The MAINT annunciator indicates the IDARS memory is approximately what percent full?

• A. ~60%
• B. ~80%
• C. ~90%
• D. ~100%

Answer: (B)

The warning level is about when the IDARS memory is getting close to full. The MAINT annunciator is there to give you time to back up or purge older maintenance data before you lose the ability to log new entries. That warning is set at roughly eighty percent full, so you have a practical interval to manage the data without waiting until it’s too late. If you waited until sixty percent, the alert would come much earlier than needed; waiting until ninety or one hundred percent would leave little to no time to act before data could be lost. So the 80% mark is the appropriate, expected threshold.