Originally Posted by
RandomNobody
Using TSA locks is illegal for securing firearm cases. It shall be a lock only you have a key to. Everybody has keys to TSA locks.
The relevant code for transporting firearms as checked baggage 14 CFR 1540.111(c):
...
(iv) The container in which it is carried is locked, and only the passenger retains the key or combination.
This suggests some flexibility in how the TSA interprets it. I still have to think over what I want to do.
This is from TSA website on 9/16/2024:
Transporting Firearms and Ammunition | Transportation Security Administration (tsa.gov)Only the passenger should retain the key or combination to the lock unless TSA personnel request the key to open the firearm container to ensure compliance with TSA regulations. You may use any brand or type of lock to secure your firearm case, including TSA-recognized locks.