There’s more than one way for an approval to expire, and you would need to know how to read it to determine that (both FLPA and NOA). Also, these approves are for use statewide with exceptions as not all FLPA panels can be used in zones 4 and 5, only 9lbs rated. Remember, when it comes to impact protection, there is no HVHZ only zones 4 and 5.
You can have a regional or one-use approval that would not have NOA sheets or FLPA like you would expect to see. These products are for use in the single approved case, they can not be used statewide. This is rare as it would severely limit a products use, you generally only see it on custom doors or site built windows.
But to answer your question specifically, an approval can be invalid far before it’s actual expiration date if it runs throughout a code cycle change and isn’t compliant or revised to meet the new code. NOA/FLPA must be compliant with the current code cycle, or they are invalid. Most entities submit an Engineers letter stating compliance with the new code cycle…but you have to check.