Rolls-Royce Corporation

M250-C20

COMMERCIAL ENGINE
BULLETIN
(CEB)

Technical Publications
Index

October 1, 2013
 Rolls--Royce
COMMERCIAL ENGINE BULLETIN INDEX

Date Revision Date Compliance Compliance

CEB No. Subject Published Number. Revised Requirement Completed

1001 Gearbox Assembly, Starter -- Generator and 07--06--71 2 01--14--72

Fuel Control Gearshafts -- Rework

1002 CECO Fuel Control and Governor -- 05--07--71

External Plug and Lever Replacement

1003 Turbine Assembly, Gas Producer Turbine 10--04--71 1 02--20--76

Second Stage Splined Adapter -- Replace

1004 CECO PTG -- Replace Seal Plugs and 06--12--72

Speed Rotor Screen or Rotor and Screen
Assembly and Rework or Replace Muscles
Valve

1005 CECO Fuel Control -- Replace Speed Rotor 05--19--72

Screen or Rotor and Screen Assembly and
Seal Plugs

1006 Compressor Discharge Air Tubes -- Rework 06--10--71

1007 CECO Power Turbine Governor Wiggle Link 05--05--72

-- Modify

1008 Compressor, New Rotor Assembly -- 02--15--72

Installation Instructions

1009 Compressor Assembly, New #2 Bearing, 11--16--71

Locking Key, Slinger and Nut -- Install

1010 Gearbox Assembly, New Pinion Bearing 04--06--72 1 05--30--72

Cage -- Install

1011 Cancelled Prior to Publication

1012 CECO Fuel Control Pressurizing Valve -- 11--12--71

Replace Glyd Ring Seal

1013 Gearbox Assembly, Inboard Compressor-- 04--13--72 3 08--30--93

to--Gearbox Mounting Inserts -- Replace
With Flanged Studs

1014 Gearbox Assembly, Rework Gearbox Hous- 02--29--72 1 06--13--72

ing to Provide O--Ring at Oil Delivery Tube
Inlet Screen

1015 Cancelled Prior to Publication

1016 Cancelled Prior to Publication

1017 Turbine Assembly, First and Third Stage 04--27--72

Nozzles -- Flow Area Changed

1018 Compressor Assembly, New #1 Bearing Cancelled

Damper and Washer -- Install

M250--C20 INDEX
Revised October 1, 2013 PAGE 1 OF 23
 Rolls--Royce
COMMERCIAL ENGINE BULLETIN INDEX

Date Revision Date Compliance Compliance

CEB No. Subject Published Number Revised Requirement Completed
1019 CECO Fuel Control Wiggle Link -- Modify 05--05--72

1020 Turbine Assembly, External Changes to 08--10--72

Prevent Oil Leakage at the #6 and #7 Sump

1021 CECO Power Turbine Governor -- Provide 06--30--72 1 12--12--72

More Durable Sealing

1022 CECO Fuel Control -- Provide More Durable 06--30--72 2 12--12--72

Sealing

1023 CECO Fuel Control -- Installation of Spring 09--27--72 1 11--09--72

Clip on Start Derichment Adjustment and
Modification of Bypass Valve and Plug

1024 CECO PT Governor -- Diaphragm Cover 11--20--72

and Housing and Insert Assemblies,
Replace

1025 Compressor Assembly, New #1 Bearing Cancelled--

Damper and Spacer -- Install REF:
CEB--1041

1026 CECO PT Governor -- Bypass and 11--20--72

Minimum Ratio Valves, Replace
and Housing and Diaphragm Cover, Modify

1027 CECO Fuel Control -- Fuel Metering Valve 11--20--72

Assembly, Replace and Speed Set Dia-
phragm and Valve Assembly and Housing
and Insert Assembly, Modify

1028 Cancelled Prior to Publication

1029 Cancelled Prior to Publication

1030 Cancelled Prior to Publication

1031 Cancelled Prior to Publication

1032 Turbine Assembly, First--Stage Nozzle 03--07--73 1 10--10--73

Diaphragm -- Replace

1033 CECO Fuel Control Throttle Shaft and 10--25--73

Governor Quadrant and Shaft Assembly --
Inspect

1034 Cancelled Prior to Publication

1035 Compressor Assembly, Rear Diffuser Seals 08--22--73 1 02--28--75

-- Rework

1036 Cancelled Prior to Publication

1037 Cancelled Prior to Publication

M250--C20 INDEX
Revised October 1, 2013 PAGE 2 OF 23
 Rolls--Royce
COMMERCIAL ENGINE BULLETIN INDEX

Date Revision Date Compliance Compliance

CEB No. Subject Published Number Revised Requirement Completed
1038 Power and Accessory Gearbox Assembly, 01--22--76
Check Valve Assembly -- Rework

