Rolls-Royce Corporation 501-D13 COMMERCIAL OVERHAUL INFORMATION LETERS (COIL) Technical Publications Index

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Vivian Skinner
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1 Corporation 501-D13 COMMERCIAL OVERHAUL INFORMATION LETERS (COIL) Technical Publications Index May

2 101 Metallizing of The Compressor Air Inlet Housing Cancelled * 102 Distribution of Metallizing Handbook Cancelled D13 Engines -- 4th--Stage Turbine Wheel Hub Splines, Rework Distribution of Specialized Chemical Processing Compounds Cancelled 105 Reduction Gear Main Drive Gear -- Inspection and Repair of Loose Cancelled* Damper Rings D13 Front Compressor Oil Seal Lubricant and Lubrication Cancelled 107 Elimination of Electro--Coat Process 501--D13 Overhaul Manual Cancelled 108 Allison Commercial Overhaul Information Letter D13 Engines and Reissued 606 Propellers Short Compressor Blade Pins Cancelled 110 Life Limitation and Time Coding of 501--D13 Engine Parts Cancelled* D13 Rear Turbine Bearing Support Hub Replacement Cancelled* 112 Nickel Brazing of 501--D13 Combustion Liner Assemblies Cancelled 113 Overhaul Repair of 501--D13 Torquemeter Anti--Icing Duct Compressor Front Bearing Retaining Ring Installation Cancelled 115 Overhaul of The --606/--606A Solenoid Stop Assembly Cancelled** D13 Turbine Rear Bearing Cage Cap Bolts Cancelled** 117 Cancelled Prior to Publication 118 Installation and Repair of Fiber Glass Laminate To Spinner Islands Cancelled** Propeller 119 Dielectric Check of Aeormat Element Assembly Cancelled 120 NTS and Condition Rail and Carriage Assembly Adjustments Cancelled 121 Modification of D13 Engines Per Commercial Engine Bulletins Cancelled and D13 Test Cell Inlet Temperature, Inlet Pressure, and Exhaust Pressure Survey Instructions 123 Use of 1000 Volt Meter For Aeromat Element Minimum Resistance Cancelled Check 124 Selection of Reduction Gear Accessory Bearings Cancelled 125 Master Gear Assembly, Overhaul Wear Limits Cancelled 126 Installation/Removal of Thread Inserts Cancelled 127 Cancelled Prior to Publication 128 Shimming of Screw and Pinion, NTS, Condition and Speed Cancelled 129 Use of M--77 Lubricant in Lieu of Low Temperature Lubriplate In Cancelled** Regulator Prop --Condition Carriage , NTS Carriage Cancelled** Revised May 1, 2018 PAGE 1 OF 11

3 131 Inspection of Speed Sensitive Valve Pilot Section Airflow Index Marking of the Speed Gear and Accessory Plate Cancelled 133 Condition Lever Gear and Pinion Screw Tooth Pickup Tolerance and Cancelled Checking Procedure 134 Metallize Repair of Magnesium Oil Pump Gear Pockets Cancelled 135 Overhaul Wear Limits of Governor and NTS Rail Assembly, Overhaul Cancelled** Manual (--606) 136 Leak Test of Pitch Lock and Stop Valve Body Cancelled 137 Beta Transition Tolerance Change Cancelled Regulator Overhaul Wear Limits Cancelled** D13 Bearing Reconditioning Cancelled Propeller Overhaul Cancelled** 141 Regulator Adapter Overhaul Wear Limits Cancelled 142 Cancelled Prior to Publication 143 Rework of Spalls In Ball Races of Blades Cancelled** 144 D13 Turbine Wheel Serration Rebroaching Reinspection of Spare Stock Cuff Sheath Cancelled** Condition Lever Cam Rework Cancelled** 147 Cancelled Prior to Publication 148 Regulator Gear Pump Time Between Overhaul Cancelled 149 D13 1st--Stage Turbine Vane Assembly Wear Cancelled 150 Repair of Oil Transfer Tubes and Mating Holes in the Hub Assembly Cancelled 151 Repair of and NTS and Speed Screw and Pinion Cancelled Assembly Using Insert 152 Use of Nubelon Paint on D13 Compressor Air Inlet Housing Cancelled 153 Repair of Pilot Plate Assembly Cancelled 154 Spinner Repair -- Use of RH and LH Bulkhead Brackets Cancelled** 155 Repair of Regulator NTS Rails Cancelled** 156 Prop Shaft Plating --D13 Engines Cancelled 157 Repair of Torque Cylinder Cancelled** 158 Cancelled Prior to Publication 159 Inspection of and --606A Propeller Preload Bearings, Cancelled** 160 Rework of Screw Holes In Regulator Adapter Plate Cancelled /--606A Hub Assembly/Contact Hamilton Standard for Current Cancelled** Status 162 Accomplishment of Hub Assembly Modifications During Repair Cancelled** /--606A Regulator Adapter Cancelled** Revised May 1, 2018 PAGE 2 OF 11

