Originally posted by Pork Chop
there is no "extension" of AP. when it expires, its dead. you have to apply for a new one. and the pre-condition for application is that the applicant *must* be physically present in the u.s. when the application is made, and the AP must be approved and physically in the hands of the applicant when they commence with their travel.
if you do not have any other valid visa (H1, H4) in your passport, and you leave the u.s. without an approved AP, or if your AP expires while you are still out of the u.s., then you cannot return, and your AOS is considered abandoned by the BCIS.
you have been warned!