CERTIFICATION REQUIRED BY RULE
13a-14(a) OR RULE 15d-14(a), PURSUANT TOSECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Robert E. Brown, President and Chief
Executive Officer of CAE Inc., certify that:

|1. | I have reviewed this annual
      report on Form 40-F of CAE Inc.;                                                                                                                                                                                                                                                                
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|2. | Based on my knowledge,
      this report does not contain any untrue statement of a material fact or
      omit to state a material fact necessary to make the statements made, in
      light of the circumstances under which such statements were made, not
      misleading with respect to the period covered by this report;
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|3. | Based on my knowledge,
      the financial statements, and other financial information included in this
      report, fairly present in all material respects the financial condition,
      results of operations and cash flows of the issuer as of, and for, the
      periods presented in this report;                       
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|4. | The issuers other
      certifying officer and I are responsible for establishing and maintaining
      disclosure controls and procedures (as defined in Exchange Act Rules
      13a-15(e) and 15d-15(e)) for the issuer and have:                                                                                             
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|   | (a)                                                                                                                                                                                                                                                                                                                               
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|   | (b)                                                                                                                                                                                                                                                                                                                               
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|   | (c)                                                                                                                                                                                                                                                                                                                               
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|5. | The issuers other
      certifying officer and I have disclosed, based on our most recent
      evaluation of internal control over financial reporting, to the issuers
      auditors and the audit committee of the issuers board of directors (or
      persons performing the equivalent functions):                       
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|   | (a)                                                                                                                                                                                                                                                                                                                               
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|   | (b)                                                                                                                                                                                                                                                                                                                               
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Date: June 28, 2006

/s/ Robert E. BrownName: Robert E. BrownTitle:
President and Chief Executive Officer

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