Check this
I’m pasting the message from Online Site.
My Wife case also approved.
Receipt Number: eac020635****
Application Type: I485, APPLICATION TO ADJUST TO PERMANENT RESIDENT STATUS
Current Status:
This case has been approved. On October 11, 2002, an approval notice was mailed. If 14 days have passed and you have not received this notice, you may wish to verify or update your address. To update your address, please speak to an Immigration Information Officer during business hours.