We're thinking of buying one as our first "glide computer" (no space in panel). Anyone have one and could give a review? Not much written about it yet by any users...Thanks! Kristin

Tuesday, February 14, 2017 at 2:16:05 AM UTC-5, wrote:
I am pleased to announce IGC-approval for the LXNAV Nano 4 Flight Recorder
from LXNAV of Celje, Slovenia, for "all flights" including world records.

This is a small stand-alone recorder with a screen, and sensors for engine operation using both low and high frequency noise.

The low frequency sensor has peak sensitivity at about 150 Hz and records under the ENL code.

The high frequency sensor has peak sensitivity at about 8KHz, records under the MOP code and is for use with small jet engines.

Three numbers under each code are part of in each fix in the IGC file.

The IGC-approval document may be downloaded either from the FAI/IGC web site or the GFAC web site, see below.

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There are now 58 different types of IGC-approved Flight Recorders from 20 different manufacturers.

If you own or fly with one of these recorders, it is recommended that you download its latest IGC-approval document from one of the web sites given below, and note any changes that may affect how you operate it.

A table of all IGC-approved FRs with links to Approval Documents is on the GFAC web site:

www.ukiws.demon.co.uk/GFAC

The table can be viewed directly at:

www.ukiws.demon.co.uk/GFAC/igc_approved_frs.pdf

This document includes the following:

(1) a table of all types of IGC-approved Flight Recorders in alphabetical order of manufacturer name, with links to their IGC-approval documents in the right hand column under "Date of Latest Document".

(2) a table of Manufacturers of IGC-approved Flight Recorders, in alphabetical order of name.

(3) a diary of all IGC-approval activity from the first IGC-approvals in 1996 to the present day, most recent events first.

(4) a history of GNSS Flight Recording in IGC together with pictures of some early Recorders.

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Navigating the IGC web site:

go to: www.fai.org/igc-documents

Scroll down and click "Flight Recorders",

look down and click on: "IGC-approved Flight Recorders - Approval Documents"

then click on "IGC-approval Documents for all IGC-approved Flight Recorders"

This will call up a list of documents, the first one being "All IGC-approved FRs - table, links to approval documents, general information and history"

This table lists the name and main characteristics of individual IGC-approvals and in the last column of this table there is a link to individual documents, click the link for the document to be called up

The table is followed by a list of individual IGC-approval documents in alphabetical order of manufacturer’s name from Aircotec to Zander.
These can be called up by clicking on the document name.

A box will appear at the bottom of the screen with what has been downloaded, click on "Open" to view the document, which will also have been saved in your Downloads folder.

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IGC-approval follows test and evaluation by the IGC GNSS Flight Recorder Approval Committee (GFAC) in accordance with Annex B to the Sporting Code for gliding and the Technical Specification for IGC-approved GNSS Flight Recorders.

The Technical Specification is available through the igc-documents web site above

or

directly from the GFAC web site:
http://www.ukiws.demon.co.uk/GFAC/do..._spec_gnss.pdf

Programs that have been notified to IGC for the analysis of IGC files are listed at:
www.ukiws.demon.co.uk/GFAC/documents/analysis programs for igc flight data files.pdf

The IGC Shell program for Validation of the structure of IGC files may be downloaded he

www.ukiws.demon.co.uk/GFAC/downloads.htm

This downloads the file IGCDLL.zip, which when un-zipped, gives the free IGC Shell program. This web site also contains the latest FR Manufacturers’ Data Link Library (DLL) files that are used by IGC Shell and other programs to Validate the structure of an IGC file. The IGC file Validate check ensures that the IGC file came from a serviceable and secure FR, and the file is identical to when it was originally downloaded. This check is required before a flight performance recorded in the IGC file can be approved to the standards of IGC.

Finally, the Sporting Code for gliding (SC3) and its annexes A-D may be downloaded at: www.fai.org/igc-documents

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Ian Strachan
Chairman, IGC GNSS Flight Recorder Approval Committee (GFAC)

www.ukiws.demon.co.uk/GFAC