Could you confirm whether the part number of the TCAS computer is altered as a result of the upgrade from software version 7.0 to version 7.1?
Could you provide clarification regarding the technical and configuration differences between TCAS computer part number 7517900-10020 and part number 066-50000-2220?
Probably not a PN change unless its part of a SB or AD, most probably a mod status change.
Both part numbers serve the same purposes and meet the same TCAS spec but the manufacturers and system are different the first pn is more of an all in one solution while the 2nd pn is part of the entire honeywell TCAS setup.
By no means an expert on this but I feel this should answer most of your question.
The following user(s) said Thank You: Mark, dynamics
