Uns Fms

[prpjt]

What are the biggest differences between the UNS1-K and the UNS1-M? I understand one is memory limited. Will one do much more vs. the other?Thanks in advance.

 

[Dep676]

From what I can remember the K has the SID's and STAR's. The M doesn't have them, you have to load them in manually. I think that was the biggest difference.

 

[some_dude]

Big difference. A UNS-1K is actually a "real" UNS, and works like all the other UNS-1 units, except for the UNS-1M.

A UNS-1M will do most of what a real UNS will do (except SIDs and STARs for some reason), but the display is smaller and lower resolution, and thus cannot display as much information. It is much harder to use as well.

I believe the UNS-1M is much older than the 1K and other 1 series units. I've only seen UNS-1Ms in older turboprops and jets.

If you have a choice, the UNS-1K is the way to go.

What are the biggest differences between the UNS1-K and the UNS1-M? I understand one is memory limited. Will one do much more vs. the other?Thanks in advance.

 

[Rick1128]

Universal has replaced the K in their line-up with the L. Even more memory and better screen. The M is basicly a boat anchor. No SIDs or STARs. Be careful about manual entry as some of the new SIDs and STARs do not have fix names or coordinates on all the fixes.

 

[cvsfly]

We have a single UNS-1M in a 1996 BE-B200 with Collins EFIS -85 and FCS. Memory is limited. UNS-1M is not in production anymore. Not all non-precisions will be on the database and does not have SIDS and STARS. Auto-pilot will capture VNAV on available approaches (although not approved for VNAV minimums in our aircraft/operation) but will not capture a pre-programed enroute VNAV profile.

In regards to the new suffixs and AC 90-100, what is the appropriate code? The unit is GPS based with DME NAV inputs. We have been a /G. I haven't digested AC 90-100 yet and we have a service letter from Universal listing the units that conform to the new requirements. UNS-1M is not listed, but various -1K s are. For our purposes (non-RVSM) I'm trying to figure out if a /F will be an appropriate code or not. Anyone? When does a unit become a FMS vs a "Navigational Management System"? Is it when it is a multi-sensor unit is connected to a Flight Control System (i.e. auto-pilot/FD)? UNS-1M manual calls it a NMS. That term also shows up on our MEL as well as FMS. Which is it?

 

[LegacyDriver]

Everyone here has pretty well summed it up. I was always surprised the M had less capability than the K given its designation. Now I know why.

The K was really great. We them in the 140 and they were vastly superior to the Honeywell FMZ in many areas. I can't wait to see the new UNS-1.

 

[HawkerF/O]

We them in the 140 and they were vastly superior to the Honeywell FMZ in many areas. I can't wait to see the new UNS-1.

Please eloborate. I can't imagine a situation in which a UNS would be superior to Honeywell NZ2000(boxes).

 

[some_dude]

It's all what you are used to. I found that the FMZ in the Sovereign was more capable than the UNS, but (for me) more difficult to use.

I'm sure if I started with the FMZ or NZ2000 and then transitioned to the UNS, I would gripe about the UNS instead.

Please eloborate. I can't imagine a situation in which a UNS would be superior to Honeywell NZ2000(boxes).

 

[HawkerF/O]

I started with UNS 1Ms, then moved on to the NZ2K. I liked the UNS, but the NZs do so much more. If you can think of it, the NZs can do it. YOu might not know how to get it to do it, but it will do it if you just read the book or ask someone. I did like the "Sequence Next Leg" funciton of the 1Ms when departing EGE on the runway to the west, and the box as a whole was great. I liked having to input SIDS and STARS, as I check them anyways even if I didnt have to input them. With that said, the Honeywells make you think. You have to go in and pull the info out of it, but in doing that, you are really on top of what you are doing and getting great experience mastering the box. I can appreciate liking what you 1st learned on, but Honeywell really takes the cake over UNSs, though they are both good boxes. I hear Collins (pro line 4, continuims (SP?), and pro line 21) are even better. Who knows..........

It's all what you are used to. I found that the FMZ in the Sovereign was more capable than the UNS, but (for me) more difficult to use.

I'm sure if I started with the FMZ or NZ2000 and then transitioned to the UNS, I would gripe about the UNS instead.

 

[LegacyDriver]

Background...

Started on the FMZ in the 145 and did that for about 13 mos. Went to the 140 and the UNS. Hated it. Got used to it. Went back to FMZ and realized how nice UNS was. Went back to UNS. Was so happy... Now back to FMZ.

Off the top of my head, a few things on the UNS that I prefer are:

1) FLPLAN Info - The FLPLAN page shows more waypoints (five or seven) than the FMZ (three). Better situational awareness for my money.

2) Performance Page - Gives the winds, fuel flow, etc. etc. On a single page with updates every second. The honeywell shows this info spread across five pages and many button presses.

3) VNAV - VNAV on UNS gives an exact readout on crossings including: exact descent rate, descent angle, deviation in feet above/below slope, and all targeted info. You can program the UNS to give you a slope or a rate after querying it... So, if I want to know what a 1500 fpm rate is it will give me the slope and vice versa...etc. etc... It gives you a constant target rate, updated every second, to meet your crossing. (I do all of this in my head any way but it is a nice backup.). The FMZ only gives you a pink VNAV arrow on the P1000 and you have to guess what it takes to bring you back to the slope (or calculate mentally with no backup--the difference between a sword and a scalpel).

