System Maintenance Manual GTN 6XX/7XX Part 23 AML STC
190-01007-A1
Page 4-8
Rev. 5
4.7 GPS/WAAS Antenna Cable Overbraid Inspection (If Installed)
The GPS/WAAS antenna cable overbraid must be inspected after a known or suspected lightning strike.
Check the antenna and overbraid for the following:
1. Check the cable overbraid for pinching, melting or evidence of arcing at the GPS/WAAS antenna
end and at the GTN 6XX/7XX.
2. Check the lug at the GTN end for evidence of arcing and verify that the lug is still secured to the
overbraid and to the GTN connector shield block.
3. Check that the overbraid is securely attached at the GPS/WAAS antenna end and at the
GTN6XX/7XX.
If any of these checks shows evidence of a lightning strike, replace the overbraid assembly in accordance
with Section 6.9.
4.8 WXR HSDB Cable Overbraid Inspection (If Installed)
The WXR HSDB cable overbraid must be inspected after a known or suspected lightning strike. Check the
overbraid for the following:
1. Check the cable overbraid for pinching, melting or evidence of arcing at the WXR end and at the
bulkhead to which the WXR R/T is mounted.
2. Check the lug at the WXR end for evidence of arcing and verify that the lug is still secured to the
overbraid and to the WXR shield block.
3. Check that the overbraid is securely attached at the bulkhead end.
If any of these checks shows evidence of a lightning strike, replace the overbraid assembly in accordance
with Section 6.10.
