apr 05, 2018 11:49 am

stratclub wrote:
Any country that has that RNAV requirement would imagine.


I normally see it presented differently like WSSS (Singapore) it says “1. Radar required. 2. GNSS required”

stratclub wrote:
I could not find a chart examples that used commas.


ZBAA (Beijing) SIDs have “GNSS, DME/DME/IRU” on them

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