G900X/G950 Installation and Maintenance Manual – GDU 1040
Page 2-11
190-00719-00
Revision D
TSO/ETSO Deviations, continued
TSO/ETSO Deviation
1. Garmin was granted a deviation from TSO-C41d to use RTCA DO-178B instead of RTCA DO-
178 to demonstrate compliance for the verification and validation of the computer software.
TSO-C41d
2. Garmin was granted a deviation from TSO-C41d to use RTCA DO-160D instead of RTCA DO-
160B as the standard for Environmental Conditions and Test Procedures for Airborne Equipment.
1. Garmin was granted a deviation from TSO-C43c to use RTCA DO-160D instead of
RTCA DO-160C as the standard for Environmental Conditions and Test Procedures for Airborne
Equipment.
TSO-C43c
2. Garmin was granted a deviation from TSO-C43c to use SAE AS 8005A instead of SAE AS 8005
as the Minimum Performance Standard
ETSO-C43c
1. Garmin was granted a deviation from ETSO-C43c to use SAE AS 8005A instead of SAE AS
8005 as the Minimum Performance Standard.
1. Garmin was granted a deviation from TSO-C44b section a.3 to use DO-160D for the
Environmental Standard.
2. Garmin was granted a deviation from TSO-C44b section b.1 to not display the software part
number on the outside of the unit.
3. Garmin was granted a deviation from TSO-C44b to use SAE AS 407C instead of SAE AS 407B
to demonstrate compliance for Fuel Flowmeters.
4. Garmin was granted a deviation from TSO-C44b to modify the requirement 4.2.5 in SAE AS
407C
5. Garmin was granted a deviation from TSO-C44b to modify the requirement 4.1.1 in SAE AS
407C
TSO-C44b
6. Garmin was granted a deviation from TSO-C44b (SAE AS 407C section 4.2.3) for the GDU 104X
Series to use analog scales that have graduations that exceed 10% of full scale value when the
analog scale is accompanied by a digital readout.
1. Garmin was granted a deviation from ETSO-C44b to use RTCA DO-160D instead of SAE AS
407B as the standard for Environmental Conditions and Test Procedures for Airborne Equipment.
2. Garmin was granted a deviation from ETSO-C44b to use SAE AS 407C instead of SAE AS 407B
to demonstrate compliance for Fuel Flowmeters.
3. Garmin was granted a deviation from ETSO-C44b to modify the requirement 4.2.5 in SAE AS
407C
ETSO-C44b
4. Garmin was granted a deviation from ETSO-C44b to modify the requirement 4.1.1 in SAE AS
407C
1. Garmin was granted a deviation from TSO-45a to use RTCA DO-160D instead of RTCA DO-
160C as the standard for Environmental Conditions and Test Procedures for Airborne Equipment.
2. Garmin was granted a deviation from TSO-45a SAE 8042 3.10.5 to use MAN as abbreviation
instead of MANIFOLD PRESSURE or MANIF PRESS.
TSO-C45a
3. Garmin was granted a deviation from TSO-C45a to modify the requirement 3.10.9 in
SAE AS 8042
1. Garmin was granted a deviation from ETSO-C45a to use RTCA DO-160D instead of SAE AS
411 as the standard for Environmental Conditions and Test Procedures for Airborne Equipment.
2. Garmin was granted a deviation from ETSO-C45a to use SAE AS 8042 instead of SAE AS 411
for Minimum Performance Standards.
3. Garmin was granted a deviation from ETSO-C45a SAE 8042 3.10.5 to use MAN as abbreviation
instead of MANIFOLD PRESSURE or MANIF PRESS.
ETSO-C45a
4. Garmin was granted a deviation from ETSO-C45a to modify the requirement 3.10.9 in SAE AS
8042
