This movement is not certified. When installed, your clock is for use as a time indicator and is not classified as a flight instrument. To confirm fitment your clock must be manufacture by Borg and have a screw style terminal. If you have questions feel free to contact us. Everything is included to install this kit into your clock. It also includes instructions. This Quartz Conversion Kit is perfect for those looking to upgrade their 12 or 24 volt BORG made aircraft clocks. The kit includes everything you need to convert your clock to a more reliable and accurate quartz movement.