It varies from FSDO to FSDO. From what I've been told you must be a current check airman in order to have it renewed. Being a part 121 (or 135) captain is not enough.If you are a part 121 or 135 pilot who is in a position to evaluate other people, you should be able to bring your 8710 form to an FAA inspector and he/she should be able to sign you off. It might be faster if you go to your own POI.
Having said that, many inspectors will renew it anyways because:
- They aren't sure about the rules, and/or because
- They don't care...