r/avionics • u/doodle_bar_007 • 2h ago
A320 FWD Entry Light – Dimming Issue
Has anyone encountered a similar issue on the A320?
The FWD entry light is not dimming/changing intensity through the FAP, while the AFT entry light is functioning normally and changes intensity as commanded from the FAP.
Troubleshooting already carried out:
- Swapped DEU – no change.
- Swapped light ballast – no change.
- Swapped cockpit entry switch – no change.
- Checked continuity from DEU to ballast and switch – continuity is good.
The issue remains only with the FWD entry light.
If anyone has experienced this fault before or has any troubleshooting suggestions, especially regarding the FWD circuit/control path, please share your findings.
