ICA350-2 NC
Contents
1. FIELD REPAIRS AND REINSTALLING 25 1 Floats Annual leak test may be accomplished with floats mounted on skid tube 25 1 1 Float Removal from Aircraft Deflation of float for removal from aircraft shall be accomplished prior to attempting the removal of the float from aircraft struts Test adapter P N A 51219N may be inserted into the topping valve to deflate or valve poppet may be depressed manually to allow air to escape After floats are deflated the floats may be removed from the aircraft by removing bolts washers and nuts as listed in Figure C 25 1 2 Table II TABLE II CONSUMABLE CLEANING MATERIALS REQUIRED Availability Cleaning Solvent Methyl Ethyl Ketone MEK Commercially available Stiff bristle brush Commercially available Soft bristle brush Commercially available Commercially available Page 16 APICAL INDUSTRIES INCORPORATED ICA350 2 2608 Temple Heights Drive Rev N C Oceanside California 92056 970ct02 25 1 3 Table III TABLE III VISUAL CHECK OF ASSEMBLIES AND COMPONENTS Check Procedure Fabric Seams Cuts tears punctures See Repair Section 25 1 6 abrasions mark with chalk if If beyond limits return to discrepant factory Pressure Relief Valve PRV Leaks opening and closing If valve leaks replace it pressure only see Testing Section 25 1 6 4 Flange Section 25 1 5 leaks return to factory Topping Valve Leaks only see Testing If valve leaks replace it Section 25 12. Table IV in aperture of valve If bubbles indicate a leak at this location remove valve from base flange and check threads in flange base and on valve If threads in flange are damaged return float to factory for repair replacement If valve threads are damaged replace as specified See Figure B Page 19 APICAL INDUSTRIES INCORPORATED ICA350 2 2608 Temple Heights Drive Rev N C Oceanside California 92056 970ct02 TABLE IV TESTING EQUIPMENT MATERIALS REQUIRED Range 0 120 in Hg Optional Optional Optional Optional Scale increments not more than 1 F Optional Leak test Optional Detergent soap and water solution Note Test set up information 1 2 3 Testing of components is accomplished on the float assembly with all components assembled as an operational system Special fixtures and test benches are not required Attachment of inflation shop air source or manometer testing equipment to the float assembly is accomplished using the topping valves and adapters Supplier s Optional Equipment required shall be the type of equipment that can be calibrated for assurance of accuracy 25 1 6 Field Repairs Fabric And Seam Repairs The following repairs will be confined to the patching of punctures tears and holes not greater than 3 inches in diameter or 2 inches by 10 inches in length Replacement of complete section or bulkheads shall not be attempted in the field since operating integrity and or
3. underside of the other patch using a cloth dampened with solvent j Apply adhesive and activate surfaces as instructed in 25 1 6 2 i j and k above k Apply the patch gradually from the center as instructed in 25 1 6 2 1 m n and o above 25 1 6 4 Valves Repair And Replacement Pressure relief valves PRV and the topping valves used in the float assemblies shall be inspected for leaks cleaned as required and if faulty should be replaced Valves may be removed and reinstalled using a valve wrench B 51025 See Figure B for valve removal and replacement a Using special tool valve wrench B 51025 remove valve by inserting wrench into molded flange and turn counter clockwise to remove valves Insert wrench slot over molded tab of topping valve and turn counter clockwise b Check threads in recessed molded fitting bonded in the float and if necessary clean using a dry cloth or soft bristle brush If discrepant replace at factory c Insert valve into threads of recessed molded fitting and turn clockwise by hand to ensure that threads are not crossed Continue to turn by hand until valve is seated Attach wrench turn clockwise and torque to 30 40 inch pounds Page 26 APICAL INDUSTRIES INCORPORATED ICA350 2 2608 Temple Heights Drive Rev N C Oceanside California 92056 970ct02 REF PLUG TAB TOPPING VALVE PRY OR INLET CHECK BASE PE WRENCH B 51025 MOLDED PLUG WALYVWE SEAL PARTS OF WAL
