ALERT SERVICE BULLETIN INDEX

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1 ALERT SERVICE BULLETIN INDEX NOTE THIS INDEX IS A LIST OF ALERT SERVICE BULLETINS ISSUED. THIS INDEX DOES NOT IDENTIFY WHICH ALERT BULLETINS ARE ACTIVE OR INACTIVE. THE. COLUMN INDICATES THE MAINTENANCE AND/OR OVERHAUL MANUAL CHAPTER/S AFFECTED BY THE RESPECTIVE BULLETIN; OR, THE BULLETIN IS APPLICABLE TO A SERVICE INSTRUCTION (S.I.). PROPRIETARY RIGHTS NOTICE These data are proprietary to Bell Helicopter Textron, Inc. Disclosure, reproduction, or use of these data for any purpose other than helicopter operation is forbidden without prior written authorization from Bell Helicopter Textron, Inc. Newly released Alert Service Bulletins can be viewed and printed by accessing our Service Directives website at This publication supersedes BHT-204B-ASB INDEX dated 1 January 2007 in its entirety. COPYRIGHT NOTICE COPYRIGHT 2008 BELL HELICOPTER TEXTRON INC. AND BELL HELICOPTER TEXTRON CANADA LTD. ALL RIGHTS RESERVED 1 JANUARY 2008

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3 STATUS CODE A = Active A- ( ) = Active (Additional Information) I = Inactive I- ( ) = Inactive (Reason) P = Incorporated in Parts Catalog R = Referenced in Maintenance Manual I = Incorporated in Maintenance Manual P = Incorporated in Parts Catalog S = Superseded (New Bulletin Number) R = Referenced in Maintenance Manual 204B-1 Basic VI Balancing and Track Requirements For Tail Rotor Hub and Blade Assembly, P/N or B-2 Basic VI One-Time Inspection of Tail Rotor Yoke, P/N's or B-3 Basic VI One-Time Inspection of Tail Rotor Slider Assembly, P/N B-4 Basic III One-Time Inspection of Swashplate and Support Assembly P/N , With 200 Hours or Less Component Operating Time 204B-5 Basic Rev B I Assignment of 1000 Hour Retirement Life for Model 204B Float Gear Aft Cross Tube, P/N , and 205A/A-1 Float Gear Cross Tube (Aft P/N ), (FWD P/N ) 1

4 204B-6 Basic VI Inspection of Tail Rotor Hub and Blade Assemblies, P/N , -5, -9, and -15; , -7, -15, and Basic VII 1000 Hour Inspection of the Irreversible Valve Assembly, P/N Basic 204-(04-1)-73-1 Basic IV Grease, P/N , Dated After July, 1973 II Inspection of Main Rotor Blades, P/N (All Dash Numbers) Basic VI Inspection of Tail Rotor Hub and Blade Assemblies, P/N's , -5, -9, and -15; P/N , -17, and Basic I Mandatory Replacement Interval for Tail Rotor Grip Assemblies, P/N and P/N , Is Reduced to 500 Hours Basic VI Inspection of Anti-Torque Silent Chain Assy, P/N Basic IV Inspection of Main Drive Shaft Boot, P/N (04-2)-74-1 Basic III Inspection of Swashplate Scissors Lever Bolts, P/N NAS 464-P8-90 or P/N Basic Rev C Basic II X Inspection, Sealing and Refinishing of Main Rotor Blades, P/N (All Dash Numbers) Replacement of Emergency Exit Decals, and Escape Release Handle Covers 2

5 Basic VII Inspection of Anti-Torque Pitch Change Control Assembly, P/N , Pitch Change Rod, Basic VII Inspection of Anti-Torque Control Chain, P/N Basic II One Time Inspection of Main Rotor Blade Bolt Washer, P/N Basic II Inspection of Stabilizer Bar Outer Tube, P/N / Basic II Stabilizer Bar Tube Assembly, P/N Basic VII Anti-Torque Controls Fairleads, P/N and P/N Basic VII Flight Control Tubes and Bellcranks Basic III Swashplate Support Assembly, P/N Basic Rev B III Replacement of NAS Rotating Control Bolts with Bell Standard Bolts Basic VI Replacement of Tail Rotor Hanger Bearings, P/N , With Basic Basic II I Inspection of Steel Grip Pad on Main Rotor Blade, P/N (All Dash Numbers) 1000 Hour Special Inspection Requirements for Main Rotor Hub Fitting Assemblies, P/N ; Pins, P/N ; and Strap Assemblies, P/N

6 Basic X Replacement of Spacers and Screws Attaching the Emergency Escape Release Handle Covers Basic VI Inspection of Tail Rotor Driveshafts and Removal of Anti- Chafing Tape From the Tail Rotor Driveshaft Cover and the Fin Cover Door Assemblies Basic VII Replacement of Tail Rotor Chain Guard, P/N Basic X Adding Inspection Holes in the L/H and R/H Passenger Door Assemblies Basic V Inspection of Engine Driveshaft Adapter Bolts, P/N , for Loss of Torque Basic S.I. External Cargo Suspension Kit, Decrease of Load Rating Basic I Main Rotor Hub Inboard Fitting, P/N , Reduction of Service Life Basic II Main Rotor Hub Strap Assemblies, P/N , Reduction of Service Life Basic S.I. Replacement of External Cargo Hook Link Assembly, P/N or -5, With New Link Assy, P/N Basic I Main Rotor Hub Strap Pin, P/N , Reduction of Service Life Basic II Main Rotor Hub Assy, P/N (All Dash Numbers), Corrosion Protection of Basic VII T/R Cable and Chain Damper Kit, P/N , Installation of 4