4 164 Regulator Gear Pump Repair Limits --Flow Versus Time Cancelled 165 Solenoid Valve Assembly --606/--606A Cancelled** Screws Used Used In The Rotary Actuator Assembly Cancelled 167 Salvage Rework of Torque Cylinder Cancelled 168 1st--Stage Turbine Blade Inspection Criteria Cancelled 169 3rd--Stage Turbine Blade Information Cancelled 170 Salvage of D13 Reduction Gear Main Drive Gear, Repair of Prop Spinner Nose Area -- Spacer Install Cancelled** 172 Compressor Tie Bolt Inspection Cancelled 173 Cancelled Prior to Publication 174 Individual Vane Replacements -- Turbine Vane Segments Cancelled 175 Reduction of Wear Tolerance For Hub Assembly, Cancelled** Fixed Island Splines 176 Inspection and Wear Requirements For Adapter Parts Cancelled** 177 Rework of Shutter Drive Pinion Cam Surfaces Cancelled 178 Repair of Rear Turbine Bearing Support Assemblies Cancelled 179 Cancelled Prior to Publication 180 Turbine Vane Assembly Crack Limits Cancelled 181 Turbine Rotor Alignment Procedure Cancelled 182 Turbine Rotor Assembly Procedure Cancelled 183 D13 Engine Torquemeter Housing Inspection Cancelled 184 Addition of Rounded Corner Break To Spanner Nut Cancelled 185 Inspection of Task Rotor and Shaft Assembly Cancelled 186 Cancelled Prior to Publication 187 Fuel Nozzle Spray Tip Cracks Cancelled 188 Application of Protective Coating on Brush Blocks and Slip Ring Cancelled** Assemblies 189 Cancelled Prior To Publication 190 Finish Requirements On Piston and Cylinder Assemblies Cancelled 191 Compressor Vane Assembly, Repair -- Stages 1 through 5 Cancelled 192 Engine Performance and Compressor Condition Interim Overhaul Inspection and Rework Instructions For Stalk Type Turbine Units 194 Turbine Inlet Case Flange Replacement Cancelled* 195 Turbine Vane Support Rework Cancelled* 196 Front and Rear Propeller Cones Cancelled** Revised May 1, 2018 PAGE 3 OF 11

5 197 Compressor Rotor Bearing Spanner Nut Cancelled 198 3rd--Stage Turbine Blade Inspection Cancelled* 199 Reinspection of New Outer Blade Bearing Races Initially Machined Cancelled Incorrectly 200 Turbine Rear Bearing Support Cancelled* 201 Cracks in Spline Tooth of Inner Torquemeter Shaft Inspection and Use of Ratchet Spring Used in Regulator Pitch Lock Cancelled** Valve 203 Procedure To Assure Tight Turbine Rotor Build (Dummy Build) Cancelled Blade Ball Race Spall Rework Cancelled** 205 Turbine Vane Casing Rework Cancelled 206 Gear Pump Flow Limits On Repair Feather Reservoir Assemblies Cancelled** 207 Overhaul of Front Compressor Oil Seal Cancelled 208 Reinspection of Pinion Screw Bearing Races Cancelled 209 3rd-- and 4th-- Stage Turbine Blade Locks -- Replace Cancelled 210 Replacement of Type III Compressor Air Inlet Anti--Icing Vanes, Cancelled Rework of Ball Race Spalls Prop Blades Cancelled** 212 1st--, 2nd--, and 3rd-- Stage Compressor Vanes -- Add Resiweld Cancelled Ref COIL st--Stage Turbine Vane Area Measurement Reinspection of Blade Ball Bearing Retainer Cancelled 215 Inspection of Torque Cylinders and Torque Piston Cancelled 216 Replacement Air Inlet Housings Used with Carbon Compressor Front Seals 217 Lighthouse Pressure of Down--the--Shaft Vented Engines Oversize Rivets For Replacement of Prop Brake Lining Cancelled 219 Compressor Front Bearing Separator Inspection Cancelled 220 Turbine Blade Minimum Length Checking and Cancelled* /--606A Prop Regulator Cover and Housing Bearings and Seals Cancelled** 222 Cancelled Prior To Publication 223 Cancelled Prior To Publication 224 Salvage Repair of the Inside Diameter of the Propeller Hub Cancelled** Socket 225 Compressor Wheel Corrosion Cancelled* 226 Salvage Repair of Prop Regulator Cover Assembly, Cancelled** Contact 227 Ni Cad Plating of Compressor Rotor and Stator Vanes, 501--D13 Cancelled* Engine Revised May 1, 2018 PAGE 4 OF 11

