What is CYA?
Cover- Your- A*s
If Maintenance say "you're good to go", well take that with a grain of salt. Put a snag in the logbook, call maintenance so they " know" you have a snag in the log, then they have to answer it, consult the MEL, and sign off the snag with a signature. Then a copy is in the system, plus there is a answered snag in the aircraft logbook.. Or wait for a part/repair before the aircraft is good to go.
Always keep a copy , if you can of any irregular ops , ie datalink messages from crew sked, "you are legal to fly an extra leg" or whatever..