FSX keeps an up-to-date history of the number of hours an aircraft flew, although not all aircrafts display such information.
Centurion T210 and the default Cessna C172 are both equipped with this type of display. Should someone wants to change it for any reasons:
- Open C:\Users\<User Name>\AppData\Roaming\Microsoft\FSX\SimObjects folder;
- Select the aircraft you want to change, then
- Edit the accumulated_time value in the aircraft’s state.CFG file will do.
Not recommended to push it too far; otherwise, you may soon need a new aircraft —- Just kidding.
FS Times 
A useful bit of info – I had been wondering if this was tracked. I can see now that I’ve logged 110 hrs across my PMDG 737NGX fleet! Thanks Tom.
LikeLike
Glad to hear that Jonathan.
LikeLike
I am surprised you haven’t added this to you latest RPM-W gauge?
Nice info, thanks
LikeLike
Haven’t you received the update patch I sent you?
LikeLike
I notice that multiple engine AC have also hours for each engine and one I suppose like the airframe hours.
LikeLike
Hi, Check your email for the engine hours. Tom
LikeLike