G1000 Nav III Line Maintenance Manual
Page 6-1
190-00352-00
Rev. L
6
PERIODIC MAINTENANCE
6.1
Introduction
No component-level maintenance is required. Maintenance of the G1000 LRUs is ‘on condition
only’, except for the following maintenance instructions and checks.
NOTE
Per Garmin Service Advisory 0606, prior to the start of a pitot static test allow the GDC 74A to
operate at least 15 minutes.
1.
Pitot/Static Leak Test
Perform a pitot/static leak test as described in Title 14 CFR §§ 91.411 and Part 43 Appendix E.
2.
Altimeter (GDC 74A & PFD)
Per Part 43 Appendix E, paragraph (b)(2), Garmin specifies a test procedure equivalent to Part 43
Appendix E, paragraph (b)(1) with two exceptions. The tests of sub-paragraphs (iv) (Friction) and (vi)
Barometric Scale Error) are not applicable because the digital outputs of the GDC 74(X) are not
susceptible to these types of errors.
3.
Airspeed Function Test (GDC 74A & PFD)
Check for correct indication.
4.
Vertical Speed Indicator (GDC 74A & PFD)
Check for correct indication.
5.
GTX 33 Mode S Transponder
Test according to Title 14 CFR §§ 91.411 and 91.413 as well as Part 43 Appendix F.
6.
GRS 77 Earth Magnetic Field Updates
The GRS 77 utilizes an Earth magnetic field model, which is updated once every five years. The update
is expected to be available from Garmin by July 1 of each of the following years: 2005, 2010, 2015, and
every five years thereafter, so long as the GRS 77 remains a Garmin-supported product. Otherwise
maintenance of the GRS 77 is ‘on condition’ only.
7.
GSA 81 Servos
Conduct a visual inspection every 1000 hours or every annual, refer to Section 6.2.
Clean and apply grease to output gear every 1000 hours or 3 years, refer to Section 6.3.
8.
GSM 85 Servo Mount
Conduct a visual inspection and check slip clutches once a year (refer to Section 6.4).
Summary of Contents for G1000 NAV III
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