Page 1-12 500W Series Installation ManualRev. D 190-00357-021.6 Regulatory Compliance1.6.1 TSO and Advisory Circular ReferencesThe conditions and tests required for TSO approval of this article are minimum performance standards.It is the responsibility of those installing this article either on or within a specific type or class of aircraftto determine that the aircraft installation conditions are within the TSO standards. TSO articles musthave separate approval for installation in an aircraft. The article may be installed only in compliancewith 14 CFR part 43 or the applicable airworthiness requirements.For aircraft on the AML for the 400W/500W Series STC SA01933LA, the TSO design approval hasbeen determined to be adequate by the STC, which constitutes the separate installation design approval.Table 1-4. TSO AuthorizationFunction TSO Minimum PerformanceStandardSoftwareRTCA/DO-178BTSO-C37d, Transmitter, 100nm range RTCA/DO-186A,Class 4 & 6Class 3 & 5 for “A” modelsCOMTSO-C38d, Receiver RTCA/DO-186A,Class C & ELevel C, D [1]VOR/ILSTSO-C34e, GlideslopeTSO-C36e, LocalizerTSO-C40c, VHF Omni RangeRTCA/DO-192RTCA/DO-195RTCA/DO-196Level CGPS/WAAS TSO-C146a, GPS/WAAS RTCA/DO-229C, Class 3 Level BMFD TSO-C113, Display SAE AS 8034 Level B,C,DTAWS TSO-C151b, TAWS Class B Level C[1] Version 2.XX main software uses Level D software for the COM tuning function. All other COMfunctions are Level C. In later versions of the main software, the software level for the COM tuningfunction is Level C.• AC 20-67B, Airborne VHF Communications Equipment Installations• AC43.13-1B, Acceptable Methods, Techniques and Practices - Aircraft Inspection and Repair• AC43.13-2A, Acceptable Methods, Techniques and Practices - Aircraft AlterationsSystem Function DO-178B LevelOperating System BGPS Navigation Information BVOR Information CLOC/Glideslope Information CVHF Communication CTAWS (Class B) Functionality CDisplay of altitude, heading, course, speed, and track CDisplay of other information - moving map, terrain, flight plan overlay and flight mode,TAS/TIS traffic information, XM Weather data, data from passive lightning detectionequipment, checklist and timerDTerrain DNOTEUnauthorized changes or modifications to any 500W Series unit product may void thecompliance to required regulations and authorization for continued equipment usage. All500W Series unit functions are design approved under the TSO. Airworthiness approvalfor installation and operational use is recognized under AML STC SA01933LA. Ifadditional information (drawing lists and software documentation) is required tosubstantiate aircraft installation or operational approval, contact Garmin CustomerSupport for assistance. Garmin does not provide design or certification documentation,including software data, other than to certification authorities.