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Microkit

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  1. Thank you for the feedback, Will. One note to keep in mind to all; whenever the airplane comes out of annual or any wiring/panel related maintenance; make sure you test the Gear Warning System again, the best test is to do a low-approach with the gear up, then perform a go-around, the unit announces “Check Landing Gear” every 4 seconds until a positive rate of climb is registered, or the gear is extended. We did get a report from a pilot who handed over his airplane for a GPS/EFIS upgrade, the shop temporarily removed part of the panel along with some wiring to assist with their installation and when they put it back together, they ended up connecting the GWS wire to a permanent +VE source; unaware of its functionality or why it was there in the first place; this effectively made the LHS unit sees the gear as always down. He only found out about it when he wanted to demonstrate the GWS feature to another pilot, so we asked him to troubleshoot the location of the GWS wire after he told us the airplane just got a huge panel upgrade. Apparently; system failures and issues after maintenance is a hot topic at the moment. It is a good idea to have an “After Maintenance checklist” with first flight to be around the pattern and check all critical systems such as the Gear Warning System, autopilots and such.
  2. No practical or safety reason at all, hence the limitation is only mentioned in the installation guide rather than the approval letter/certification itself. We are the first one to use LIDAR technology instead of Radar Altimeter for height callout during landing, and its on NORSEE rather than STC, allowing us to offer it at a much cheaper price point compared to other STC equipment.
  3. The LHS unit is shipped with the default settings to allow 2 & 1 to be announced. Some installers go on the LHS unit WiFi pages and click on the button, so 2 & 1 are not announced. We are aware that some users go back into the LHS menu (details available within the online guide) and disable that mode, so they can hear 2 & 1. I guess they are reading between the lines. Here is a 3 years old (Nov 2020) reply on the same question with more info. https://mooneyspace.com/topic/36596-landing-height-system-for-mooney/?do=findComment&comment=627163
  4. Some newer GPS may have an AGL output message based on their internal terrain database and current location; we don't think it will be in the Aviation Output message itself, but rather a new message format. Sorry Jim, unfortunately there are no coupon codes at this time.
  5. The GPS callouts are MSL, this is because the GPS sends as MSL in the Aviation Output message. As mentioned previously, the main objective of having a GPS feed is the speed threshold. The extra 4 announcements that are based on GPS altitude are really a by-product, and there is a dedicated option within the WiFi setup of the unit to mute these 4 callouts. The main function of the LHS unit is laser-based AGL starting 200’, then of course the added value of the audio based Gear Warning System
  6. Don, I sent you an email with a firmware update to check out the NMEA 0183 option for the 200-C model. Anyone else in need of this firmware, please do email us (let us know if it's 200-B or 200-C model), we will probably keep it in Beta until we get confirmation from more than one pilot that NMEA is working at their end.
  7. It is scheduled before the middle of March. I will email you a firmware update to check it out soon.
  8. Your field elevation seems to be right at the border of the +/-150, and it's not exactly 2000 ft. LHS repeats callout based on whatever is coming from the RS232. You can see the data coming if you open the GPS Setup page and watch at the bottom (when the GPS has a fix). There is an option within the LHS configuration to only announce 50 ft and below and not announce height. The default is to announce 200 ft AGL and below, this is called Standard in the drop-down list. If you only get 50 ft and below, that's what it is set to. LHS does not call gear down. It only calls Check Landing Gear and keeps repeating it if it sees the ground below and the gear is up. We recommend everyone to do the test flight we presented here (see Page 17 on this thread) right after installation to confirm the Gear Warning System is operational. It is also recommended to perform this test flight after each annual or panel work, a customer discovered the Gear Warning System wire was removed during an annual.
  9. The deviation is probably set to +/- 50 ft (default) in the GPS Setup page within the LHS unit. Set it to +/- 150 ft. When you deviate 50 ft and come back it will announce again. Try it with +/- 150 ft, and you can also disable GPS callouts while taking advantage of the Speed threshold for IMC operations. We may release a firmware upgrade that allows selecting certain ones, and add more GPS callouts (4000, 5000, 6000). Also, it depends on how your GPS is reporting it to the LHS. Some GPS models report only in 50 ft increments, others report the lowest of nearest 100, (in 100 ft increments), others in 1’s and so on.
  10. VBox on a Mooney. YT Audio during the flight was actually taken from the VBox as he forgot his GoPro!
  11. To clarify, we are talking about the GPS feed feature of the LHS. Late last year we introduced an upgraded edition of the LHS-100-B to the 200-C which adds two more features, a GPS feed from external GPS source, and a proper physical check Gear Warning System. The chat above is regarding the GPS side of the LHS. There are no changes on the AGL (laser based) side of the LHS, this is still the same. The optional GPS feed provides 4 additional callout (MSL), which can be disabled from the LHS GPS Setup page. 200 ft and below, the system is laser based. Higher callouts are GPS based.
  12. @dfurst It's what ever your GPS reports, some GPS can report Above Terrain Altitude based on the internal terrain database, most are MSL. For sure not useful in high elevation airports, again it is just a byproduct of the Speed. We will consider adding more callouts in the future.
  13. @jlunseth The GPS deviation (in the LHS GPS settings) is probably set to +/- 50 ft. Put it to +/- 150 ft. The LHS keeps announcing the 500,1000,2000,3000 if you deviate and come back. If you hand fly the airplane, you either deviating to 51 ft and back 1 ft (to reach 50) or your GPS model is reporting in 100's and not in 1's with some models reports the lower alt (-100) even if you go down 10 ft as a safe buffer. So depending on the GPS itself, some will report 2900 when you are in fact 2990, and report 3000 when 3000 to 3090 and so on. A note in the manual to "know your GPS". Though setting it to +/- 150 ft. should solve it for those who hand fly. The main advantage of the GPS is the speed threshold which solves the IMC operations technology limitation. The extra 4 callouts are just a by-product of connecting to a GPS source. You can keep the speed, and mute the 4 callouts from the GPS setup within the LHS. Thanks
  14. @Larry, We did an install on M20J on left wing, access panel behind the gear well. Remove pilot seat, remove pilot side panel to expose the wiring already there, remove the bottom two big panels to make it easier. Get plastic tubing similar to the ones used for Pitot/Static, slightly larger dia though, pass the tubing starting from the pilot side, then through the back and there is an opening in the wing to get to that access panel, use a fish tape or even a solid core wire to pull all wires through the plastic tubing. Once you actually have all panels out, you will be able to locate the opening the wing to that access panel aft of the gear well.
  15. @rbp I thought I replied to this, not sure why it did not show up on my end. Check WiFi pages to see if GPS and/or Gear Warning System are active/enabled. Even within the LHS GPS Setup page, there is an option to mute the callouts so maybe it was set up but muted. Nothing muted below set speed (if used), if not setup (speed set to 0 or GPS feed is disabled), system works as usual.
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