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Page 3-2 G3X Installation Manual – GMU 44
Revision A 190-01115-01
3.3 Environmental Specifications
Table 3-2 lists general environmental specifications.
Table 3-2. GMU 44 Environmental Specifications
Specification Characteristic
Regulatory Compliance RTCA/DO-160D Environmental Conditions and
EUROCAE/ED-14D
Unit Software RTCA/DO-178B Level B
Operating Temperature
Range
-55° C to +70° C
Altitude 55,000 Feet
3.4 GMU 44 TSO/ETSO Compliance
Table 3-3. TSO/ETSO Compliance
Function
TSO/ETSO/SAE/
RTCA/EUROCAE
Category
Applicable LRU
SW Part
Numbers
Applicable
Custom Logic
Device Part
Numbers
Direction Instrument,
Magnetic (Gyroscopically
Stabilized)
TSO-C6d
ETSO-C6d
AS8013A
All
006-B0224-(__)
except
006-B0224-Z(_)
All
006-C0048-0(_)
3.4.1 TSO/ETSO Deviations
The following table provides a list of applicable TSO and SAE deviations for the GMU 44.
Table 3-4. TSO/ETSO Deviations
TSO Deviation
1. Garmin was granted a deviation from TSO-C6d to use RTCA DO-160D instead of RTCA
DO-160B as the standard for Environmental Conditions and Test Procedures for Airborne
Equipment.
2. Garmin was granted a deviation from TSO-C6d to use RTCA DO-178B instead of RTCA
DO-178A to demonstrate compliance for the verification and validation of the computer
software.
3. Garmin was granted a deviation from TSO-C6d to use SAE AS 8013A instead of SAE
AS 8013 as the Minimum Performance Standard.
4. Garmin was granted a deviation from TSO-C6d to list this secondary TSO in the
Installation 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 the
Installation Manual rather than on the article itself.
1. Garmin was granted a deviation from ETSO-C6d to use RTCA DO-160D instead of SAE
AS 8013 as the standard for Environmental Conditions and Test Procedures for Airborne
Equipment.
ETSO-C6d
(GMU 44)
2. Garmin was granted a deviation from ETSO-C6d to use SAE AS 8013A instead of SAE
AS 8013 as the Minimum Performance Standard.