Videos You can view a few of our production videos here. Restoring Personal Aircraft The real cost of restoring a entry-level personal aircraft. The first in a series of educational videos brought to you by Aero Advocates - a premier aircraft management and consulting firm. Garmin GNS 430 OBS Function Let Larry walk you through some OBS functions on the Garmin GNS 430 that you may not know about. PS Engineering Bluetooth aircraft audio control console See Larry Ground and flight test a new PS Engineering Bluetooth aircraft audio control console.