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April | May 2015 April | May 2015


The Source for Helicopter Maintenance Professionals


DynCorp International’s Mechanic Apprentice Program


Tips for the Care and Feeding of your Helicopter OEM Tech Reps


A Quick Guide to Troubleshooting Hydraulic System Internal Leaks


Gas Turbine Engines Instructions for Continued Airworthiness — Why?


HelicopterMaintenanceMagazine.com


DynCorp International mechanics Mary Cutright and Max Pavlitskiy work on a CAL FIRE helicopter. See our article on DynCorp’s mechanic apprenticeship program on page 24. Photo by Jon Robbins. .


DEPARTMENTS Vertical Viewpoint


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News 28 Events 36 Ad Index


Editorial Director


Editorial Director Joe Escobar | 920.747.0195


jescobar@HelicopterMaintenanceMagazine.com Managing Editor | Dionne Shearer


Contributing Writers | Jeff Cavarra, Ralph Hawkins, Terry Peed, Robert Peterson, R. Fred Polak


Publisher Greg Napert | 608.436.3376


gnapert@HelicopterMaintenanceMagazine.com


Director of Sales/Production Coordinator Bob Graf | 608.774.4901


bgraf@HelicopterMaintenanceMagazine.com


National Accounts Manager Russell Brody | 732.275.1167 rbrody@dommagazine.com


Creative/Production Director Becker 505, LLC | info@becker505.com


Helicopter Maintenance Helicopter Maintenance magazine is published six times per year. All


statements, including product claims, are those of the person or organization making the statement or claim. The publisher does not adopt any such statement or claim as its own and any such statement or claim does not necessarily refl ect the opinion of the publisher. Printed in the USA. POSTMASTER: Send address changes to Helicopter Maintenance magazine at P.O. Box 175, Milton, WI 53563. All rights reserved. Permission to reprint articles or quote excerpts granted only upon written request.


Engines Gas Turbine Engines Instructions for Continued Airworthiness — Why? Tech Support Tips For the Care and Feeding of your OEM Tech Reps (CSRs) Workforce Development A Helicopter Mechanic Apprenticeship Program


Editorial Advisory Board


Michael Broderick, business development specialist, Trace WorldWide


Randy Davis-Yates, director of maintenance, Maricopa County Sheriff’s Offi ce Aviation Division


Edward Jerin, aviation maintenance manager, Era Med LLC Boston Med Flight critical care transport service contract


Dana Kerrick, vice president, International Aviation Composites


Terry Peed, chief inspector, Helicopter Specialties, Inc.


Del Richardson, commercial pilot and A&P/IA, ABC News Pittsburgh, SKY4


Jon Robbins, supervisor, helicopter maintenance program, CAL FIRE (California Fire Aviation Management Unit)


April | May 2015 HelicopterMaintenanceMagazine.com 3


FEATURES Airframe A Quick Guide to Troubleshooting Hydraulic System Internal Leaks Avionics An Avionics System of Epic Proportions: Part Two of Two


10 6 6


10 16 20 24


37 38


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