HEICO (HEI) 10-K 2011 FY Annual report

Exhibit 23

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement Nos. 33-4945, 33-62156, 333-08063, 333-26059, 333-81789, 333-108471 and 333-161956 on Forms S-8 and Registration Statement No. 333-161957 on Form S-3 of our reports dated December 21, 2011, relating to the consolidated financial statements and financial statement schedule of HEICO Corporation and subsidiaries and the effectiveness of HEICO Corporation and subsidiaries’ internal control over financial reporting, appearing in this Annual Report on Form 10-K of HEICO Corporation and subsidiaries for the year ended October 31, 2011.

/s/ DELOITTE & TOUCHE LLP

Certified Public Accountants

Miami, Florida

December 21, 2011