6 228 Platinel Thermocouple Repair By Probe Replacement Cancelled* /606A Regulator Housing and Cover Bearings and Cancelled** Compressor Stator Vane Silver Seal -- New Cement Cancelled 231 Compressor Air Inlet Housing Locating Pins Cancelled 232 2nd-- and 3rd--Stage Compressor Vanes -- Add Resiweld Cancelled 233 Cancelled Prior to Publication 234 Cancelled Prior to Publication 235 Engine -- Post Overhaul Test Performance Calculation Cancelled 236 Repair of The Feedback Screw Hole in the --606/ --606A Propeller Cancelled** Regulator Housing Assembly 237 Inspection and Repair of --606/--606A Torque Cylinder Seal and Cancelled** Bearing Bores 238 Repair of --606/--606A Regulator Adapter Sleeve Cancelled** Repair of --606/--606A Regulator Housing Bearing Mounting Surfaces Cancelled** 240 Installation of Bushings In Transfer Tube Holes of --606/--606A Pitch Cancelled** Lock and Stop Housing Assembly 241 Cancelled Prior to Publication 242 Reinspection of Spare Stock of Bushings Used in Cancelled** --606/--606A Solenoid Valve Assembly 243 Shot Peening of --606/606A Prop Hub Assembly, Torque Cylinders, Cancelled** , , and Shot Peening of --606/--606A Prop Hub Assembly Torque Piston Cancelled** Shot Peening of --606/--606A Prop Hub Assembly Fixed Splines Cancelled** , , and Splined Adapter Cleaning and Inspection Instructions For Alpak Coated 1st--Stage Cancelled* Turbine Blades 247 Cancelled Prior to Publication 248 Reinspection and Rework of Spare Stock of Speed Carriage Cancelled 249 External Scavenge Pump Oil Pump Cover -- Machine Cast Raised Characters as Necessary 250 Reinspection and Rework of Centrifugal Breather Valve Piston Cancelled** Used In --606/--606A Prop Regulator Assembly 251 Repair of Transfer Tube Pad Contact Surface on --606/--606A Cancelled** Regulator Housing Assembly 252 Inspection of Shutter Pinion Mounting Hole in Pitch Lock and Stop Cancelled** Housing Assembly Forward Flange 253 Cancelled Prior to Publication 254 Reinspection of Spare Stock of Prop Hub Torque Cylinder Cancelled** Seal Backup Rings Revised May 1, 2018 PAGE 5 OF 11

7 255 Repair of Adapter Stop Tang Used On --606/--606A Prop Regulator Cancelled** Assemblies 256 Repair of --606/--606A Prop Spinner Nut Assembly and Cancelled** Cancelled Prior to Publication 258 Cancelled Prior to Publication 259 Hub Assembly Torque Cylinder Leakage Inspection Cancelled** 260 Reinspection of Spare Stock of Prop Hub Torque Piston Seal Backup Cancelled** Ring Cancelled Prior to Publication 262 Compressor Stator Vane Seals -- New Cement Cancelled /--606A Prop Phase Synchronizer Transistor Replacement Cancelled** 264 Repair of Model 501 Series Reduction Gear Eyebolt Boss and Hole Cancelled* D13 Alternator Drive Gear -- Inspect for Distortion Thermocouple Probe Replacement, 501--D13, --D13A, --D13D, and Cancelled* --D13H D13 4th--Stage Turbine Wheel Balance Weight Pin Hole Cracks Cancelled 268 Turbine Rear Bearing Support Hub Replace Cancelled 269 Cancelled Prior to Publication 270 Unitized Torquemeter Indicator Assembly, Cancelled 271 Regulator --606/606A Sleeve Assembly, Adapter Cancelled** 272 Reduction Gear Negative Torque Indicator Plunger Oil Filter and Cancelled 274 Replacement of Kelox Inserts in --606/606A Prop Regulator Cover Cancelled** at the Valve Cover Location 275 Inspection of Torque Pistons and Cancelled 276 Use of Industrial Engine Parts In Aircraft Engines Repair of --606/606A Prop Regulator Cover Bearing and Seal Surfaces Cancelled** 278 Repair of Ring Assembly Spinner Mounting Cancelled** 279 Cancelled Prior to Publication 280 Case Hardness Comparison Chart Inspection of Internal Splines of Feedback Drive Gear Cancelled** 282 Epoxy--Polyamide Primer Cancelled 283 Replacement of Cams On Feedback Drive Gear Used On Cancelled** Prop 284 Cancelled Prior to Publication 285 Prop Alternator Quill Shaft Sleeve Cancelled 286 Reduction Gear Main Power Train Bearing and Cage No. 3, Interchangeability Revised May 1, 2018 PAGE 6 OF 11

