During a typical audit process, the CA will want to review various documents including but not limited to: board minutes, finance reports, bank statements, contracts, loans, etc.

Next the CA will ask questions, requesting explanations of transactions, and backup to support transactions.

Next the CA will provide proposed changes to management that would require management to agree or disagree with the changes to the financials.

The Auditor(s) will ask management or at least one Board member to sign a "Management Representation Letter" at the end of the audit.

Auditors will provide draft financial statements for review and approval. Other written reports could typically include a management letter with recommendations for improvements. (This is where I believe a system would be implimented to prevent future delays in filing of the financials and the MD & A) .

Hope this helps.