(a) A claim may not be brought under AS 12.72.010 or the Alaska Rules of Criminal Procedure if

(1) the claim is based on the admission or exclusion of evidence at trial or on the ground that the sentence is excessive;

(2) the claim was, or could have been but was not, raised in a direct appeal from the proceeding that resulted in the conviction;

(3) the later of the following dates has passed, except that if the applicant claims that the sentence was illegal there is no time limit on the claim:

(A) if the claim relates to a conviction, 18 months after the entry of the judgment of the conviction or, if the conviction was appealed, one year after the court's decision is final under the Alaska Rules of Appellate Procedure;

(B) if the claim relates to a court revocation of probation, 18 months after the entry of the court order revoking probation or, if the order revoking probation was appealed, one year after the court's decision is final under the Alaska Rules of Appellate Procedure;

(4) one year or more has elapsed from the final administrative decision of the Board of Parole or the Department of Corrections that is being collaterally attacked;

(5) the claim was decided on its merits or on procedural grounds in any previous proceeding; or

(6) a previous application for post-conviction relief has been filed under this chapter or under the Alaska Rules of Criminal Procedure.

(b) Notwithstanding (a)(3) and (4) of this section, a court may hear a claim

(1) if the applicant establishes due diligence in presenting the claim and sets out facts supported by admissible evidence establishing that the applicant

(A) suffered from a physical disability or from a mental disease or defect that precluded the timely assertion of the claim; or

(B) was physically prevented by an agent of the state from filing a timely claim;

(2) based on newly discovered evidence if the applicant establishes due diligence in presenting the claim and sets out facts supported by evidence that is admissible and

(A) was not known within

(i) 18 months after entry of the judgment of conviction if the claim relates to a conviction;

(ii) 18 months after entry of a court order revoking probation if the claim relates to a court's revocation of probation; or

(iii) one year after an administrative decision of the Board of Parole or the Department of Corrections is final if the claim relates to the administrative decision;

(B) is not cumulative to the evidence presented at trial;

(C) is not impeachment evidence; and

(D) establishes by clear and convincing evidence that the applicant is innocent.

(c) Notwithstanding (a)(6) of this section, a court may hear a claim based on a final administrative decision of the Board of Parole or the Department of Corrections if

(1) the claim was not and could not have been challenged in a previous application for post-conviction relief filed under this chapter or under the Alaska Rules of Criminal Procedure; and

(2) a previous application for post-conviction relief relating to the administrative decision has not been filed under this chapter or under the Alaska Rules of Criminal Procedure.

(d) The court may not consider a substantive claim in an application brought under AS 12.72.010 or the Alaska Rules of Criminal Procedure until the court has first determined that

(1) the application is timely; and

(2) except for an application described in AS 12.72.025 or allowed under (c) of this section, no previous application has been filed.