8 287 Planet Gear and Bearing Assembly --Assembly and Disassembly Cancelled* Procedure 288 Static Mock--up of --606/--606A Propeller Cancelled** 289 Fuel Nozzle Spray Tip Overhaul Engine Cancelled 290 Cancelled Prior to Publication 291 Rework of Ball Race Spalls /606A Prop Master Gear Cancelled** 292 Pitch Lock and Stop Housing Assembly Cancelled** Prop NTS Valve Counterbalance Weight Repair Cancelled** 294 Determining Preload Bearing and Master Gear Shim Thickness Cancelled 295 1st--to 2nd--Stage Turbine Spacer -- Indentation Limit Change --D13 Cancelled Ref Engine Coil /606A Prop Feather Reservoir Assembly Cancelled** 297 Sealing Compound For --606/606A Prop Regulator Slip Ring and Blade Cancelled** Brush Block Assembly 298 NTS Valve Body Assembly Machining Cancelled 299 D13 1st--Stage Turbine Wheel Comparator Cancelled* 300 Replacement of Fuel Hose Fire Sleeving Cancelled * 301 Magnetic Inspection of Springs For --606/606A Prop Regulator and Cancelled** Feather Reservoir Valves Compressor Extension Shaft and Side Gear Backlash Inspection Cancelled* /606A Prop Hub Shell Inspection Cancelled** 304 Regulator Assembly. Valve Cover Plates and Cancelled 305 Cancelled Prior to Publication /606A Regulator Governor Assembly Cancelled** 307 Cancelled Prior to Publication 308 D13 1st--Stage Turbine Blade, Cancelled* 309 Cancelled Prior to Publication 310 Plasma Spray Repair of NTS Rail Assembly Cancelled 311 Restoration of Coating on Flame--Plated Parts Engines Cement and Activator, Epoxy Cancelled 313 Post Overhaul Engine Test Changes For Energy Conservation --D Engine 314 Repair For Air Shutoff Plate Cancelled /606A Prop Hub Shell Cancelled** 316 Inspection Limit --606/606A Fixed Spline Cancelled** 317 Feedback Drive Sleeve, Cancelled** 318 Feedback Drive Gear Repair Cancelled** Revised May 1, 2018 PAGE 7 OF 11

