THIS AMENDMENT TO LOAN DOCUMENTS (this “Amendment” ) is made as of June 2, 2010,
by and between ENVIRONMENTAL TECTONICS CORPORATION (the “Borrower” ) and PNC
BANK, NATIONAL ASSOCIATION (the “Bank” ).
A. The Borrower has executed and delivered to the Bank, one or more promissory notes, letter agreements,
loan agreements, security agreements, guaranties, pledge agreements, collateral assignments, and other
agreements, instruments, certificates and documents, some or all of which are more fully described on attached
Exhibit A, which is made a part of this Amendment (collectively as amended from time to time, the “Loan
Documents” ) which evidence or secure some or all of the Borrower’s obligations to the Bank for one or more
loans or other extensions of credit (the “Obligations” ).
B. The Borrower and the Bank desire to amend the Loan Documents as provided for in this Amendment.
NOW, THEREFORE, in consideration of the mutual covenants herein contained and intending to be legally
bound hereby, the parties hereto agree as follows:
1. Certain of the Loan Documents are amended or terminated as set forth in Exhibit A. Any and all references
to any Loan Document in any other Loan Document shall be deemed to refer to such Loan Document as
amended by this Amendment. This Amendment is deemed incorporated into each of the Loan Documents. Any
initially capitalized terms used in this Amendment without definition shall have the meanings assigned to those
terms in the Loan Documents. To the extent that any term or provision of this Amendment is or may be
inconsistent with any term or provision in any Loan Document, the terms and provisions of this Amendment shall
2. The Borrower hereby certifies that: (a) all of its representations and warranties in the Loan Documents, as
amended by this Amendment, are, except as may otherwise be stated in this Amendment: (i) true and correct as
of the date of this Amendment, (ii) ratified and confirmed