4. 0 Placards 15 N C Section 25 0 Float Removal Cleaning Testing Field Repairs and Reinstalling 16 31 N C Attachment 1 Customer Feedback 32 N C Page 6 APICAL INDUSTRIES INCORPORATED ICA350 2 2608 Temple Heights Drive Rev N C Oceanside California 92056 970ct02 TABLE OF CONTENTS Identification _ Title Page Section 1 0 Introduction 9 1 1 Scope 9 1 2 Purpose 9 1 3 Revision Control Procedure 9 1 4 Service Difficulty Reporting 9 1 5 Applicability 9 1 6 Abbreviations 10 1 7 Precautions 10 1 8 Units of Measurement 10 1 9 Distribution 10 1 10 Description of the System and Installation 11 Section 4 0 Airworthiness Limitations Section 12 Section 5 0 Inspection Requirements and Overhaul Schedule 13 5 1 Inspection Requirements 13 5 2 Component Overhaul Schedule 13 Section 9 0 Towing 14 Section 11 0 Placards 15 11 1 Placard Information 15 11 2 Location 15 11 3 Application 15 Section 25 0 Float Removal Cleaning Testing Field Repairs and Reinstalling 16 25 1 Floats 16 25 1 1 Float Removal 16 25 1 2 Table II 16 25 1 3 Table III 17 25 1 4 Cleaning 17 25 1 5 Testing 18 25 1 6 Field Repairs 20 25 1 7 Reinstalling Floats 28 25 1 8 Completion of Installation 29 25 2 Illustrated Parts List 30 Page 7 APICAL INDUSTRIES INCORPORATED ICA350 2 2608 Temple Heights Drive Rev N C Oceanside California 92056 970ct02 LIST OF TABLES Table Number Description Page I Float Characteristics 11 II Consumable Cleaning Materials Required 16 MI V
5. INCORPORATED ICA350 2 2608 Temple Heights Drive Rev N C Oceanside California 92056 970ct02 os T Figure E Float Attaching Hardware Page 31 APICAL INDUSTRIES INCORPORATED ICA350 1 2608 Temple Heights Drive Rev N C Oceanside California 92056 970ct02 SEMI ANNUAL INSPECTION WORKSHEET HELICOPTER REGISTRATION NO Signature and Date Remarks Semi Annual Inspection Ist 2nd 3rd Ath Sth 6th 1 Inspect floats for chafing breaking or holes Page 13 1 APICAL INDUSTRIES INCORPORATED ICA350 1 2608 Temple Heights Drive Rev N C Oceanside California 92056 970ct02 ANNUAL INSPECTION WORKSHEET HELICOPTER REGISTRATION NO Signature and Date Remarks Annual Inspection Year 1 Year2 Year3 Year4 Year5 Year 6 l Inspect the girt for condition function and security 2 Conduct annual float leak test Inspect floats for chafing or damaged areas Page 13 2 APICAL INDUSTRIES INCORPORATED ICA350 1 2608 Temple Heights Drive Rev N C Oceanside California 92056 970ct02 3 YEAR INSPECTION WORKSHEET HELICOPTER REGISTRATION NO Signature and Date Remarks 3 Year Inspection Year 3 Year 6 Year 9 Year 12 Year15 Year 18 1 Conduct float leak test Inspect floats for chafing or damaged areas Page 13 3
6. contact When a component is bonded over a seam tape or other uneven base press firmly at the edge of the step off first to avoid bridging Then bond the remainder of the component Apply the patch gradually from the center to the edges to minimize the possibility of air bubbles being trapped beneath the patch Using a smooth edge putty knife and starting at the center of the patch apply pressure and move toward the edge of the patch pushing out any air bubbles or wrinkles Take special care when pushing the edge of the patch to prevent the edges from lifting When all wrinkles and air bubbles have been eliminated uniformly roll the joined area using a hand roller m After the patch has dried for approximately 2 hours the repaired area may be inflated to a maximum of 1 0 psi After the repair has dried for 24 hours the product may be inflated to working pressure and tested in accordance with testing instructions in this manual APICAL INDUSTRIES INCORPORATED ICA350 2 Page 24 2608 Temple Heights Drive Rev N C Oceanside California 92056 970ct02 n Clean and inspect the bonded area as follows oO 25 1 6 3 1 Clean any adhesive drops and excess adhesive outside the required bond area by wiping with a clean cloth dampened with solvent 2 Inspect for location overlap lifts wrinkles and air bubbles Reactivate and join to repair these defects Allow the bonded components to cure undisturbed Holes Cuts Tear
