It is for a friend of mine who works on old turboprops with these avionics.
Honeywell no longer support these systems at all and nobody will provide any documentation.
Even warning lights cannot be troubleshooted.
The only solution is to send the item(s) to e.g. SE Aerospace in the USA for overhaul exchanges, but without any install manuals it is impossible to know which of the system components is the problem.
If somebody has even paper manuals which could be borrowed, that would be great.
Honeywell no longer support these systems at all and nobody will provide any documentation.
Even warning lights cannot be troubleshooted.
The only solution is to send the item(s) to e.g. SE Aerospace in the USA for overhaul exchanges, but without any install manuals it is impossible to know which of the system components is the problem.
If somebody has even paper manuals which could be borrowed, that would be great.
