background image

 

 

ICA 

1500-SERIES-ICA-1

 

Revision A - 01/22/2009

 

Page 

1

 of 

15

 

 

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. 

 

 

© 2009, Filtration Development Company, LP 

Summary of Contents for 1500EFS

Page 1: ... 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 2009 Filtration Development Company LP ...

Page 2: ... 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 FDC aerofilter 8 Digital Drive Suite 104 Novato CA 94949 USA Tel 415 884 0555 Fax 415 884 0505 Toll Free US Canada 800 350 6674 www fdcaerofilter com REV DATE DESCRIPTION BY CHECKED APPROVED IR 08 15 1999 Initial Release AG A...

Page 3: ... Table 3 1 Recommended Service Intervals 7 4 0 Filter Element Servicing 8 4 1 General Information 8 4 2 Removal and Reinstallation 8 Figure 4 1 Filter Element 8 4 3 Filter Element Cleaning 9 4 4 Inspection of Element Severe Conditions 10 4 5 Inspection of Element Normal Conditions 10 4 6 Oiling the Filter Element 11 5 0 Component Replacement 12 5 1 Removal and Replacement of Actuator 12 Figure 5 1...

Page 4: ...sely affected prior to the next scheduled servicing The pilot actuated alternate air system is provided to bypass the filter elements in the event that engine performance is degraded due to filter blockage The alternate air system should be inspected at regular intervals or prior to flight into environmental conditions that may require its use 1 2 Scope of ICA This manual describes the airworthine...

Page 5: ... contained in this ICA Although best efforts will be made to distribute revisions and updates to the registered owner of the product it is ultimately the responsibility of the current user to ensure he is using the most current information available 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 f...

Page 6: ...ess 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 7: ...striction However large obvious debris such as leaves brush litter etc should be removed prior to flight Good judgment and practice will ensure safe operation as well as long filter life Inspections scheduled and conditional shall be performed by qualified personnel and in accordance with standard aircraft practice Compliance with all applicable Service Bulletins and Airworthiness Directives is ma...

Page 8: ... as when removing and replacing the element from the duct The pleated material s fragile wire mesh is easily damaged or deformed when allowed to scrape against other components Careful attention to the following section will assure full service from the filter element 4 2 Removal and Reinstallation a Remove inlet fairing b Loosen the side turn fasteners securing the filter element lift the front e...

Page 9: ...atively soak element in a shallow pan of filter cleaner and allow cleaner to permeate for ten minutes NOTE DO NOT use any other solvents or materials to clean filter element DO NOT use Gasoline DO NOT use Jet A or Kerosene DO NOT use Caustic Cleaning Solution DO NOT use Detergents DO NOT use Parts Cleaning Solvents DO NOT use Pressure or Steam Cleaners DO NOT use High Pressure Hose Nozzles CAUTION...

Page 10: ... check for holes in the element material greater than 020 it is normal to observe pinholes in the filter media particularly at the pleat folds These pinholes will not allow the passage of dirt once the element is oiled Close the holes if present using a fine pick to reposition the media material to cover the hole Numerous holes in the media greater than 0 030 will reduce the filtration efficiency ...

Page 11: ...T use Transmission Oil DO NOT use Hydraulic Fluid DO NOT use Lightweight Oils WD 40 LPS etc a Fill sprayer with recommended quantity of FDC aerofilter Oil 15 Fluid Ounces b Charge sprayer with compressed air c Apply oil to the filter element with smooth complete passes parallel to pleats d Repeat above applying oil with smooth complete passes 90 degrees to pleats e Use all of the measured quantity...

Page 12: ...f actuator on to mount bracket stud and secure with washer nut and cotter pin Note nut to be finger tight then backed off to next slot for pin installation b Position lug end of actuator between spring flanges and secure with bolt spacer bushing washer lock nut Note nut to be tight c Connect actuator harness and safety d Reinstall actuator e Cycle actuator to verify function then reinstall actuato...

Page 13: ...ove forward inlet fairing b Disconnect DPS harness c Disconnect DPS pressure line d Remove side cover of aft inlet fairing e Remove 4 screws nuts and washers attaching DPS to rear of housing assembly Replacement Reverse of above Figure 5 2 DPS Assembly Housing Assembly Aft Filter Element DPS Pressure Line DPS Harness DPS DPS Mounting Hardware 4 PL ...

Page 14: ...ressure port c Apply suction to test port and check that cockpit annunciator light comes on at 9 ins H2O 1 in H2O d Replace DPS if out of limits e Remove test equipment and replace pressure tube assembly on DPS port f Lift guard and put ALT AIR switch in the OPEN position g Check that the alternate air bypass door actuates to full open position h Put ALT AIR switch to CLOSED position i Check that ...

Page 15: ...IR to OPEN if TOT is within limits Annunciator light on at all power settings Filter element is dirty Select ALT AIR to OPEN only if TOT for power required exceeds limits while still in harsh environment Select ALT AIR to OPEN when in clean air Clean filter element before next mission Annunciator light stays when ALT AIR switch is set to OPEN Actuator failed in retracted position Replace actuator ...

Reviews: