190-00734-11
GTX 33X and GTX 3X5 ADS-B Maintenance Manual
Rev. 6
Page 4-4
4.5 Visual Inspection
Perform a visual inspection in accordance with requirements in this section. Check for corrosion, damage,
or other defects for each of the installed items. Replace any damaged parts as required. Inspection may
require the temporary removal of a unit or units to gain access to connectors. Follow guidance in section 6
for equipment removal and replacement. Refer to appendix A of this manual for equipment locations.
Refer to the specific Aircraft Maintenance Manual for instructions on removing any access panels.
GTX 330/330D/335/345 Visual Inspection
During normal aircraft inspections not to exceed 12 calendar month intervals, conduct a visual inspection
of the GTX 330/330D/335/345 installation in the following locations.
Instrument Panel
1. Inspect all GTX 330/330D/335/345 keys for legibility of labels and markings.
2. Inspect GTX 330/330D/335/345 units for security of attachment.
3. Inspect mounting rack and hardware for integrity.
a. Verify the racks, fasteners, and support structure are in good condition and securely fastened.
b. Inspect for signs of corrosion.
c. For composite aircraft, inspect any aluminum foil tape used to ground the GTX and verify that
it is not torn, damaged, or showing signs of corrosion. If any of these occur then the tape must
be replaced. Refer to appendix B for details.
4. Inspect any bonding straps for corrosion, loose connections, or signs of damage. Refer to appendix
5. Inspect the condition of the wiring harnesses and coaxial cables.
a. Inspect all instrument panel wiring and coax for chafing, damage, proper routing of wire
bundles and security of attachment in accordance with AC 43.13-1B, chapter 11, section 8,
paragraph 11-96. Pay particular attention to possible areas of chafing.
b. Verify that the harness shows no signs of cracking, chafing, abrasion, melting, or any other
form of damage.
c. Inspect the GTX 330/330D/335/345 connectors for corrosion or other defects. Check the
integrity of the shield block ground attachments to the harness connector assembly as well as
the integrity of the individual shields and their attachment.