9 319 Effects of Alpak Coating on Restricted Blade Areas Cancelled* /606A Prop Hub Assembly. Machining. Rework of Corrosion on Cancelled** Regulator Nut Threads /606A Propeller Regulator Cover -- Weld Repair Cancelled** 322 Stripping of Chrome and Zinc From Propeller Blades Cancelled** 323 Balance of --606/--606A Prop Blades Cancelled** 324 Adjustment of NTS Rail and Carriage Assembly Regulator Cancelled** 325 Repair of Air Shutoff Plate Cancelled 326 Lubricant For Bendix Rotary Actuator Cancelled /--606A Prop Paint Requirements Cancelled** 328 Prop Special Inspection Requirements Cancelled** 329 Hydraulic Jitter Valve Assembly Overhaul Wear Limits Cancelled 330 Spinner Spraymat Testing -- Uniformity Cancelled** 331 Use of Lead Plate Thread Lubricant On --606/606A Propellers Cancelled** /606A Hub Socket Repair (Spray Steel) Cancelled** 333 Cancelled Prior To Publication 334 Sealing of --606/--606A Prop Blade Cuffs Cancelled** 335 D13 2nd--Stage Turbine Wheel Hub Spline Inspection Cancelled Procedure For Wheels Subject To Requirements of CSL /606A Adapter Sleeve Housing Bearing Diameter A--Repair Cancelled** /606A Propeller Regulator Condition Lever Yoke Cancelled** 338 1st--Stage Turbine Blade Replacement Criteria --501D Series Turbines Cancelled* 339 D13 Turbine Spacer Rim Face Indentation Limits Cancelled* 340 Engine Compressor Rotor Wheel Inspection Criteria Add Cancelled* 341 Reduction Gear Rear Case Mount Repair Cancelled* 342 NTS Actuator Rod Bushing Inspect Cancelled * 343 Potting of Cable Assembly Cancelled 344 Aluminum Compressor Inlet Housing Assembly Cancelled* 345 Ring Assembly -- Blade De--Icing or Cancelled** 346 Maximum Depth Change to --606/606A Prop Regulator Screw and Cancelled** Pinion --NTS Screw and Pinion, and Speed Screw and Pinion. 347 Minimum Thickness Change to --606/--606A Prop Slip Ring Assembly Cancelled** /606A Solenoid Stop Assembly -- Decrease End Cancelled** 349 Special Metallographic Inspection of Used D13 Series 2nd--, 3rd--, and Cancelled 4th--Stage Turbine Wheels to Examine For Carbide Precipitation. 350 Changing of the Maximum Limit On Solenoid Flux Plate, Cancelled 351 Changing Of The Minimum Limit On Speed Screw, Cancelled Revised May 1, 2018 PAGE 8 OF 11

10 352 Adding Wear Limit and Location On Regulator Adapter Sleeve Cancelled Assembly Maximum Wear Depth Permissible On Condition Gear In Area Where Cancelled In Area Where Condition Lever Attaches Change In Limits of Actuator Lever Cancelled /606A Prop Inspection Limits of NTS Rail and Carriage Assembly, Cancelled** and Governor Rail and Carriage Assembly, /606A Prop Pitch Lock and Stop Valve Assembly Cancelled** /606A Prop Blade Outer Race Sets , , and Cancelled** Series Rear Turbine Scavenge Insulator Repair Cancelled* 359 Safety Lockwire Magnetic Corrosion Resistant Inch Diameter Two Piece Sun Gear Cancelled* 361 Compressor Case Splitline Leakage Sealing Compound Cancelled* 362 Fluorescent Magnetic Particle Inspection of Engine Control Rods and Cancelled* Links 363 Prop Assembly --606/606A Removal of Spray Steel from Hub Socket ID Cancelled** 364 Grinding Repair of --606/606A Prop Assembly Cancelled** 365 Bearing Separators -- Fluorescent Penetrant Inspection Cancelled* 366 Overhaul of Fuel Nozzle Spray Tips Cancelled* 367 Painting of --606/--606A Propeller Blades Cancelled** 368 Repair of Fixed Spline Bolt Seal Bore for --606/606A Hub Assembly Cancelled** /606A Prop Regulator Housing Repair Cancelled** 370 Governor Rail and Carriage Assembly Roller Replacement Cancelled 371 Fiberglass Chopped Rovings (Rez--zin)--Alternate Material Cancelled 372 Actithane WC--100 Paint Cancelled 373 Compressor Extension Shaft Shimming Procedure Revision Hand Ointment Anti--Perspirant Cancelled 375 Cancelled Prior to Publication 376 Salvage Repair of --606/606A Pitch Lock and Stop Housing Cancelled** and , Ball Path Area /606A Prop Blade Corrosion Inspection Cancelled** /606A Hub Descaling and Rust Removal Cancelled** 379 Repair of --606/606A Or Governor Body--Dowel Cancelled** Hole /606A Prop Overhaul Manual No. 1AC3 Cancelled** 381 Face Alignment Inspection For Impacted --606/606A Propeller Blades Cancelled** 382 Cuff Classification of --606/606A Prop Blades Using Inspection Table Cancelled** AD Revised May 1, 2018 PAGE 9 OF 11