1039 Gearbox Assembly, Cover Assembly 04--23--73

Bosses -- Rework

A--1040 Fuel System -- Clamp Power Turbine 05--10--73 2 09--01--94

Governor--to--Control Fuel Tube

1041 Compressor Assembly, New #1 Bearing 08--05--73 1 02--20--76

Spring and Washer -- Install

1042 Fuel System, Fuel Pump--to--Control and 11--30--77 1 02--01--78

Fuel Control--to--Pump Bypass Tube
Clamps -- Replace

1043 CECO Fuel Control, Cutoff Shaft -- Reset 02--15--74

1044 CECO Power Turbine Governor -- Speed 07--28--74

Set Cover, Replace

1045 Turbine Assembly, Fourth Stage Turbine 04--23--74 2 12--09--75

Nozzle--Rework

1046 Gearbox Assembly, Torquemeter Shaft 08--29--73 2 08--30--93

Rear Nut Configuration -- Rework

1047 Compressor, Superseded Wheels--Rework 04--23--72 2 02--15--83

for Use with New Configuration

1048 Turbine Assembly, New First Stage Turbine 04--23--74 3 03--15--81 08--31--81
Wheel -- Installation and Reidentification 02--28--82
08--31--82

A--1049 Gearbox Assembly, Lube Oil Filter Housing 03--18--74 2 02--10--82 07--01--82
Assembly -- Rework

1050 Bendix Fuel Control System for Model 08--27--73 1 09--26--75

250--C20 Engines -- Operator Option

A--1051 Dual Element Fuel Pump, Drive Shaft and 09--03--74 4 05--16--94 11--01--89
Shouldered Shaft -- Replace

1052 CECO Fuel Control, Main Cover Assembly 08--30--74

-- Replace

1053 Engine Model 250--C20 Series--Conversion 11--17--75 3 02--15--91

to Model 250--C20B

1054 Turbine Assembly, Second--Stage Nozzle -- 07--01--84 2 02--15--88

Rework

1055 CECO Fuel Control Assembly, Speed Set 10--25--77

Valve Spring --Replace

1056 Bendix Fuel Control, Modification to Cancelled

250--C20B Configuration

M250--C20 INDEX
Revised October 1, 2013 PAGE 3 OF 23
 Rolls--Royce
COMMERCIAL ENGINE BULLETIN INDEX

Date Revision Date Compliance Compliance

CEB No. Subject Published Number Revised Requirement Completed
1057 Cancelled Prior to Publication

1058 CECO Gas Producer Fuel Control, Throttle 10--14--74

Shaft Assembly -- Rework

1059 CECO Power Turbine Governor, Quadrant 10--14--74

and Shaft Assembly -- Rework

1060 Gearbox Assembly, No. 2 1/2 Roller 08--15--75 1 11--30--76

Bearing Assembly -- Replace

1061 Engine, Compressor Bleed Valve Assembly 04--17--75

-- Rework

1062 Turbine Splitline Bolt -- Replace 10--15--75

1063 Fuel System, Governor Pc Tee--to--Fuel Cancelled

Control Tube--Clamp

1064 Turbine Assembly, New Third--stage Wheel 04--25--75

and Power Turbine Support Oil Sump
Cover--Install

1065 Engine, Spark Igniter Lead Clamps -- 03--27--75 2 02--20--76

Replace

1066 CECO MC--40 Governor, Bypass Valve and 06--25--75

Sleeve Assembly -- Rework

1067 Fuel Spray Nozzle, V--Slot Metering Valve -- 07--01--75

Install and Reidentify

1068 Cancelled Prior to Publication

1069 CECO MC--40 Fuel Control, Speed Rotor 03--27--75

Assembly -- Rework

1070 CECO MC--40 Governor, Speed Rotor 03--27--75

Assembly -- Rework

1071 Compressor, New Front Support, First-- 04--17--75

stage Wheel, and Second and Third--stage
Wheel Assembly -- Install

1072 Compressor, No. 1 Bearing Seal -- Rework 11--15--76 3 08--15--85

1073 Power and Accessories Gearbox -- Oil 07--18--75

Filter Inlet Tube Assembly, Replace

1074 Compressor, No. 1 Ball Bearing -- Relieved 11--15--76 1 05--19--78

Outer Race

1075 Autoreignition Control Assembly, Cancelled

Transducer -- Replace

1076 Compressor, Spur Adapter Gearshaft 01--22--76 1 02--25--77

Bearing Inner Race --Add

M250--C20 INDEX
Revised October 1, 2013 PAGE 4 OF 23
 Rolls--Royce
COMMERCIAL ENGINE BULLETIN INDEX

Date Revision Date Compliance Compliance

CEB No. Subject Published Number Revised Requirement Completed
1077 Governor, Power Turbine, Bendix Model 12--12--75 2 11--30--76
AL--AA1 -- Modification to Parts List Number
2524667--2

