Section 45.29.310 - When filing required to perfect security interest or agricultural lien; security interests and agricultural liens to which filing provisions do not apply(a) Except as otherwise provided in (b) of this section and AS 45.29.312(b), a financing statement must be filed to perfect all security interests and agricultural liens.(b) The filing of a financing statement is not necessary to perfect a security interest (1) that is perfected under AS 45.29.308(d), (e), (f), or (g);(2) that is perfected under AS 45.29.309 when it attaches;(3) in property subject to a statute, regulation, or treaty described in AS 45.29.311(a);(4) in goods in possession of a bailee that is perfected under AS 45.29.312(d)(1) or (2);(5) in certificated securities, documents, goods, or instruments that is perfected without filing, control, or possession under AS 45.29.312(e), (f), or (g);(6) in collateral in the secured party's possession under AS 45.29.313;(7) in a certificated security that is perfected by delivery of the security certificate to the secured party under AS 45.29.313;(8) in deposit accounts, electronic chattel paper, electronic documents, investment property, or letter-of-credit rights that is perfected by control under AS 45.29.314;(9) in proceeds that is perfected under AS 45.29.315; or(10) that is perfected under AS 45.29.316.(c) If a secured party assigns a perfected security interest or agricultural lien, a filing under this chapter is not required to continue the perfected status of the security interest against creditors of and transferees from the original debtor.