7. 5 Section 25 1 6 4 Flange leaks return to factory Girt Assembly Condition function and Return to factory for repair CAUTION The working area for inspection should be covered with a clean tarpaulin carpeting or equivalent protection free of hardware tools and other sharp objects 25 1 4 Cleaning a Use good shop safety precautions and practices at all times when using solvents WARNING USE FLAMMABLE SOLVENTS ONLY IN WELL VENTILATED AREAS DO NOT INHALE FUMES Do not apply cleaning solvent to float decals or stencil markings Page 17 APICAL INDUSTRIES INCORPORATED ICA350 2 2608 Temple Heights Drive Rev N C Oceanside California 92056 970ct02 b Cleaning Float Assembly If Necessary 1 Clean float assembly fabric surfaces using detergent soap and water solution or cleaning solvent Detergent soap and water solution is the preferred method See Table H Cleaning Materials Required Apply cleaning solvent see Table II with a clean soft cloth or a soft bristle brush for areas of oil dust or dirt Immediately remove excess solvent with clean soft cloth and dry using compressed air shop air The compressed air source should be oil and moisture free and should be equipped with a 20 micron filter for best results 25 1 5 Testing Perform a float pressure test annually and also following the overhaul of float assemblies before returning the equipment to service The relief valve and topping valve test
8. APICAL INDUSTRIES INCORPORATED ICA350 2 2608 Temple Heights Drive Rev N C Oceanside California 92056 970ct02 INSTRUCTIONS FOR CONTINUED AIRWORTHINESS FOR UTILITY HELICOPTER FLOAT ASSEMBLIES EUROCOPTER HELICOPTER AS 350 FLOAT ASSEMBLY P N 20331 101 AND 20331 102 Page 1 APICAL INDUSTRIES INCORPORATED ICA350 2 2608 Temple Heights Drive Rev N C Oceanside California 92056 970ct02 LOG OF ACCEPTED REVISIONS Apical Industries Incorporated s Instructions for Continued Airworthiness ICA for the Eurocopter AS 350 rotorcraft except for the Airworthiness Limitations Section ALS were reviewed by the Fort Worth Aircraft Evaluation Group FTW AEG and found to contain the applicable requirements specified in Appendix A to Federal Aviation Regulations Part 27 as appropriate and do not contain any incorrect terminology or incorrect references These ICA were found to contain a Cover Page Log of Accepted Revisions Revision Control Procedure and Record of Revisions a List of Effective Pages and a Table of Contents No determination as to correct spelling proper grammar or accuracy of the information was made by the FTW AEG For ICA having a required Airworthiness Limitations Section ALS the ICA will be acceptable when this page has been signed and dated by the FTW AEG and the ALS is approved by the Aircraft Certification Service When the ICA do not require an approved ALS the ICA will be acceptable when thi
9. Accepted Revisions Service Difficulty Reporting Service Difficulty Reporting shall utilize the form included as Attachment 1 Applicability This manual shall be used to maintain the utility floats for the Eurocopter AS 350 Page 9 APICAL INDUSTRIES INCORPORATED ICA350 2 2608 Temple Heights Drive Rev N C Oceanside California 92056 970ct02 1 6 Abbreviations psi pounds per square inch psig pounds per square inch gauge ft lbs foot pounds in lbs inch pounds F degrees Fahrenheit Ae degrees Celsius Hg mercury PRV pressure relief valve P N part number F N find number LH left hand RH right hand 1 7 Precautions The following precaution definitions will be used to indicate the seriousness of the hazard or condition WARNING May be a maintenance procedure practice condition etc which could result in personal injury or loss of life CAUTION May be a maintenance procedure practice condition etc which could result in damage or destruction of equipment NOTE May be a maintenance procedure practice condition etc or a statement which needs to be highlighted 1 8 Units of Measure psi pounds per square inch psig pounds per square inch gauge ft lbs foot pounds of torque in lbs inch pounds of torque F degrees Fahrenheit 2C degrees Celsius 1 9 Distribution This manual will be distributed with each AS 350 Utility Float System purchased It will