1078 Turbine, First--Stage Nozzle Shield 12--30--77 1 03--08--10

Assembly -- Rework

1079 Bendix Fuel Control, Main Body Throttle 03--05--76 1 12--23--77

Shaft Bushing (Vespel) -- Replace

1080 Bendix Governor, Drive Body Cover Throttle 03--05--76 1 12--23--77

Shaft Bushing (Vespel) -- Replace

1081 Engine, New Part Number Bendix Governor 12--12--75 1 06--24--76

Assembly for Multi--Engine Applications --
Install and Reidentify

1082 Gearbox, Wet Spline Starter -- Generator 04--29--77 4 04--15--85

Gearshaft -- Install

1083 Power and Accessory Gearbox, Oil Check 08--03--77

Valve Poppet Assembly Replace

1084 CECO Power Turbine Governor, Bypass Cancelled--

Valve and Sleeve Assembly -- Replace REF:
CEB--1093

1085 Engine, No. 1 Bearing Oil Supply Tube and 08--03--77

Right Hand Anti--icing Tube Clamps --
Replace

1086 Bendix Governor, Throttle Stop Lever Travel 12--23--77 2 05--21--79

-- Increase

1087 Gearbox, Oil Pump Cover -- Rework 02--10--77

1088 Compressor, Rear Diffuser Assembly -- Add 02--18--77 4 04--03--85

Bearing Puller Slots

1089 Bendix Fuel Control, Fuel Inlet Filter 12--23--77

Assembly -- Replace

1090 Governor, Power Turbine, Bendix Model 05--12--76 2 09--30--76

AL--AA1 -- Modification to Parts List Number
2524706--1

1091 Turbine, Gas Producer Support and No. 8 07--30--76 3 04--21--78

Bearing Retaining Plate -- Rework

1092 Dual and Single Element Fuel Pumps, Filter 06--24--76 1 09--10--76
Element -- Replace

1093 CECO Power Turbine Governor, Bypass 05--07--76 2 01--25--80 12--01--80

Valve and Sleeve Assembly -- Replace

1094 Turbine, Exhaust Collector Support 11--26--76

Assembly -- Rework

M250--C20 INDEX
Revised October 1, 2013 PAGE 5 OF 23
 Rolls--Royce
COMMERCIAL ENGINE BULLETIN INDEX

Date Revision Date Compliance Compliance

CEB No. Subject Published Number Revised Requirement Completed
A--1095 Fuel System, High Pressure Fuel Filter 06--24--76 3 04--15--82
Assembly -- Install

1096 CECO Governor (Single--Engine Applica- 09--16--76

tions), Throttle Shaft Retainer Washer --
Replace

1097 Fuel System, Governor Pc Tee--To--Fuel 06--01--76 1 11--30--81 06--01--82

Control Tube Clamps -- Add

1098 Gearbox Assembly, Lube Oil Filter Housing 07--30--76 6 04--15--13

and Pressure Oil Pump Body -- Rework

1099 Turbine, Power Turbine Support and Seal 04--07--77 4 06--01--79

Assembly -- Rework

1100 Compressor, Front Bearing Housing 01--31--77 4 08--31--96

Assembly -- Rework

1101 Fuel System, Check Valve Assembly -- Add 05--06--77 1 11--05--77

1102 Turbine, Power Turbine Support Oil Sump Cancelled

Cover Assembly -- Rework

1103 Bendix Fuel Control, Enriched Acceleration 09--01--76

Flow Schedule -- Incorporate

1104 Fuel System, High Pressure Fuel Filter 07--31--78 Within 30

Element -- Inspect Days From
07--31--78

1105 Gearbox, Power and Accessory, Cover 04--10--79 4 02--15--93

Assembly Torquemeter Shaft Bore Bushing
-- Add

1106 Bendix Power Turbine Governor, Throttle 09--10--76 1 01--21--77

Shaft -- Inspect (One--Time)

1107 Compressor, Bleed Valve Retainer Plate -- 11--15--76

Rework

1108 CECO MC--40 Power Turbine Governor 10--14--77

Reset Piston and Sleeve -- Rework/Replace

1109 Bendix Fuel Control, Governor Spring -- 12--23--77

Replace

1110 Compressor, Common 250--C20 and C20B 03--25--77

Configuration -- Modification

1111 Bendix Fuel Control, Ratio Lever Assembly 11--05--77

-- Replace

1112 Sundstrand Single Element Fuel Pump, 03--30--78 2 08--15--80 09--30--80

Drive Shaft Stop -- Add

M250--C20 INDEX
Revised October 1, 2013 PAGE 6 OF 23
 Rolls--Royce
COMMERCIAL ENGINE BULLETIN INDEX

Date Revision Date Compliance Compliance

CEB No. Subject Published Number Revised Requirement Completed
1113 Turbine, Power Turbine Rotating Labyrinth Cancelled--
Seal -- Rework REF: CEB
1127

1114 Turbine, Slotted Third Stage Wheel -- Cancelled--

Rework REF:
CEB--
A--1174

1115 Engine, Anti--Icing Valve Poppet Seat Screw 03--31--77

-- Special Inspection

A--1116 Engine, Compressor Bleed Valve Strainer 03--31--77 2 02--01--95 Not to

Assembly -- Add Exceed 90
days from
3--31--77

1117 TRW Fuel Pump Assembly, Main Drive 09--23--77

Shaft Spacer -- Add

1118 Power and Accessory Gearbox, Fuel 10--28--77 1 03--31--78

Control and Oil Pump Spur Gearshaft --
Rework

1119 Turbine, Third Stage Wheel Natural Cancelled--

Frequency -- Check REF: CEB
A--1174

1120 Turbine, Power Turbine Outer Coupling Nut 11--30--77 2 04--30--85

-- Replace

1121 Cancelled Prior to Publication

1122 Gearbox, Housing and Cover Oil Pressure 08--30--79 6 12--03--12

Ports Helical Coil Inserts ---- Add

1123 Cancelled Prior to Publication

1124 Engine, Gas Producer Turbine Forward 05--31--79 1 06--15--79

Labyrinth Seal--Replace

1125 Engine, New Part Number Bendix Governor 04--10--78

Assembly for Multi--Engine Applications --
Install and Reidentify

1126 Auto Reignition Control, Modification Kit 11--01--77

-- Install

1127 Turbine, Power Turbine (N2) Rotor -- 11--30--77 4 05--10--88

Modification

1128 Turbine, No. 5 Oil Bellows Seal Assembly -- 11--30--77 1 05--14--78

Replace

1129 Bendix Governor, Pneumatic Circuit -- One 10--31--77

Time Inspection and Cleaning

M250--C20 INDEX
Revised October 1, 2013 PAGE 7 OF 23
 Rolls--Royce
COMMERCIAL ENGINE BULLETIN INDEX