11 D Engines, Reduction Gear Nose Bearing and Rear Carrier Cancelled* Bearing Plates -- Inspection and Repair 384 Dowel Pin Hole Wear Limit For --606/606A Prop NTS Valve Body, Cancelled** Inspection and Matching of Seal Spacers, , --606/606A Prop Cancelled** Blades 386 Use of Stepanfoam For 606 Blade Cuffs Cancelled** 387 Overhaul Specification OS--P109 For --606/606A Prop Cancelled** 388 Master Gear Assembly, , --606/606A Propeller Assembly Cancelled** /606A Prop Blade Abrasion Strip Installation Cancelled** 390 Inspection and Processing of --606/606A Propeller Assemblies Cancelled** Involved In Impact Damage D13 Series 1st--Stage Turbine Blade -- Furrowing No. 1, Magnetic Inspection of --606/606A Fixed Spline Adapter Cancelled** 393 Inspection Area and Dimension Change of Piston -- Speed Cancelled D13 Repair Turbines -- Inspect Turbine Wheels D13 Turbine Vane Support, Repair Cancelled* 396 Sun Gear, Hub External Spline Repair 501--D13A, D, H, --D22A, Cancelled* --D22C, --D36, T56--A--14LFE, and T56--A--15LFE 397 Permanent Resin Coating -- AMS 3135 Cancelled* /606A Blade Spall Rework Cancelled** 399 Cancelled Prior to Publication 400 Chrome Plating --606/606A Cancelled** 401 Turbine Wheel To Turbine Shaft Fits Change Material Identification of Commercial Turbine Blades For Alpak Purposes /606A Hydraulic Gear Pump For Aeroproducts Pump Cancelled** For Aeroproducts Regulator 404 Cancelled Prior to Publication 405 Cancelled Prior to Publication 406 Cancelled Prior to Publication 407 Turbine Vane Case Weld Material Reduction Gear Box Negative Torque Signal (NTS) Plunger Bore Repair 409 Glass Peening of and Right Angle Tube Sockets Cancelled In Phase Synchronizer 410 Shot Peening of 1st Stage Compressor Wheels, , , No. 6, , , , , and st--Stage Turbine Blade Lock, Revised May 1, 2018 PAGE 10 OF 11

12 412 Compressor Wheel MPI Inspection Critical Shafting Inspection for Grinding Burns Coordinator Control --Assembly Grease Change Compressor Assembly No. 1, Compressor Tie Bolt, Forward End Flange, Repair Commercial Overhaul Information Letter (COIL) Index Planet Gear and Bearing Assembly (TDC) No. 1, Cancelled Prior to Publication 420 Fuel Control Speed Piston O--Ring Seal No. 2, Metco 445NS Replacement for Sprabronze AA No. 3, Reduction Gearbox Eyebolt Cracking in the Eyebolt Boss and No. 2, Mounting Pad Area 423 Rear Carrier Cage Bolt Torque Reduction Gear Housing Starter Drive Shaft Magnetic Oil Seal, No. 1, Removal, Disassembly Cleaning, Inspection, Assembly and Installation 425 Torquemeter Housing Plate Change From Cadmium To Nickel. 426 Rear Turbine Bearing Support Weld Wire and Annealing Process 427 Replacement for Brayco 814 Oil th--Stage Compressor Wheel -- Alternate Repair Method for Hub OD/ID -- Rework 429 Improved Bearing Designs Released to T56/501D Series I, II, and III No. 1, Engine Models 430 Compressor Case Silicone Resin Removal--Rework Anti--Ice Solenoid Valve, P/N Cancelled Prior to Publication 433 Fuel Nozzle Overhaul Procedures No. 1, Compressor Blade Surface Finish, Stages Metco 444, Alternate Method to Metcoloy 2 (Metco 2) Compressor Wheel Plating -- Hydrogen Embrittlement Relief Reissue Propeller Thrust Nut, HVOF Tungsten Carbide Coated Sealing Surface Approval of Alternate Materials for BUNA--N Rubber on the Air Inlet Housing Struts 439 Cast Turbine Front Bearing Support Repair P/N Cancelled 440 Compressor Tie Bolt Plating Compressor Case Blade Track: Application of XPT 268 and Alternates Coatings Revised May 1, 2018 PAGE 11 OF 11

Rolls-Royce Corporation 501-D22 COMMERCIAL ENGINE BULLETIN (CEB) Technical Publications Index

Rolls-Royce Corporation 501-D22 COMMERCIAL ENGINE BULLETIN (CEB) Technical Publications Index Corporation 501-D22 COMMERCIAL ENGINE BULLETIN (CEB) Technical Publications Index May 1. 2018 72-- ENGINE 72--1001 Engine -- Reduction Gear Prop Recommended No Later Than 11--01--66 No. 2, 11--15--68 Brake