1ST AMENDMENT TO LOAN AGREEMENT DATED AS OF APRIL 23, 2002 BY AND AMONG PETROLEUM HELICOPTERS, INC., ACADIAN COMPOSITES, LLC, AIR EVAC SERVICES, INC., EVANGELINE AIRMOTIVE, INC., AND INTERNATIONAL HELICOPTER TRANSPORT, INC. AND WHITNEY NATIONAL BANKLoan Agreement • August 9th, 2004 • Petroleum Helicopters Inc • Air transportation, nonscheduled