10. ES MOLETD FLANGE WALYVE BASE BONDED TO INFLATION TUBE Figure B Valve Removal and Replacement PRV and Topping Valve 25 1 6 5 Table VI TABLE VI TROUBLE SHOOTING FLOAT WILL NOT MAINTAIN OPERATING PRESSURE Probable Cause Hole in fabric Tear in fabric Leaking PRV Leaking topping valve EF Denotes the following if valve leaks at the mounting base return float assembly to factory for repair replacement 25 1 6 6 Table VII TABLE VII SPECIAL TOOLS Apical Part Number Application B 51025 Valve Wrench Removal and installation of all float valves A 51219N Test Adapter Accepts gauge to test float psi APICAL INDUSTRIES INCORPORATED ICA350 2 Page 27 2608 Temple Heights Drive Rev N C Oceanside California 92056 970ct02 25 1 6 7 Table VIII TABLE VII REPAIR MATERIALS REQUIRED Material Equipment Specification and or Vendor Designation Identification L2030UPW Apical Industries Inc LA 4123 Apical Industries Inc Methyl Ethyl Ketone MEK Brush 1 wide Commercial solvent resistant Spatula pusher or dull putty knife 2 1 4 x 4 Apical Industries Inc Cotton cloths Commercial waste clean and soft 25 1 7 Reinstalling Floats a Reinstall float and install shoulder bolts F N 4 washers F N 3 and washers F N 6 through the skid so that they extend past the inboard side of the girt See Figure C After installing all of the bol
11. air retaining capabilities of the float shall be affected All major repairs shall be accomplished at a certified repair depot or factory facilities Repair kit items are as follows Page 20 APICAL INDUSTRIES INCORPORATED ICA350 2 2608 Temple Heights Drive Rev N C Oceanside California 92056 970ct02 TABLE V HELICOPTER FLOAT REPAIR KIT ITEMS Item Quantity 5 inch diameter repair patches 4 4 x 12 inch rectangular patches 6 x 14 inch rectangular patches 8 ounce tube of adhesive with brush Adhesive information sheet Wrench B 51025 Topping up valve B 51209 PRV valve B 51019 4 Instruction sheet Test adapter A 51219N pee oe Ol ee oe ee NO N 25 1 6 1 Cement Bonding PROJECT WASHING ACTIVATING ADHESIVE Urethane Coated MEK 100 MEK 100 LA 4123 or Fabric equivalent a All mixing containers cans stirrers and mixing equipment shall be clean and free of any dirt contamination and dried adhesive b Supplies 1 Cloth lint free undyed or white cotton cut to about 8 square 2 Brush utility size suited to the bond area 3 Solvent containers Safety storage can for solvent Pump plunger can Brush container with cover Rag can with cover Solvent waste can Spent rag can 4 Hand tools Pusher plastic or metal Roller Page 21 APICAL INDUSTRIES INCORPORATED ICA350 2 2608 Temple Heights Drive Rev N C Oceanside California 92056 970ct02 To ensure a proper bond use the chart below to determine the min
12. also be available to float end users or their mechanics or maintenance departments Repair Stations and other companies by request only A log of all recipients of this manual shall be maintained by Apical Any changes to this manual shall be distributed to all recipients Page 10 APICAL INDUSTRIES INCORPORATED ICA350 2 2608 Temple Heights Drive Rev N C Oceanside California 92056 970ct02 1 10 Description of the System and Installation This equipment has been constructed to incorporate an aerodynamic design shape for installation on Eurocopter AS 350 helicopters by means of a reinforced fabric attachment girt making the aircraft completely amphibious and increasing its operational capabilities The utility flotation assembly includes the following Two uninterchangeable floats Each float consists of six separate air holding chambers The chambers are separated by bulkheads made of the same urethane coated nylon as the tube to minimize the loss of buoyancy in the event of puncture or tear Each chamber contains a topping valve for manual inflation and a pressure relief valve PRV to prevent over pressurization The material color is white which provides radiant heat reflection or an optional fabric color is black The float design provides for permanent inflation and full time buoyancy for helicopters assigned to off shore or other over water activities Abrasion resistant chafing material located on the underside of each float and th