Date Revision Date Compliance Compliance

CEB No. Subject Published Number Revised Requirement Completed
1130 Bendix Power Turbine Governor, Drive 06--16--78 2 04--15--80
Spline Coupling -- Replace

1131 Gearbox, Power Accessory Oil Filter Cap -- 03--09--79

Replace

1132 Gearbox Oil Check Valve -- Replace 09--29--79 2 02--15--80

1133 Gearbox, Power--Accessory Cover 04--28--79

Assembly Pinion Gear Bearing Cage --
Replace

1134 Cancelled Prior to Publication

1135 Gearbox, Power--Accessory Cover 04--06--79 1 09--30--82

Assembly -- Replace

1136 Turbine, Second Stage Turbine Wheel and 02--28--79 1 04--30--81

Splined Adapter -- Replace

1137 Engine Fuel System, Bendix--To--CECO 10--05--78 1 07--30--81

Conversion -- Operator Option

1138 Engine Fuel and Control -- Fuel Control and 08--15--80 2 06--15--98
Governor Assemblies Screened Orifices --
Replace

1139 Engine, Compressor No. 1 Bearing Oil 05--01--79 1 08--15--79

Pressure Reducer -- Replace

1140 Engine, Compressor Bleed Valve Piston 10--30--78

and Retainer Plate -- Replace

1141 Engine, Gearbox Power Train Drive Gear Cancelled 06--30--97

Bearing Journals -- Modify by Adding
Grooves

1142 Turbine, Power Turbine Shaft Shield -- 03--09--79 2 03--15--80

Replace

1143 Customer Option Engine, Quick--Discon- 01--31--79 8 10--18--99

nect Drain Plugs -- Install

A--1144 Fuel System, High Pressure Filter Element 11--14--79 5 09--01--94 10--01--82
and Bypass Valve -- Replace

1145 TRW Fuel Pump, Fixed and Pressurized 10--16--78

Bearings -- Rework

1146 Engine, Fuel and Control Start--Acceleration 01--30--80 2 10--15--82

Flow Schedule Adjuster -- Add

A--1147 Engine, Power and Accessory Gearbox 05--28--79 8 08--13--99

Cover and Housing Assemblies Self--Lock- Supersede
ing Threaded Inserts -- Add d

M250--C20 INDEX
Revised October 1, 2013 PAGE 8 OF 23
 Rolls--Royce
COMMERCIAL ENGINE BULLETIN INDEX

Date Revision Date Compliance Compliance

CEB No. Subject Published Number Revised Requirement Completed
1148 Turbine, Third Stage Wheel Shroud Slots -- Cancelled--
Rework REF:
CEB--
A--1174

1149 Turbine, Third Stage Nozzle -- Rework 08--31--79 1 10--15--79

1150 Gearbox Assembly -- PTO Helical 01--18--80 7 06--01--84

Gearshaft Assembly -- Replace

1151 Cancelled Prior to Publication

1152 Cancelled Prior to Publication

1153 Tool, TRW Fuel Pump Shaft Seal Assembly 08--15--79

-- Modify

1154 Gearbox, Oil Filter Differential Pressure Kit 08--30--80 6 10--31--94

-- Option

1155 Engine, Power Turbine Support and Seal 03--31--81 1 03--15--82

Assembly -- Extend Inner Cross Section of
Scavenge Oil Drain Strut

1156 Bleed Valve Assembly Gasket -- Replace 01--25--80

1157 Engine, Power and Accessory Gearbox Cancelled--

PTO Gearshaft REF:
CEB--1150

1158 Engine, Power Turbine Outer Coupling Nut 10--15--79 3 04--30--85

-- Rework

1159 CECO, Fuel Control Bypass Valve O--Ring 06--30--80

Retainer -- Add

1160 Cancelled Prior to Publication

1161 Engine, Turbine Assembly No. 6 and 7 04--15--80 2 02--28--81

Bearing Pressure Oil Nozzle Assembly --
Replace

1162 Bendix Fuel Control Assembly -- Ratio 05--15--82 1 05--31--83

Lever and Bellows Assemblies with
Improved Wear Characteristics

1163 CECO, Fuel Control and Governor Pc 03--07--80 1 06--15--80

Bellows Assemblies -- Replace

1164 Sundstrand, Fuel Pump and Filter Assembly 12--30--82 2 10--15--85 01--01--85
(Single Element) Driveshaft and Gear Set -- 10--31--85
Replace

1165 Gearbox -- Spare Accessory Drive Gear 02--01--80 7 12--03--12

(Vacuum/Hydraulic Pump) Removal

M250--C20 INDEX
Revised October 1, 2013 PAGE 9 OF 23
 Rolls--Royce
COMMERCIAL ENGINE BULLETIN INDEX

Date Revision Date Compliance Compliance

CEB No. Subject Published Number Revised Requirement Completed
1166 Gearbox, Housing and Cover Oil Scavenge 08--30--80 4 12--03--12
Ports Helical Coil Inserts -- Add

