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Old 27th Feb 2002, 17:38   #1 (permalink)
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Post Trimble/FreeFlight 2101 GPS

Hi All,

Can anyone please tell me the major difference between the Trimble 2101 I/O and the Trimble 2101 I/O Approach Plus? Whilst I have operated both systems in the past I cant remember any major differences.

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Old 28th Feb 2002, 01:45   #2 (permalink)
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Roaming Cyclic

Not 100% sure as I've nit had to install one but I think the I/O approach plus is mainly Arinc 429 (digital)interfaces with the aircraft systems, for the more modern aircraft whereas the I/O are analogue interfaces (synchros etc)for the older retrofits. There may also be a channel number difference for the GPS (2/8/12 blah blah). . .Basically I think the differences are more noticeable for the installer rather than the operator.



PS Trimble have a website if you really want to know
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Old 28th Feb 2002, 07:51   #3 (permalink)
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The Trimble 2101 was designed for IFR approaches .. .I believe, but don't quote me on it that Transport Canada won't approve it for IFR approaches because of high work load during approaches ( us Canadians ain't that smart just Hockey Players ya know ).
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Old 28th Feb 2002, 12:19   #4 (permalink)
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The 2101 Approach Plus is a DZUS-mount flight management and navigation system for commercial and corporate aircraft operators. The system meets FAA TSO C-129 (A1) and European Basic Area Navigation (B-RNAV) certifications. The unit incorporates an ultra-high contrast display for maximum sunlight readability and continuously checks accuracy using Receiver Autonomous Integrity Monitoring (RAIM) and predicts RAIM conditions for approach. The Trimble 2101 Approach Plus can store up to 40 flight plans with 40 waypoints each, showing nearest airport, displaying minimum safe altitudes as well as many other features. The receiver incorporates Jeppesen's NavData card including airports, approaches, SIDS, STARS, VORs, NDBs, airspace boundaries and MEAs. The unit interfaces with CDI, flags and external annunciators and altitude inputs. When integrated to an optional air data computer, the receiver displays true air speed, density and press altitudes, calculates and displays winds aloft and applies current wind to ETE and ETA calculations.. . . .The 2101 I/O Plus is a DZUS-mount system for the corporate, helicopter and regional commuter aircraft operators and is certified to TSO C-129 (A1) and B-RNAV. The 2101 I/O is also certified for primary and remote oceanic navigation. In addition to all the features of the 2101 Approach Plus, the 2101 I/O Approach Plus interfaces to many other flight instruments to maximize the flexibility of the system, all within a single unit.

Is that enough?
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Old 2nd Mar 2002, 20:22   #5 (permalink)
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Safe flight have taken over sale and support of these units as well as the Terra range of Radar altimeters . I will post the contact phone number on Monday for anyone who is interested. They are offering trade up from the TNL2000 range as well.
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Old 5th Mar 2002, 08:06   #6 (permalink)
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I'm told that Trimble is exiting the flying machine business for other fields with bigger volumes and bigger bucks. They've entered a partnership with Caterpillar, to put GPS on all Cat rental equipment. They're also big in farm tractor GPS, again with huge volumes compared to aircraft.. .. .Sort of puts the aviation business into perspective.
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Old 20th Mar 2008, 04:42   #7 (permalink)
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Trimble 2101 manual needed

Anyone have a link to a downloadable pilots guide for the 2101? I have looked around on their site, but it is about as user friendly as their products.
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Old 20th Mar 2008, 05:20   #8 (permalink)
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I would not bother. All support stops soon and IFR database ends this year. Time to upgrade sorry.
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Old 20th Mar 2008, 07:30   #9 (permalink)
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That may be true, but that doesn't alter the fact that it is installed and I would like to learn to use it.
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Old 20th Mar 2008, 08:35   #10 (permalink)
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foggy tried to send pilots manual by pdf email to you but you have elected no e mails if you send email address by pm i will send to you

mine is the 2101 i/o pilots manual i have also inst manual but they are all big files

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Old 20th Mar 2008, 09:26   #11 (permalink)
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I've sent you a link by PM saves the email limitations we all sometimes suffer from.


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Old 28th Sep 2008, 19:31   #12 (permalink)
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Freeflight 2101 Aproach Plus GPS


Does anyone know if there is available some kind of training program for PC for the above mentioned GPS?

Thanks in advance,
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Old 29th Sep 2008, 00:41   #13 (permalink)
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One of the less than intuitive things about that GPS is the way you change initial points for an approach. At least it used to be very counter-intuitive, but they have changed the software.
Make sure you know how to change the instrument approach initial point for a given runway - not the easiest thing to remember.
PM me if you want some other info on the issues with this model of GPS.
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Old 30th Sep 2008, 02:21   #14 (permalink)
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You can download the pilot manual from ;
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Old 30th Sep 2008, 03:42   #15 (permalink)
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So when did it stop being a Trimble?
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Old 30th Sep 2008, 07:03   #16 (permalink)
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Trimble - Freeflight


To quote from a pdf presentation on the FreeFlight site relating to Trimble which was "absorbed" into FreeFlight.

2001: Sold Commercial, Business and Helicopter business
to FreeFlight Systems
The pdf is http://www.freeflightsystems.com/docs/SABIT60103.pdf

I don't know if the name changed then, but thats when the company changed hands.

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Old 30th Sep 2008, 09:17   #17 (permalink)

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Got the thing in 2 aircraft, and none of us like it. With the back up problems I'd like to rip the bloody thing out and start again.
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Old 30th Sep 2008, 19:13   #18 (permalink)
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I've used the 2101+ fairly extensively. As others have said, it's not the least bit intuitive. However, it is a fairly capable unit. If you'll be going back and forth between it and another nav system you have my condolences. But, if you'll be using it exclusively, with a few months practice I think you'll find yourself very comfortable with it in all conditions and won't even notice the poorly designed user interface.

Several years ago Trimble distributed a tutorial for the model 2000, which is very similar in operation to the 2101+. They included a rather nice interactive trainer which operates fairly well on older computers. However, I've seen it experience problems on some newer ones.

If you'd like to PM me perhaps we can attempt to figure out a way to get a copy to you.

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Old 30th Sep 2008, 20:44   #19 (permalink)
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Flying a GPS approach depends a lot on how much the company is prepared to pay for the right connections. For example a Bristow 332 wil give the GPS presentation on the HSI but the course to fly has to be set manually and the distance to go has to be read off the Trimble unit by the co-pilot. In China GPS approaches are not approved as yet but when they are Chinese 332s will already have automatic course setting and distance to go on the HSI. ie when you reach a turning point the Beam Bar rotates to the next course and the distance to go comes up on the HSI. Same Trimble, same HSI, just more interested greenies.
Sit back, plug in the Nav function and watch your instruments tell you how they are doing the approach for you.
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Old 17th Nov 2008, 19:00   #20 (permalink)
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Transferring User Waypoints into Trimble 2101

I have a list of waypoints in a GPX format file.
Anyone know a way to transfer those waypoints into a Trimble 2101 without having to enter each one manually?
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