13. e reinforcement of the personnel walkways are incorporated to provide additional abrasion protection TABLE I FLOAT CHARACTERISTICS Urethane coated nylon Ship set inflated volume 129 8 cubic feet Ship set inflated buoyancy 8100 pounds Operating pressure 2 00 psi Type of inflation Compressed air or nitrogen Total ship set weight 90 0 pounds approximately Do not mix gases Use either air or nitrogen Page 11 APICAL INDUSTRIES INCORPORATED ICA350 2 2608 Temple Heights Drive Rev N C Oceanside California 92056 970ct02 SECTION 4 0 AIRWORTHINESS LIMITATIONS No airworthiness limitations are associated with this STC Page 12 APICAL INDUSTRIES INCORPORATED ICA350 2 2608 Temple Heights Drive Rev N C Oceanside California 92056 970ct02 5 1 5 2 SECTION 5 0 INSPECTION REQUIREMENTS AND OVERHAUL SCHEDULE Inspection Requirements 5 1 1 Semi Annually Conduct a walk around the LH and RH float assemblies and inspect for damaged areas Any chafing break or hole in the coated fabric is suspect and should be investigated If damaged refer to float field repairs in Section 25 1 CAUTION For the utility float exterior surface care must be taken when using the degreaser from LPS Laboratories LPS Instant Super Cleaner Degreaser or any similar solvent to clean the helicopter rotors or airframe exterior The float exterior surface should be covered with a tarpaulin prior to LPS exposure or flushed off wi
14. ic or component 2 Allow the first coat to air dry completely before proceeding Check dryness with the back of your knuckle 3 Close the adhesive container when not in active use j Apply the second coat of adhesive to the bond area as follows 1 Brush a second uniform coat of adhesive onto the bond area painting the adhesive lightly over the first coat 2 Allow the second coat to air dry completely before proceeding Check dryness with the back of your knuckle APICAL INDUSTRIES INCORPORATED ICA350 2 Page 23 2608 Temple Heights Drive Rev N C Oceanside California 92056 970ct02 3 Close the adhesive container when not in active use k Activate the adhesive by one of the following methods 1 2 To solvent activate Wipe both cemented surfaces lightly but thoroughly with a clean cloth dampened with solvent Join the components per step 1 within 15 seconds of activating To heat activate Direct the flow from a hot air gun over both cemented surfaces Avoid applying too much heat which may melt the coating or component When the adhesive feels tacky immediately proceed to join the components per step 1 l Join the components as follows 1 2 3 4 5 6 Once activated immediately align the two mating surfaces and press together in a wallpapering fashion Use a pusher or roller to expel any entrapped air Press with a pusher or roller over the entire activated area to ensure complete
15. imum size patch to be used if applicable Size of tear Minimum overlap on all sides of damaged area up to 1 8 inch 1 inch 1 8 inch to 2 inches 2 inches 2 inches to 10 inches inside patch 1 inch outside patch 2 inches 25 1 6 2 Holes Cuts Tears And Punctures Up To 3 Inches a Using aclean cloth dry the surface to which the patch is to be applied b If surface cannot be cleaned due to build up of chemicals use sandpaper abrade area to be bonded until achieving a dull appearance CAUTION c Do not touch or handle the cemented areas because oils in the fingers can contaminate the adhesive Check for dryness by touching with