HEICO (HEI) 10-Q 2024 Q1 Quarterly report

Exhibit 32.1

SECTION 1350 CERTIFICATION

In connection with the Quarterly Report of HEICO Corporation (the “Company”) on Form 10-Q for the period ended January 31, 2024 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Laurans A. Mendelson, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1)The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2)The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date:	February 28, 2024	/s/ LAURANS A. MENDELSON
		Laurans A. Mendelson
		Chief Executive Officer
		(Principal Executive Officer)