4) WX - The ACARS on the UNS is much easier than the FMZ system. Way fewer buttons to press and easier to read IMHO.

I have minor quibbles with the UNS and would love to combine it with the FMZ to come up with the ultimate fms but prefer the UNS over the FMZ.

The VNAV alone is light years ahead of the FMZ's for my aircraft.

 

[LegacyDriver]

UNS-1M suck BTW. UNS-1K is what I like on the UNS side.

 

[HawkerF/O]

Response Below......

Background...

Started on the FMZ in the 145 and did that for about 13 mos. Went to the 140 and the UNS. Hated it. Got used to it. Went back to FMZ and realized how nice UNS was. Went back to UNS. Was so happy... Now back to FMZ.

Off the top of my head, a few things on the UNS that I prefer are:

1) FLPLAN Info - The FLPLAN page shows more waypoints (five or seven) than the FMZ (three). Better situational awareness for my money.

OK. That's more of a user preference than performance, but to each his own. I liked the 3 waypoint because the writing was much larger and not cluttered, so you could just glance down and know what was going on.

2) Performance Page - Gives the winds, fuel flow, etc. etc. On a single page with updates every second. The honeywell shows this info spread across five pages and many button presses.

Can't argue with you there.

3) VNAV - VNAV on UNS gives an exact readout on crossings including: exact descent rate, descent angle, deviation in feet above/below slope, and all targeted info. You can program the UNS to give you a slope or a rate after querying it... So, if I want to know what a 1500 fpm rate is it will give me the slope and vice versa...etc. etc... It gives you a constant target rate, updated every second, to meet your crossing. (I do all of this in my head any way but it is a nice backup.). The FMZ only gives you a pink VNAV arrow on the P1000 and you have to guess what it takes to bring you back to the slope (or calculate mentally with no backup--the difference between a sword and a scalpel).

Press 'Direct To' then line select the RH side of the way point and watch the magic begin! It'll put the put you right back on. the NZs give you constant rate as well, but pilots forget and get tripped up when their speed changes. If you are not going through 10K, you really have to pay attention to the speed. Multiply your GS by 5 or divide it by 2 and add a 0 and you'll hit it every time. With the UNS, you had to leave the box on the VNAV page in order to see it. Has that changed? Does the UNS put someone on your ADI so you can see what you have to do or do you have to keep looking at the box? I liked the pink/magenta dot on the NZs that told you where you needed to be. It was no different than flying a Glide Slope on an ILS.

4) WX - The ACARS on the UNS is much easier than the FMZ system. Way fewer buttons to press and easier to read IMHO.

Not famaliar at all with ACARS on the WX side of either box.

I have minor quibbles with the UNS and would love to combine it with the FMZ to come up with the ultimate fms but prefer the UNS over the FMZ.

The VNAV alone is light years ahead of the FMZ's for my aircraft.
Can you couple the VNAV to the A/P with the UNS? Can you set up a ILS to any runway in the database on the UNSs like you can on the NZs?

 

[some_dude]

HawkerFO, if you've only used a UNS-1M then you have no idea what it is like to use any other UNS-1.

I agree, the FMZ is far superior to the UNS-1M. However, when I said I preferred the UNS to the FMZ, I was not thinking of the 1M. I apologize for not being clear about that.

Incidentally, in the Commander 1000, I can couple the autopilot to the UNS-1M VNAV, for whatever that's worth.

To add to Legacy Driver's comments, I prefer the NAV page on the UNS (not the 1M!)-- I like how it is logically laid out for doing position reports.

 

[LegacyDriver]

I am aware of the direct to function for vnav on the fmz. The uns has the same feature.

However, the uns provides much more fidelity for vertical path control.

For example, if my ground speed decreases and I descend below my target vnav path the uns gives me a new target vertical speed (updated every second) that will get me to my crossing. It has the fidelity down to a foot per minute so it may show my original 3.0 slope as 1700 fpm.... As I drift below the target it starts saying: 1690...1678...1650...1640...1632... So I can adjust my vertical speed to that new target and will make my crossing. I get this in addition to the pink vnav arrow...IIRC.

The fidelity of the thing is beautiful for vnavs and gives you great info...

Haven't flown it in awhile but miss it all the same.

It also gave me more info in the waypoint query page than the fmz (full airport and vor names including freqs). I liked it a lot.

Uns-1M sux...flew it on Citations and hated it. But like the K. Fmz is okay but not as much info there...

 

[Jetman737BBJ]

The 1M is a classic, you will find it in older model King Air 200 and 350's. The -k model is a much larger unit, enables STARS/SID load ups and V-NAV descents.
There is no comparison the K is definitely superior over an M.

But if you really want the bells and whistles, get the UNS-1L, I have it in a Citation and you can LNAV approaches with it. It is 5 times faster than the -K unit on power up and disk loads.

 

[prpjt]

Thanks for the info guys. Looks like we'll be getting a plane with the 'K'. The nav sysytem wasn't the deciding factor but it did weigh into the choice.Wish we could sport for the UNS1-L and Pro Line 21, but not this time.

I've flown the UNS C+ and the gns units. Someone told me the M didn't have SID/STAR info and I just couldn't believe it. But it is so.