the back of the hand or knuckles only d Adhesives have a limited pot life which means that the adhesive will go bad after a specified length of time Adhesives may not be used after their pot life has expired as indicated on the container label Dispose of expired cement appropriately e The adhesive bond develops increasing strength over a period of days CAUTION Cemented components should not be tested or inflated until the initial cure period specified below Product should not be packed until the final cure period as specified below Adhesive Pot Life and Cure Times Supplier Pot Life Initial Cure Apical Industries _LA 4123 f The adhesive bonding process is effected by environmental conditions of temperature and humidity Low temperatures will slow drying and cure times Adhesive bo
16. isual Check of Assemblies and Components 17 IV Testing Equipment Materials Required 20 V Helicopter Float Repair Kit Items 21 VI Trouble Shooting Float Will Not Maintain Operating Pressure 27 VII Special Tools 27 Vill Repair Materials Required 28 LIST OF FIGURES Figure Number Description Page A Placard 20377 1 15 B Valve Removal and Replacement PRV and Topping Valve 27 C Float Attaching Hardware 29 D Utility Float 30 E Float Attaching Hardware 31 Page 8 APICAL INDUSTRIES INCORPORATED ICA350 2 2608 Temple Heights Drive Rev N C Oceanside California 92056 970ct02 1 1 1 2 1 3 1 4 1 5 1 0 INTRODUCTION Scope This manual provides description operation disassembly assembly repair and testing instructions and an Illustrated Parts List for the 20331 Series Utility Helicopter Floats The equipment is manufactured by Apical Industries Incorporated Oceanside California Purpose The purpose of this manual is to maintain the Eurocopter AS 350 Utility Helicopter Float System in peak operating efficiency with the greatest service life Revision Control Procedure All revisions to this document shall be controlled by the Apical Engineering Change Notice procedure Each revision will be indicated with a vertical change bar Each revised page shall display the next revision letter and all pages will be summarized on page 6 List of Effective Pages The final sign off shall be by the Fort Worth AEG Office on page 2 Log of
17. nal reading for every 0 2 inches of mercury that the barometer has fallen If the corrected pressure falls below specified limits inflate the float to 2 0 psig and check for leaks by swabbing the tubes with leak solution using a soft brush Table II b Topping Valve Leakage Test This valve may be checked as part of the float pressure test while it is inflated to 2 0 psig 1 Apply leak solution Table IV with brush at mounting patch to float attachment location If bubbles indicate a leak the float assembly must be returned to the factory for replacement of the valve flange base If leakage is due to valve not seating properly check threads in base on float valve If damaged base return to factory If damaged valve threads remove and replace See Figure B Valve Removal and Replacement c Pressure Relief Valve Test This valve may be checked following conclusion of the Float Pressure Test 1 Apply leak solution Table IV with brush at mounting patch to float attachment location If bubbles indicate a leak the float assembly must be returned to the factory for replacement of the valve flange base Fill the relief valve aperture with clean water Slowly raise the compartment pressure and watch for bubbles indicating that the valve opens Then reduce pressure watching for a cessation of bubbles The valve should open at 4 0 psig 0 25 psig and should close by 3 0 If valve operates improperly apply leak solution
