Page 3-2 G3X Installation Manual – GMU 44Revision E 190-01115-013.3 Environmental SpecificationsTable 3-2 lists general environmental specifications.Table 3-2. GMU 44 Environmental SpecificationsSpecification CharacteristicRegulatory Compliance RTCA/DO-160D Environmental Conditions andEUROCAE/ED-14DUnit Software RTCA/DO-178B Level BOperating TemperatureRange -55° C to +70° CAltitude 55,000 Feet3.4 GMU 44 TSO/ETSO ComplianceTable 3-3. TSO/ETSO ComplianceFunction TSO/ETSO/SAE/RTCA/EUROCAE CategoryApplicable LRUSW PartNumbersApplicableCustom LogicDevice PartNumbersDirection Instrument,Magnetic (GyroscopicallyStabilized)TSO-C6dETSO-C6dAS8013AAll006-B0224-(__)except006-B0224-Z(_)All006-C0048-0(_)3.4.1 TSO/ETSO DeviationsThe following table provides a list of applicable TSO and SAE deviations for the GMU 44.Table 3-4. TSO/ETSO DeviationsTSO Deviation1. Garmin was granted a deviation from TSO-C6d to use RTCA DO-160D instead of RTCADO-160B as the standard for Environmental Conditions and Test Procedures for AirborneEquipment.2. Garmin was granted a deviation from TSO-C6d to use RTCA DO-178B instead of RTCADO-178A to demonstrate compliance for the verification and validation of the computersoftware.3. Garmin was granted a deviation from TSO-C6d to use SAE AS 8013A instead of SAEAS 8013 as the Minimum Performance Standard.4. Garmin was granted a deviation from TSO-C6d to list this secondary TSO in theInstallation Manual rather than on the article itself.TSO-C6d(GMU 44)5. Garmin was granted a deviation from TSO-C6d to list the DO-178B software level in theInstallation Manual rather than on the article itself.1. Garmin was granted a deviation from ETSO-C6d to use RTCA DO-160D instead of SAEAS 8013 as the standard for Environmental Conditions and Test Procedures for AirborneEquipment.ETSO-C6d(GMU 44)2. Garmin was granted a deviation from ETSO-C6d to use SAE AS 8013A instead of SAEAS 8013 as the Minimum Performance Standard.