1167 250--C20B to 250--C20 and 250--B17B, 05--31--94 3 06--05--07

--B17C to 250--B17 Conversion

1168 Gearbox -- Cover Assembly -- Replace 02--15--81 3 02--20--89

Pinion Bearing Cage with Cage of New
Harder Material

1169 Cancelled Prior to Publication

1170 Bendix Power Turbine Governor -- Inspect 01--12--81 4 08--15--85

Drive Shaft and Add Epoxy Bonding to Tor-
sional Spring Drive Assembly

1171 Engine, Compressor No. 1 Bearing and 03--15--81 2 07--01--84

Retaining Nut -- Replace

1172 Combustion Liner Assembly--Dome Sub-- 04--30--81

Assembly of Hastelloy For Service Repair

A--1173 Engine, Turbine Inner and Outer P. T. Shafts 04--15--81

-- Replacement

A--1174 Engine, Turbine Assembly, Third Stage 04--20--81 6 08--01--89

Wheel -- Replace

1175 Engine, Fuel and Control -- Power Turbine 06--30--85

Governor Assembly, Modify By Adding Py
Fitting and Nut

1176 Engine, Turbine P. T. Inner and Outer Shafts Cancelled--

and Inner Coupling Nut Electroless Nickel REF:
Plate Instead of Sermetel W or Alseal 500 CEB--
A--1224

1177 Engine Gearbox, Inspect Oil Delivery Tube 07--15--81 1 04--15--83

(Piccolo) for Burrs Once Only

1178 Engine, Turbine, P. T. Inner Shaft -- Replace 12--15--81 2 12--02--85

by Shaft with Increased Pilot Diameter OD

1179 Cancelled Prior To Publication

1180 Cancelled Prior To Publication

1181 Engine, Turbine, Assembly, Modify 10--15--82

250--C20F For Series II Commonality

1182 Cancelled Prior To Publication

1183 Anti--Rotation Pin -- Replace 04--15--84 1 01--15--91

1184 Cancelled Prior To Publication

M250--C20 INDEX
Revised October 1, 2013 PAGE 10 OF 23
 Rolls--Royce
COMMERCIAL ENGINE BULLETIN INDEX

Date Revision Date Compliance Compliance

CEB No. Subject Published Number Revised Requirement Completed
1185 Engine, G. P. Turbine Support--Power 06--15--84
Turbine Support and Seal Assy -- Break
Edge Hole

1186 Engine and Gearbox Conversion 250--C20F 05--02--83

(Bendix Fuel System) to 250--C20B

1187 Engine and Gearbox Conversion 250--C20B 06--30--82 2 09--01--91

(Bendix Fuel System) to 250--C20F

1188 Engine and Gearbox Conversion 250--C20B 12--30--83

to 250--C20J

1189 Engine and Gearbox Conversion 250--C20J 04--01--83

to 250--C20B

1190 Engine and Gearbox Conversion 250--C20F 08--01--83 1 01--15--84

(Bendix Fuel System) to 250--C20J

1191 Engine and Gearbox Conversion 250--C20J 06--15--84

(Bendix Fuel System) to 250--C20F

1192 Engine -- Gearbox Power Take--Off Gear- Cancelled

shaft Retaining Ring -- Add

1193 Cancelled Prior To Publication

A--1194 Engine Fuel and Control, Sundstrand Single Cancelled--

Element--Fuel Pump -- Inspect Drive Shaft REF:
CEB--1212

1195 Engine, Fuel and Control, CECO Power 04--15--83 1 08--30--84

Turbine Governor Assembly -- Replace
Reset Piston and Piston Sleeve

1196 CECO, P.T. Governor, Housing and Insert 03--15--83 1 04--15--83

Assembly -- Repair Replacement of Mini-
mum Flow Valve Guide and Seat Assembly

1197 Turbine, Gas Producer--Rotor Assembly -- Cancelled-- 01--01--87

Replace REF:
CEB--1212

1198 Bendix Fuel System, Pr Pressure Tube As- 10--15--82 2 04--30--85

sembly Governor to Fuel Control -- Add Two
Clamping Arrangements

1199 Engine, Gearbox Lubrication System -- 09--30--82 1 11--15--83

Change Oil Pump Attachment Bolts

1200 Engine, Fuel and Control, Bendix Power 08--01--88

Turbine Governor, -- Incorporation of
Governor Body Access Window

1201 Engine, Gearbox, Bearings Manufactured 09--30--82 1 12--15--83

by Marlin--Rockwell Corp. -- Inspect Separa-
tor

M250--C20 INDEX
Revised October 1, 2013 PAGE 11 OF 23
 Rolls--Royce
COMMERCIAL ENGINE BULLETIN INDEX

Date Revision Date Compliance Compliance

CEB No. Subject Published Number Revised Requirement Completed
1202 Cancelled Prior To Publication

1203 Engine Compressor Assembly, Special 01--30--83

Inspection of 6th Stage Compressor Wheels

1204 Engine, Turbine, Retaining Ring Nos. 6 and 10--15--82 1 04--15--83

7 Bearings -- Replace

1205 Cancelled Prior To Publication

A--1206 Engine Fuel and Control, Bendix Fuel Con- 10--15--82 10--15--83
trol Assemblies and Power Turbine Gover-
nor Assemblies -- Inspect Bushing Assem-
blies

