FALA A-RNP Rwy25

[tansg]

The G1000/Cirrus Perspective with the latest software load (.34, IIRC) can fly RF RNP approaches. I've flown the RNP25 FALA in VMC (with the appropriate training, CAA sign-offs, etc. etc. etc.) and it behaves as you would expect.

Good to know. The A320 had software issues when the approach was flight tested but the A330 & B738 worked perfectly. Andrew did Airbus
ever sort out that issue?

[Andrew Smit]

Hi Gary. Yes we did. I can’t remeber exactly, but I think we changed an ‘at or above’ to an ‘at’ Alt Constraint. It was something simple like that. We had to do the same for the RNP-AR approaches into JFK 13L/R. It was just the way the software behaved. That is why a flight and sim check are so important.

[tansg]

Hi Gary. Yes we did. I can’t remeber exactly, but I think we changed an ‘at or above’ to an ‘at’ Alt Constraint. It was something simple like that. We had to do the same for the RNP-AR approaches into JFK 13L/R. It was just the way the software behaved. That is why a flight and sim check are so important.

Excellent! Was a world first for all involved and possibly the last hurrah of that period rapid change and development of equipment, procedures and operations we went through at that time in South Africa. Pretty sure the economic climate and other factors have effectively killed this sort of innovation and foresight for the foreseeable future. I think you and Gerrit are the only people still in SA who were involved in the project. Sad

[Hop Harrigan]

To come back to the possibility of an RNAV (GNSS) approach to Rwy 25 at FALA...if the area is space-constrained, would it not be possible to have a GNSS approach that is approachable only from the West, thus eliminating aircraft approaching from the East and getting in the way of Waterkloof or Swartkops?
Something like the ‘half’ a GNSS approach at FAGG?
Hop

[Trent772B]

To come back to the possibility of an RNAV (GNSS) approach to Rwy 25 at FALA...if the area is space-constrained, would it not be possible to have a GNSS approach that is approachable only from the West, thus eliminating aircraft approaching from the East and getting in the way of Waterkloof or Swartkops?
Something like the ‘half’ a GNSS approach at FAGG?
Hop

The minimum final approach segment length and associated protection areas are probably to large. This would have been the first option. A-RNP is an awesome solution though. Wish we had them in FAOR. Radar vectored ILS’s are for LVP’s and dinosaurs.

[tansg]

To come back to the possibility of an RNAV (GNSS) approach to Rwy 25 at FALA...if the area is space-constrained, would it not be possible to have a GNSS approach that is approachable only from the West, thus eliminating aircraft approaching from the East and getting in the way of Waterkloof or Swartkops?
Something like the ‘half’ a GNSS approach at FAGG?
Hop

The minimum final approach segment length and associated protection areas are probably to large. This would have been the first option. A-RNP is an awesome solution though. Wish we had them in FAOR. Radar vectored ILS’s are for LVP’s and dinosaurs.

Exackerly

[Trent772B]

Are there any other A-RNP approaches in the world? I can’t seem to find any.

[tansg]

Well done to ATNS my ip birthday wishes tneb on the CAA approval of the Advanced RNP Rwy 25 for Lanseria. This is one of the first A-RNP procedures published in the world. For those who don't know, an A-RNP procedur e looks like a RNP-AR (curved RF Leg segment), but doesn't require the complicated RNP-AR approval process. Procedure goes live on the 23 June ARINC cycle change over.

Glad to see my legacy lives on.

but doesn't require the complicated RNP-AR approval process. Procedure goes live on the 23 June ARINC cycle change over.

That is the beauty of A-RNP it gives you most of the benefits of RNP AR without all the admin hassle.