Collins GPS 4000 unit.
-
Hi Nick!
Could you tell me if the simulated GPS unit we have in the Starship is the Collins GPS 4000, 4000A or 4000S?
Thanks!
Alan / From Brazil.
-
I don't think it's a 4000. And it's definitely not gps. (there is a gns 430 in the center console). I believe it's a CDU-850A
-
I don't think it's a 4000. And it's definitely not gps. (there is a gns 430 in the center console). I believe it's a CDU-850A
From what I’ve seen, it is a Collins GPS unit (though I'm not sure which specific type). In the FMS, we have an option to enable GNSS/WAAS. I did some research and found that only the Collins GPS 4000S units allow for RNAV LPV approaches. My question is: did any Starship unit at some point receive this 4000S unit as an upgrade, or were they all originally equipped with the basic 4000 model?
In other words, does our Black Square Starship FMS offer the GNSS/WAAS option because it actually simulates a 4000S unit (based on a real-world Starship example), or is it just a convenience feature (assuming that, hypothetically, all real units were equipped with the basic 4000 model)?
Best regards!
Alan / From Brazil.
-
I've gone digging around a couple times since you posted this, but I can't find the exact model. To answer your most recent questions, yes, all Starships today are equipped with a WAAS capable GPS source, and I have simulated it with all of the relevant CDU screen as configured in the Starship I had access to.
-
I've gone digging around a couple times since you posted this, but I can't find the exact model. To answer your most recent questions, yes, all Starships today are equipped with a WAAS capable GPS source, and I have simulated it with all of the relevant CDU screen as configured in the Starship I had access to.
@Black-Square Hi Nick! Are RNAV LNAV/VNAV approaches exclusive to the GNS 430? When you mentioned the WAAS-capable GPS source, were you referring to the GNS 430, or the AMS-850 FMS paired with the Collins GPS 4000(S)?
-
@Black-Square Hi Nick! Are RNAV LNAV/VNAV approaches exclusive to the GNS 430? When you mentioned the WAAS-capable GPS source, were you referring to the GNS 430, or the AMS-850 FMS paired with the Collins GPS 4000(S)?
@alanfernandes The FMS is paired with some Collins GPS LRU, though I don't know which one. The technical/legal capabilities of the modern Starship system has been discussed many times on this forum if you do a little searching. Since all of my knowledge is US-centric, there are others with broader knowledge who have weighed in on the specifics, beyond the system being LNAV (no VNAV) capable and legal.
-
@alanfernandes The FMS is paired with some Collins GPS LRU, though I don't know which one. The technical/legal capabilities of the modern Starship system has been discussed many times on this forum if you do a little searching. Since all of my knowledge is US-centric, there are others with broader knowledge who have weighed in on the specifics, beyond the system being LNAV (no VNAV) capable and legal.
@Black-Square Got it, that makes perfect sense. I’ve been following some discussions about this here, so I gather that the FMS is limited to LNAV-only approaches, and for higher-precision ones like LPV, the GNS 430 is the way to go. I was under the impression that having the 4000S unit and the GNSS/WAAS mode enabled would allow the FMS to handle LPV approaches as well. Thanks for the clarification and the support!
Alan / From Brazil.
-
From my understanding the GNS430 adds WAAS class 2 for LPV capability. I am fairly certain the AMS-850 is TSO-C129 class RNAV so LNAV only. It does have RAIM, but no FDE so it is definitely a secondary navigation source, but it does meet requirements for IFR certification in USA and Canada.
-
From my understanding the GNS430 adds WAAS class 2 for LPV capability. I am fairly certain the AMS-850 is TSO-C129 class RNAV so LNAV only. It does have RAIM, but no FDE so it is definitely a secondary navigation source, but it does meet requirements for IFR certification in USA and Canada.
@SadBucket Would you happen to know if any Starship airframes were ever equipped with dual Collins GPS 4000 LRUs?
