The CPU battery in UA's FMS Navigation Computer Unit (NCU) generally lasts between three to seven years depending on its usage. When the FMS CPU battery begins to drain below standard levels, an FMC BATTERY LOW message will appear well before a battery failure to alert the user.

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UA thanks all of our loyal customers as the company has once again received high praise from you in Professional Pilot Magazine's 2021 Avionics Product Support Survey.

Visit UniNet today to download recently released Service Bulletins or Service Letters from the Tech Pubs tab.

Visit UniNet today to download recently released Service Bulletins or Service Letters from the Tech Pubs tab.