Is the IVA-81D TCAS Indicator a direct replacement for the older IVA-81A?
Yes, with its improved design, the IVA-81D (P/N 066-01171-XXXX) is a direct fit, form, and function replacement for the IVA-81A (P/N 066-50001-XXXX). Click Here to see the Installation Bulletin from Honeywell.