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**EXHIBIT      12.1**

**CERTIFICATION**
** **

| 1) | I                  have                  reviewed this annual report on Form 20-F of CHC Helicopter                  Corporation; |
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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                  company                  as of, and for, the periods presented in this                  report; |
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| 4) | The                  company’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 company and                  have: |
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|   | a) | Designed                  such                  disclosure controls and procedures, or caused such disclosure controls                  and                  procedures to be designed under our supervision, to ensure that                  material                  information relating to the company, including its consolidated                  subsidiaries, is made known to us by others within those entities,                  particularly during the period in which this report is being                  prepared; |
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|   | b) | Evaluated                  the                  effectiveness of the company’s disclosure controls and procedures and                  presented in this report our conclusions about the effectiveness                  of the                  disclosure controls and procedures, as of the end of the period                  covered by                  this report based on such evaluation;                  and, |
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|   | c) | Disclosed                  in                  this report any change in the company’s internal control over financial                  reporting that occurred during the period covered by the annual                  report                  that has materially affected, or is reasonably likely to materially                  affect, the company’s internal control over financial reporting;                  and, |
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| 5) | The                  company's                  other certifying officer and I have disclosed, based on our most                  recent                  evaluation of internal control over financial reporting, to the                  company's                  auditors and the audit committee of the company's board of directors                  (or                  persons performing the equivalent                  functions): |
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|   | a) | All                  significant deficiencies and material weaknesses in the design                  or                  operation of internal control over financial reporting which are                  reasonably likely to adversely affect the company’s ability to record,                  process, summarize and report financial information;                  and, |
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|   | b) | Any                  fraud,                  whether or not material, that involves management or other employees                  who                  have a significant role in the company's internal control over                  financial                  reporting. |
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| Date:                  September 16, 2005 |   | [signed]                  Sylvain Allard                 |
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|                                           |   | Sylvain                  Allard                          |
|                                           |   | President                  & Chief Executive Officer |

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