1207 Engine, Fuel and Control, Bendix Fuel Con- 05--02--83 2 03--10--88
trol and Power Turbine Governor Assem-
blies -- Add Filter Fittings

1208 Cancelled Prior To Publication

1209 Cancelled Prior To Publication

1210 Cancelled Prior To Publication

A--1211 Engine, Quick Disconnect Magnetic Plugs -- 01--15--83 3 10--15--96

Inspect Locking Pins and Insert Slots for
Wear

1212 Engine, Turbine Assembly, Gas Producer 02--15--85 3 01--15--90 02--28--90

Rotor Assembly -- Replace Tie Bolt of 02--28--92
Improved Strength 02--28--94

1213 Air System, Compressor Bleed Valve Assy Cancelled

-- Modify

1214 Engine Fuel and Control, Fuel Control and 03--15--84 2 07--15--87
Governor Assemblies -- Modify

1215 Engine Conversion, 250--C20B to 03--01--85 1 11--01--88

250--C20S

1216 Cancelled Prior To Publication

1217 Cancelled Prior To Publication

1218 Engine, Gearbox Assembly, Scavenge Oil 04--22--83

Pump Cover Assembly -- Add Loctite to
Gearshafts

1219 Engine--Turbine New #5 Bearing Oil Seal Cancelled

1220 Cancelled Prior To Publication

1221 Engine -- Power Turbine Support Oil Sump 12--16--85 5 09--30--93

Cover Assembly -- Modify

M250--C20 INDEX
Revised October 1, 2013 PAGE 12 OF 23
 Rolls--Royce
COMMERCIAL ENGINE BULLETIN INDEX

Date Revision Date Compliance Compliance

CEB No. Subject Published Number Revised Requirement Completed
1222 Cancelled Prior To Publication

1223 Turbine Assembly, Turbine Nozzle Shield 02--15--84 1 05--15--86

Positioning Plug -- Modify

A--1224 Engine, Turbine Assembly, Inner and Outer 10--16--85 4 11--24--08 08--31--92
Power Turbine Shafts Thicker Electroless 08--31--95
Nickel Plate

1225 Model 250 Engine or Module Conversion 09--30--85 7 05--04--09

Authorization

A--1226 Engine, Accessory Gearbox Assembly, 03--15--87 5 03--01--10

Through Bolt Retention of Idler Gears

1227 Cancelled Prior to Publication

1228 Engine, Gearbox Assy, New Accessory 11--20--85

Drive System Bearing

1229 Cancelled Prior to Publication

1230 Cancelled Prior to Publication

1231 Cancelled Prior to Publication

1232 Cancelled Prior to Publication

A--1233 Engine, Fuel, Lube and Air System, 02--15--88 3 02--01--10 10--31--88
Improved Strength Pc Filter Housing 04--30--89
10--31--89
04--30--90

A--1234 Engine -- Fuel and Air System -- Pc Scroll to 06--23--86 3 04--15--92 07--31--86
Pc Filter Tube Assy -- Inspection

1235 Cancelled Prior to Publication

1236 Cancelled Prior to Publication

1237 Cancelled Prior to Publication

1238 Cancelled Prior to Publication

1239 Engine, Turbine Assembly, U Ring Gasket 04--15--86 1 01--15--98

1240 Engine, Fuel and Control, CECO MC--40 08--15--87

Fuel Control Assembly -- Leak Test For
Start Regulator Valve and Revisions To
Final Test Procedure

1241 Engine, Accessory Gearbox Oil Filter 07--01--89 1 04--15--93

Housing, Add Bronze Bushing to the Oil
Out Port

1242 Engine Conversion, M250--C20B to 12--18--87 2 09--17--12

M250--C20R/2

M250--C20 INDEX
Revised October 1, 2013 PAGE 13 OF 23
 Rolls--Royce
COMMERCIAL ENGINE BULLETIN INDEX

Date Revision Date Compliance Compliance

CEB No. Subject Published Number Revised Requirement Completed
1244 Engine, Fuel and Control, Bendix Power 04--29--88
Turbine Governor -- Increased Pressure
Bench Calibration

1245 Engine, Fuel and Control, Allied/ 06--15--88 2 03--01--89

Bendix Fuel Control -- Increased Maximum
Flow Stop

1246 Cancelled Prior To Publication

1247 Cancelled Prior To Publication

1248 Cancelled Prior To Publication

1249 Engine, Fuel and Control, Conversion of 09--30--91

Model 250--B17 Series Allied/Bendix Fuel
Control, Allison P/N 23007870, (Bendix P/N
2524654--21) to a Configuration Useable on
250--C20S Engines

1250 Cancelled Prior To Publication

1251 Engine, Turbine Assembly, New Optimized Cancelled

Power Turbine Sump Clearances

1252 Engine, Fuel and Control, CECO Fuel 07--01--88

Control System, Replace Laminated Shims
With Solid Shims

A-1253 Engine, Turbine Assembly, First and 06--01--88 4 05--21--04

Second Stage Turbine Nozzles -- Modify for
Incorporation of an Internal Energy Absorb-
ing Ring

