Avionics FAQs

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Avionics FAQ

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My CAS-66A TCAS I system seems to be having intermittent problems when flying areas with highly dense traffic, what could be the problem?

The problem is mostly likely that the TPU-66A processor needs its software updated to level 01/14. The problem is caused by an internal buffer overload when operating in areas of high Mode S activity. Honeywell Software Bulletin SWB TPU66A-SW6 reprograms the TPU with new software to increase the size of the buffer to prevent F8601 faults when the TPU is operating in dense Mode S airspace.