18. nding cannot be performed at temperatures lower than 55 F APICAL INDUSTRIES INCORPORATED ICA350 2 2608 Temple Heights Drive Rev N C Page 22 Oceanside California 92056 970ct02 High humidity may cause moisture to condense on the bond area as indicated by a foggy white appearance on the cement or component Before applying additional cement or before activation flash evaporate the moisture by wiping lightly with additional solvent g Clean the bond area as follows 1 Fold a clean cloth in half then in half again to form a square Dampen the cloth with solvent Squeeze the excess solvent from the cloth back into the pump can screen 2 Wash the bond area by wiping in one direction only to remove all visible contamination and release agents Do not wipe back and forth as this only smears contaminants 3 Refold the cloth as necessary to keep a clean wiping surface Each cloth should give eight wiping surfaces When the cloth is soiled dispose of it and all chemicals properly h Allow the cleaning solvent to evaporate completely before applying adhesive When washing coated fabric do not allow excess solvent to collect at the edges of seams Do not apply solvent to decals or stencil markings whenever possible since they can be removed by the solvent i Apply the first coat of adhesive to the bond area as follows 1 Brush a uniform coat of adhesive onto the bond area rubbing the adhesive firmly into the fabr
19. s And Punctures Up To 2 x 10 Inches Note These instructions are for repairs to fabric tears that are limited to a2 x 10 inch maximum tear curved or straight CAUTION Repair tears by patching both the inside and the outside surfaces of the fabric prior to inflating the float a b Trim off loose threads using scissors Sprinkle a handful of powdered soapstone or talc inside the float opposite the tear area to prevent joining the inside surfaces of the fabric together Using a clean cloth dry all surfaces to which the patches will be applied Thoroughly clean the inside surface of the fabric around the tear and the underside of one of the patches using a cloth dampened with solvent Apply adhesive and activate surfaces as instructed in 25 1 6 2 i j and k above Fold the patch in half lengthwise and pass the patch through the tear and install it cement side up on the inside surface of the float fabric directly under the tear Immediately apply pressure with a hand roller to bond the patch to the inside of the fabric Pressure is important for a good bond Page 25 APICAL INDUSTRIES INCORPORATED ICA350 2 2608 Temple Heights Drive Rev N C Oceanside California 92056 970ct02 to h If surface cannot be cleaned due to build up of chemicals use sandpaper abrade outside surface of area to be bonded until achieving a dull appearance i Thoroughly clean the outside surface of the fabric around the tear and the
20. s page has been signed and dated by the FTW AEG Revision Revision FAA Acceptance Acceptance Accepting Number Date Signature Date AEG Office Page 2 APICAL INDUSTRIES INCORPORATED ICA350 2 2608 Temple Heights Drive Rev N C Oceanside California 92056 970ct02 RECORD OF REVISIONS Revision Issue Date By Revision Issue Date By Number Date Inserted Number Date Inserted Le es eee Page 3 APICAL INDUSTRIES INCORPORATED ICA350 2 2608 Temple Heights Drive Rev N C Oceanside California 92056 970ct02 DETAILS OF REVISIONS REV DATE PAGE _DESCRIPTION APPROVED N C 970ct02 All Initial Release Committee Page 4 APICAL INDUSTRIES INCORPORATED ICA350 2 2608 Temple Heights Drive Rev N C Oceanside California 92056 970ct02 RECORD OF SERVICE BULLETINS S B S S B NO DATE DESCRIPTION Page 5 APICAL INDUSTRIES INCORPORATED ICA350 2 2608 Temple Heights Drive Rev N C Oceanside California 92056 970ct02 LIST OF EFFECTIVE PAGES LIST OF REVISIONS Revision N C 970ct02 LIST OF EFFECTIVE PAGES Title Page Revision No Cover 1 N C Log of Accepted Revisions 2 N C Record of Revisions 3 N C Details of Revisions 4 N C Record of Service Bulletins 5 N C List of Effective Pages 6 N C Table of Contents 7 N C List of Tables and Figures 8 N C Section 1 0 Introduction 9 11 N C Section 4 0 Airworthiness Limitations 12 N C Section 5 0 Inspection Requirements and Overhaul Schedule 13 N C Section9 0 Towing 14 N C Section 11