A-1254 Engine, Turbine Assembly, Gas Producer 06--01--88 3 05--21--04

Support, Modify For Incorporation of an
Internal Energy Absorbing Ring

A-1255 Engine, Turbine Assembly, Internal Energy 06--01--88 4 09--29--04

Absorbing Ring -- Add

1256 Engine, Compressor Bleed Valve Modifica- Cancelled--

tion from 250--C20B To 250--C20R/1 or REF:
250--C20R/2 CEB--1268

1257 Engine, Engine Assembly Shipping 11--01--88 2 04--15--93

Container -- Modify

1258 Cancelled Prior To Publication

1259 Cancelled Prior To Publication

1260 Engine, Air System, Bleed Valve, Improved Cancelled

Valve Stem Bushing -- Install

1261 Engine, Fuel and Control -- Fuel Pump, 07--01--88 1 12--17--07

Machine Fuel Pump Gear Housing

M250--C20 INDEX
Revised October 1, 2013 PAGE 14 OF 23
 Rolls--Royce
COMMERCIAL ENGINE BULLETIN INDEX

Date Revision Date Compliance Compliance

CEB No. Subject Published Number Revised Requirement Completed
1262 Engine Turbine Assembly, First--Stage 11--15--90 2 04--15--93
Nozzle Diaphram Locating Key Welds --
Modify

1263 Engine, Accessory Gearbox, Install New Cancelled--

Pressure Oil Tube REF:
CEB--1288

1264 Engine, Fuel and Control, 250--C20B Fuel 04--29--88

Control Unit Conversion To 250--C20R/1
and C20R/2 Configuration

1265 Engine, Air System, Additional Clamping 07--01--89 07--01--90

Requirements, 250--C20S Pneumatic Tubes

1266 Engine, Accessory Gearbox Assembly, 01--31--89 1 06--15--94

Centrifugal Breather Gear, Improved Config-
uration

1267 Engine, Turbine Assembly, Second Stage 04--01--89

Turbine Wheel, Reduced Diameter Balance
Piston Seal Knife

1268 Engine, Compressor Bleed Valve Modifica- 06--01--88

tion From 250--C20 to 250--C20R Series

A--1269 Engine, Compressor Assembly, Improper 10--01--88 12--01--88

Clamping of the Number One Bearing Pres-
sure Oil Tube Assembly

1271 Cancelled Prior to Publication

A--1272 Engine, Fuel and Control, Inspection of 08--01--88 2 09--1--94 10--01--88

Certain Bendix Fuel Control Bellows 07--01--89
Assemblies

1273 Engine, Turbine Assembly, Internal Energy 03--01--89

Absorption Ring (Series III, P/N 23031865),
Rework and Reidentify For Series II Use

1274 Engine, Gearbox Assembly, Installation of 09--30--90 3 10--31--96

New 3 and 4 Roller Bearings

1275 Engine, Gearbox Assembly, Spur Adapter 03--01--89 1 08--01--89

Gearshaft, Modify 2 1/2 Bearing Guide

1276 Engine, Turbine Assembly, Gas Producer 05--01--89 3 06--15--93

Support, Addition of Brazed or Welded Wear
Pads

1277 Engine, Gearbox Assembly, Starter 06--01--89

Generator Gearshaft, Modify Spline
No--Go Gage

1278 Cancelled Prior To Publications

1280 Engine, Turbine Assembly, New Gas Pro- Cancelled

ducer Turbine Tiebolt Spanner Nut

M250--C20 INDEX
Revised October 1, 2013 PAGE 15 OF 23
 Rolls--Royce
COMMERCIAL ENGINE BULLETIN INDEX

Date Revision Date Compliance Compliance

CEB No. Subject Published Number Revised Requirement Completed
A--1281 Engine Control System, Bendix Power 04--01--89 3 04--15--92
Turbine Governor, Inspect Py Port Casting
Area

1282 Engine, Tooling, Power & Accessories 06--01--89

Gearbox Bearing Removal Puller Kit, Modify

A--1283 Engine, Turbine Assy., Alseal Coating of 02--28--90 7 02--29--96 08--31--92

Power Turbine Inner and Outer Shafts 08--31--95

1285 Engine, Fuel and Control, Pc Air Tube, Cancelled

Replace

1287 Engine, Air System, Bleed Valve, Improved 10--15--90 2 04--15--93

Valve Stem Bushing -- Install

1288 Engine, Accessory Gearbox, Install New 04--30--90 1 06--21--91 12--31--90

Pressure Oil Tube

A--1289 Engine, Fuel and Control, Bendix P.T. 04--15--92

Governor Removal of Py Accumulator

1290 Aviall Recall of Certain Bendix Power 03--15--90 1 10--15--91 12--31--91

Turbine Governors

1291 Engine, Combustion Liner, Rework Cancelled

A--1292 Engine, Turbine Assembly, Turbine Spline 04--30--90 1 07--15--91

Adapter P/N 6898784, Replace Certain
Suspect Adapters

A--1294 Engine, Fuel and Control -- Replace P/N 07--20--90 2 10--31--96 06--30--91
6848471 and 23051141 Tube Assemblies

A--1295 Engine, Fuel and Control, Fuel Control 04--15--91 2 02--15--92 04--01--93
Assembly Improved Throttle Return Spring
-- Add

