Transponders

Browse aircraft transponders used for identification and surveillance functions at BAS Part Sales. This category helps aircraft owners and maintenance shops locate replacement equipment, particularly when a new part is difficult to find for an older airframe.

Before ordering, confirm Mode C, Mode S or ADS-B-related requirements, part number and test obligations. Check the item details and available records rather than assuming every part from an aircraft model will fit another. As-removed components require appropriate professional inspection before installation.