21. s shall be performed in conjunction with trouble shooting information Table VI during the annual inspection and as part of the float pressure test if replacement or repair of those components was accomplished during overhaul a mercury 0 1 1 Float Pressure Test See Table IV Inflate all chambers of the assembly using shop air to 2 0 psig Inflate in 0 5 psig increments Measure pressure in each compartment with manometer or pressure gauge calibrated in increments not greater than psi connected to topping valve Allow the inflated float to stand for one hour after initial inflation Then check and readjust pressure in each compartment if necessary to 2 0 psi Record temperature and barometric pressure Allow the float to remain undisturbed for 24 hours The maximum allowable pressure drop is 0 50 psig after correction for temperature and barometric variations Record the compartment pressures the temperature and barometric reading at the end of the pressure test Correct for temperature variations by subtracting 0 1 psig for every 3 F rise in temperature or adding 0 1 psig for every 3 F drop Page 18 APICAL INDUSTRIES INCORPORATED ICA350 2 2608 Temple Heights Drive Rev N C Oceanside California 92056 970ct02 5 Correct for barometric conditions by adding 0 1 psig to the final gauge psig reading for every 0 2 inches of mercury that the barometric pressure had increased or subtract 0 1 psig from fi
22. th water if the float exterior surfaces has been exposed to LPS 5 1 2 Annually a Inspect the girt for condition function and security If the girt is damaged in any way see Table III b Conduct the annual float leak test in accordance with Section 25 1 5 and inspect for chafing or damaged areas Component Overhaul Schedule Component Component Time Between Section P N Nomenclature Overhaul 20331 101 _ Float LH 20331 102 _ Float RH Page 13 APICAL INDUSTRIES INCORPORATED ICA350 2 2608 Temple Heights Drive Rev N C Oceanside California 92056 970ct02 SECTION 9 0 TOWING Ground towing must be accomplished utilizing a dolly Page 14 APICAL INDUSTRIES INCORPORATED ICA350 2 2608 Temple Heights Drive Rev N C Oceanside California 92056 970ct02 SECTION 11 0 PLACARDS 11 1 Placard Information Placard P N 20377 1 See Figure A 11 2 Location Mount Placard on instrument panel in plain view of pilot 11 3 Application Placards contain an air curing pressure sensitive adhesive Pry off to remove To install remove paper backing and apply pressure Allow to remain undisturbed for 24 hours WARNING MAXIMUM PERMISSIBLE INDICATED AIRSPEED WITH FLOATS INFLATED IS 120 MPH 104 KNOTS ON HIGH SKID GEAR Figure A Placard 20377 1 Page 15 APICAL INDUSTRIES INCORPORATED ICA350 2 2608 Temple Heights Drive Rev N C Oceanside California 92056 970ct02 SECTION 25 0 FLOAT REMOVAL CLEANING TESTING
23. ts through the skid position the washers F N 6 and lock nuts F N 5 as shown in Figure C Hand tighten all the nuts so that they are secure With a torque wrench tighten the nuts from the forward end of the float to the aft using the specified torque value of 20 25 in Ibs Page 28 APICAL INDUSTRIES INCORPORATED ICA350 2 2608 Temple Heights Drive Rev N C Oceanside California 92056 970ct02 als T LT F N 4 KII Figure C Float Attaching Hardware 25 1 8 Completion of Installation a Inspect utility float installation to ensure all components are secured b Open fill valves and inflate the six float chambers with compressed air to 2 0 psig Inflate chambers gradually to maintain equal volume in each chamber Close fill valves Page 29 APICAL INDUSTRIES INCORPORATED ICA350 2 2608 Temple Heights Drive Rev N C Oceanside California 92056 970ct02 25 2 Ilustrated Parts List See the following figures Figure D and E for part locations Top assembly including LH float and hardware Top assembly including RH float and hardware 3 72 Washer CCC dL ANON 4 36 Shoulder Bolt 20378 5 36 Locknut CS OTISAGIL O 6 72 Washer 90313A104 O 8 12 _ ToppingValve _ B5209 O O 9 12 Pressure Relief Valve ST B 51019 4 _ Figure D Utility Float Page 30 APICAL INDUSTRIES
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