G900X/G950 Installation and Maintenance Manual – PICP & Warranty Registration
Page C-35
190-00719-00
Revision D
C.2.13 GDC 74A Testing
NOTE
Allow the unit to warm up for 15 minutes before performing the following tests.
Verification of the altimeter and airspeed must be performed using an air data test set (ADTS). The static
port and altimeter must be verified in accordance with Title 14 of the Code of Federal Regulations (CFR)
§ 91.411 and Part 43 Appendix E. The PFD must be in Configuration mode and the MFD must be in
Reversionary mode for performing the tests as outlined in Part 43 Appendix E.
To prepare the G900X System for Part 43 Appendix E testing:
1.
Start the G900X system in normal mode.
2.
Remove power to the PFD.
3.
Turn the PFD on in Configuration mode by pressing and holding the ENT key on the PFD while
applying power.
4.
Release the ENT key after “INITIALIZING SYSTEM” appears in the upper left corner of the
PFD.
NOTE
Configuration mode contains certain pages and settings that are critical to aircraft
operation and safety. These pages are protected and cannot be modified, unless the
technician is properly authorized and equipped. However, most protected pages are
viewable to allow system awareness for troubleshooting.
5.
Using the FMS knob on the PFD turn to the GRS page group. Use the B ALT field for all CFR
Part 43 Appendix E tests for G900X altitude.
6.
Place the MFD in Reversionary mode by pressing the red “display backup” button on the
GMA 1347 Audio Panel. Baro settings can then be read from the MFD for the CFR Part 43
Appendix E tests.
After completing the tests specified by § 91.411 and Part 43 Appendix E, return both the MFD and PFD
to normal mode.
NOTE
The following tests are above and beyond the requirements set forth in Appendix E.
