Is the Honeywell IVA-81D TCAS Indicator a direct replacement for the IVA-81A?
Yes, the IVA-81D is a fit, form, and function replacement for the IVA-81A TCAS Indicator. The IVA-81D replacement should be strongly considered when replacing a defective IVA-81A in an existing TCAS system or the installation of an IVA-81A indicator into a new TCAS installation. This is due to the fact that certain parts (such as the CRT) for the IVA-81A will no longer be available in the very near future.