7 Basic I Reduction of Retirement Life of Tension/Torsion Straps, P/N / Basic V Oil and Fuel Filter, P/N , V-Band Clamp T-Bolt, Inspection of Basic IV Zinc Chromate, Thermal Limit Indicator, Addition of Basic I Main Rotor Yoke, P/N (All Dash Numbers), Retirement Life of Basic III Swashplate Support Assembly, P/N , Inspection of Basic II Main Rotor Grip/Blade Bolt Interference on Repaired Grips, P/N Series, Inspection and Rework of Basic II Main Rotor Pillow Block Yoke Attachment Washer, P/N ANA , Replacement of Basic III Main Rotor Mast, P/N /-105, and Main Rotor Trunnion, P/N , Assignment of Retirement Life Basic II Main Rotor Yoke, P/N (All Dash Numbers), Inspection of Basic VI Tail Rotor Grip, P/N (All Dash Numbers), Reduction in Retirement Life Basic I Ground Handling Wheel Gear Assembly, P/N and -15 Forward Support Pin, Replacement of 5

8 Basic IV Spiral Bevel Gear P/N , Inspection of Basic I Strap Assembly, Main Rotor, Tension - Torsion P/N and P/N , Removal From Service Basic VI Tail Rotor Hub Assembly P/N , Removal From Service Basic VI Tail Rotor Gearbox (90 Deg.) Duplex Bearing Set P/N , Replacement Basic Main Rotor Flight Control System Bolts, Inspection of Basic Basic Cargo Hook P/N SP , Warning Plate, Addition of Main Rotor Yoke P/N All, Inspection of Basic Swashplate Outer Ring P/N , S/N SC , Removal From Service Basic Main Rotor Pillow Block Attachment Bolt , Washer S28-3 and Nut EB080, One Time Use of Basic Crew Door Hinge Pins (Jettison Pins) P/N / Basic Tension Torque Strap Retention Pins P/N Basic Tail Rotor Driveshaft Hanger Bearing P/N Basic Tail Rotor Driveshaft Hanger Bearing P/N Basic Swashplate Support P/N

9 Basic Scissor Link to Swashplate Attachment Bolt, Inspection of Basic Oil/Hydraulic Level Indicators P/N /-003/-005/ -007/ Basic Lower Planetary Spider Gear P/N Magnetic Particle Inspection, All Transmission Assemblies of All Part and Dash Numbers Basic Main Rotor Yoke P/N , All Dash Numbers, Removal From Service Basic Cargo Hooks, Breeze Eastern Customer Advisory Bulletin No. CAB , Customer Service Bulletin No. CSB-129 and CSB Basic Tail Rotor Driveshaft Hanger Bearing, P/N One Time Inspection of Basic Main Driveshaft and Tail Rotor Drive System Grease Lubricated Couplings, Over-Temperature Indicators, Installation of Basic Tail Rotor Slider P/N Basic Tail Rotor Blade P/N All, Removal From Service of Affected Serial Numbers, Inspection of Basic Rev B Blade Bolt P/N , Removal From Service of Specific Serial Numbers Basic Main Rotor Yoke P/N Inspection of 7

10 Basic Introduction of New Scheduled Inspection and Conditional Inspection Requirements: Main Rotor Grip P/N / -005/-117 and P/N Grips with Modified Suffix Characters Basic Powertrain Modification on 204B Basic Rev C Tail Rotor Hanger Bearings P/N , Application of Witness Mark Basic Main Rotor Mast /-007/-105, and Main Rotor Trunnion , Change of Retirement Life and Method of Determination Basic Tail Rotor Blades, P/N /-121, Inspection of Basic Main Rotor Blade P/N ALL: Introduction of Daily Wipe Down Inspection and Special 25 Hour Inspection 204B Basic Fin Spar / 089, /-003/-047/-049, /-065 Inspection Basic Basic Main Rotor (M/R) Mast, P/N /-007/-105, Inspection and Retirement Index Number (RIN) Life Reduction Cargo Hook, Onboard Systems P/N Basic Magnetic Brake P/N , One Time Inspection of 204B Basic Clutch Assembly P/N X134296, Assignment of Retirement Life 8

11 204B Basic Pillow Block P/N , Tube Assembly P/N , Strap Fitting P/N , Inspection and Recall of Specific Serial Number Part 204B Basic Main Rotor Head Inboard Fitting , Inspection of Specific Serial Numbers 204B Basic Hour Special Inspection Requirements for Main Rotor Hub Pins P/N /-003/ Basic Main Rotor Grips , Ultrasonic Inspection of Basic Aeronautical Accessories, Inc. ASB No. AA for PC Safety Valve : Valve Stem Over Torque Basic Assignment of a 100-hour Retirement Life for Stabilizer Bar Mixing Lever Bearings P/N KP6A, AN201KP6A, MS20201KP6A, MS , and Scissors Assembly Pivot Bearings P/N KP8A, AN201KP8A, MS20201KP8A, MS Basic Tail Rotor Blade Assembly, Inspection of Basic Cyclic Flight Control Bearing, P/N MS One Time Inspection and Replacement of 9/10

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13 NOTICE The following blank pages are provided for entry of additional bulletins when distributed. These additional bulletins will be included in this index at next revision. Blank Page 1 of 2

14 NOTICE The following blank pages are provided for entry of additional bulletins when distributed. These additional bulletins will be included in this index at next revision. Blank Page 2 of 2