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INSTRUCTIONS FOR CONTINUED AIRWORTHINESS
This document provides information necessary for the maintenance of the 1500EFS Engine Inlet
Barrier Filter System installed on the MDHI/Hughes OH-6 helicopter.
Revision A - 01/22/2009
1500EFS
ENGINE INLET BARRIER FILTER SYSTEM
MDHI/HUGHES OH-6 A-C "CAYUSE"
© 2009, Filtration Development Company, LP
ICA
1500-SERIES-ICA-1
Page 1 of 15
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Table of Contents
Summary of Contents for FDC aerofilter 1500 Series
- Page 1 1500-SERIES-ICA-1 INSTRUCTIONS FOR CONTINUED AIRWORTHINESS 1500EFS ENGINE INLET BARRIER FILTER SYSTEM MDHI/HUGHES OH-6 A-C “CAYUSE” This document provides information necessary for the maintenance of the 1500EFS Engine Inlet Barrier Filter System installed on the MDHI/Hughes OH-6 helicopter. ©...
- Page 2 It is the responsibility of the user of this document to verify that this is the latest revision released by FDC/aerofilter Engineering. It is Filtration Development Company’s intention to provide our customers with the best possible support and assistance with our products. Please contact us using the information below to get the latest version of this and other documents.
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Page 3: Table Of Contents
Instructions for Continued Airworthiness 1500-SERIES-ICA-1 TABLE OF CONTENTS Introduction ..........................4 General Product Information ..................... 4 Scope of ICA ........................4 Precautions ........................4 Definitions, Abbreviations, Acronyms and Symbols ............5 Distribution ........................5 Airworthiness Limitations ....................... 6 Inspection/Test Requirements .................... -
Page 4: Introduction
Instructions for Continued Airworthiness 1500-SERIES-ICA-1 1.0 Introduction 1.1 General Product Information The engine filter system is designed to protect the turbine engine from foreign object damage and micro erosion when operating in normal and severe environmental conditions. The Model 1500EFS Engine Inlet Barrier Filter System consists of a duct assembly, alternate air door assembly, filter element, and low inlet pressure annunciator system. -
Page 5: Definitions, Abbreviations, Acronyms And Symbols
Additional copies of this ICA as well as revisions and updates may be obtained by contacting FDC/aerofilter. Refer to “DOCUMENTATION SUPPORT” on page 2 for full contact information, including the website address. -
Page 6: Airworthiness Limitations
Instructions for Continued Airworthiness 1500-SERIES-ICA-1 2.0 Airworthiness Limitations The Airworthiness Limitations section specifies inspections and other maintenance required under §43.16 and §91.403 of the Federal Aviation Regulations unless an alternate program has been approved. There are no airworthiness limitations associated with this system. Page 6 of 15 Revision A - 01/22/2009... -
Page 7: Inspection/Test Requirements
Instructions for Continued Airworthiness 1500-SERIES-ICA-1 3.0 Inspection/Test Requirements 3.1 General Information This section covers the basic maintenance and service requirements necessary for safe operation and continued airworthiness of the Model 1500EFS Engine Inlet Barrier Filter System. 3.2 Service Intervals When severe or unusual environmental conditions exist or as flight requirements dictate, it is the responsibility of the operator to increase the frequency and scope of inspections necessary to ensure safe operation. -
Page 8: Filter Element Servicing
Instructions for Continued Airworthiness 1500-SERIES-ICA-1 4.0 Filter Element Servicing 4.1 General Information To insure proper function and maintain a high level of filtration efficiency great care should be taken when handling the element. The element is most likely to be damaged during servicing than in operation. -
Page 9: Filter Element Cleaning
Use only FDC/aerofilter cleaner (P/N 40-15) to clean the filter element. Severe Conditions: Soak element dirty side down in a pan of FDC/aerofilter filter cleaner to a depth to allow complete coverage of filter element. Allow cleaner to permeate for 20 to 60 minutes, depending on condition. -
Page 10: Inspection Of Element (Severe Conditions)
• Aft element latch brackets for wear and loose rivets • Forward element Camloc receptacles for security and loose rivets. Defects found are to be rectified. Consult FDC Engineering in the event any repair cannot be performed using standard practices. -
Page 11: Oiling The Filter Element
DO NOT use Hydraulic Fluid DO NOT use Lightweight Oils (WD-40, LPS, etc.) Fill sprayer with recommended quantity of FDC/aerofilter Oil (15 Fluid Ounces). Charge sprayer with compressed air. Apply oil to the filter element with smooth, complete passes parallel to pleats. -
Page 12: Component Replacement
Instructions for Continued Airworthiness 1500-SERIES-ICA-1 5.0 Component Replacement 5.1 Removal and Replacement of Actuator Removal: Remove forward inlet fairing. Open bypass door. Disconnect actuator harness. Remove element and forward section of of housing assembly. Remove actuator cover. Remove actuator. Replacement: Place body end of actuator on to mount bracket stud and secure with washer, nut and cotter pin. -
Page 13: Removal And Replacement Of Dps
Instructions for Continued Airworthiness 1500-SERIES-ICA-1 5.2 Removal and Replacement of DPS Removal: Remove forward inlet fairing. Disconnect DPS harness. Disconnect DPS pressure line. Remove side cover of aft inlet fairing. Remove 4 screws, nuts and washers attaching DPS to rear of housing assembly. Replacement: Reverse of above. -
Page 14: Functional Test
Instructions for Continued Airworthiness 1500-SERIES-ICA-1 6.0 Functional Test 6.1 DPS Functional Test Connect aircraft battery and turn on master switch. Remove pressure tube assembly and connect vacuum tester to DPS pressure port. Apply suction to test port and check that cockpit annunciator light comes on at 9 ins. O, ±1 in. -
Page 15: Troubleshooting
Instructions for Continued Airworthiness 1500-SERIES-ICA-1 7.0 Troubleshooting Table 7.1 – Troubleshooting SYMPTOM PROBABLE CAUSE ACTION Annunciator light on when DPS stuck in closed position. Replace DPS. engine is not running. Monitor engine instruments. Do Annunciator “flickers” at all Filter element is partially not select if TOT...
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