04/26/21
Message Overview:
Message Name:
NUISANCE ILLUMINATION ADC RED LED
| Identifier: | 341OBS007 |
| Effectivity: | AIRCRAFT 20501 - 20999 |
| System: | Navigation |
| Associated CAS: | None |
| System Description: | 34-13-00 |
| Schematic Diagram: | None |
| Wiring Diagram: | None |
Message Description:
There have been recurring cases whereby the Light Emitting Diode remains illuminated red after a single non-catastrophic event has occurred and has been stored in the ADC non-volatile memory (NVM).
Possible Causes:
- ADC Strap Code
Troubleshooting Tips:
Advisory Wire/Service Bulletin: None
Forum Articles/Infoservice/Newsletter: None
It is also normal for the LED to be illuminated amber during the field loading of software, and it would be expected that the LED would extinguish at the completion of the field loading process. However, if the strap code was not changed when required by the aircraft Service Bulletin, the LED may illuminate red and will not extinguish until the strap code has been corrected, and three aircraft cycles have been accomplished. The continued red LED indication in this occurrence is normal for three aircraft cycles, not power cycles, due to the internal process of the ADC reviewing the fault log during ADC initialization.
Quick Links:
None
Troubleshooting Recommendations:
- Follow RC SIL 523-0817716-001000.