1296 Cancelled Prior To Publication

1298 Engine, Gearbox Assembly -- Turbine 12--15--92 1 01--26--01

Pressure Oil Fitting -- Add Seal

1299 Engine, Turbine Assembly -- Combustion 09--01--91 2 06--18--98

Liner -- Rework

1300 Chandler Evans MC40 Power Turbine 03--15--92

Governor and Fuel Control Assembly,
Replacement of All Diaphragms

1301 Cancelled Prior to Publication

1302 Engine, Fuel and Control, Replacement of 07--01--91 1 12--15--91

Throttle Balance Spring and Maximum Fuel
Flow Quadrant

M250--C20 INDEX
Revised October 1, 2013 PAGE 16 OF 23
 Rolls--Royce
COMMERCIAL ENGINE BULLETIN INDEX

Date Revision Date Compliance Compliance

CEB No. Subject Published Number Revised Requirement Completed
1303 Engine, Compressor Assembly, Release of 03--15--92 3 10--31--96
New Coatings for Previously Uncoated
Compressor Wheels -- Rework

A--1304 Engine, Air System, Bleed Valve, Removal 10--15--91 04--30--92

of Plasma Sprayed Coating from Bore

A--1305 Bendix Main Fuel Controls, Verification of 09--15--91 1 02--15--92 01--01--92

Maximum Fuel Flow Setting

1306 Engine, Fuel and Control, Conversion of 09--30--91

Model 250--B17 Series Allied/Bendix Fuel
Control, Allison P/N 23007871, (Bendix P/N
2524661--21) to a Configuration Useable on
250--C20S Engines

1307 Inspection of Oil Filter Tube Assembly, P/N 11--15--91

6876925A for Proper Engagement

1308 Engine, Compressor Assembly, Compres- 12--20--91

sor Case P/N 6877410, Replace Certain
Suspect Compressor Cases

1309 Engine, Compressor Assembly, Release of Cancelled

New Compressor Discharge Tubes --
Replace

1311 Engine, Fuel, Lube and Air System, 06--15--92 1 09--15--96

Release of New Anti--Icing Valve, Modify

1312 Engine, Combustion Assembly, Compressor 03--15--92 1 09--06--06

Air Discharge Tube 23035281, Replace

A--1314 Bendix Main Fuel Controls Use on Model Cancelled

250 Series Engines -- Application of NYE
Synthetic Oil 608 to Beryllium Copper PC
Bellows Assembly

1316 Engine, Fuel and Control, Release of New 02--15--93 1 12--07--93

Fuel Control With Stronger Bypass Valve
Cover Retaining Screws -- Modify

1317 Engine, Compressor Assembly, Compres- 08--31--93

sor Case, New Material Plastic, Add

1318 Engine, Ignition System, Change Routing of 01--31--93 1 03--15--94

Igniter Lead to Eliminate Interference --
Modify

A--1319 Engine, Fuel, Lube and Air Assembly, Fuel 07--30--92

Hose Assembly 23005205, Replace

1320 Engine, Power and Accessory Gearbox 01--25--93

Housing Assembly, Rework to Remove
Web Wall Material From Casting Housing

1321 Engine, Compressor Assembly, Release of 06--30--93 2 05--31--94

New Compressor Rotor Assembly -- Modify

M250--C20 INDEX
Revised October 1, 2013 PAGE 17 OF 23
 Rolls--Royce
COMMERCIAL ENGINE BULLETIN INDEX

Date Revision Date Compliance Compliance

CEB No. Subject Published Number Revised Requirement Completed
1322 Air Logistics Recall of Certain Bendix Power 12--20--92 12--31--94
Turbine Governors and Fuel Controls

A--1323 Engine, Fuel and Control, Replace P/N 04--15--93 3 06--15--97

6848471 Tube Assemblies

1324 Engine, Turbine Assembly, Release of New 07--30--93

Horizontal Fireshield and Access Panel --
Rework

1325 Engine, Compressor Assembly -- Release 12--31--93 5 08--15--11

of New Compressor Coupling Adapter

1326 Engine, Turbine Assembly, Release of New 05--31--94

No. 8 Bearing and Retaining Plate

A--1327 Engine Assembly, Fireshield Retaining Nut 10--30--93

Torque

A--1328 Engine, Compressor Assembly, Spur 03--31--93

Adapter Gearshaft Assembly P/N
23034784, Inspection

A--1329 Engine, Fuel and Control -- Fuel Control Bel- 11--18--93 4 10--09--01
lows -- Replace

1330 Engine, Fuel and Control -- Release of New 08--30--94 4 03--12--98

Investment Casting Cover Assembly

1331 Engine, Fuel and Control -- Rework of 08--30--94 2 10--31--96

Governor Throttle Shaft to Add Lubrication
Channel to Lubricate the Throttle Shaft

1332 Engine, Fuel and Control -- Rework of Fuel 08--30--94 1 10--31--97

Control Throttle Shaft to Add Lubrication
Channel to Lubricate the Throttle Shaft

1333 Engine, Turbine Assembly -- Authorization 12--31--93 6 07--28--08

to Reidentify Semi--Finished 2nd--Stage
Nozzles

A--1335 Engine, Compressor Assembly, Replace- Cancelled

ment of Certain Vane Assemblies -- Diffuser
P/N 6870813

A--1336 Engine, Fuel Control Maximum Fuel Flow 08--15--94 08--01--95

Setting Adjustment

1337 Cancelled Prior to Publication

1338 Control System, Goodrich Model MC40 Fuel 03--31--97 2 12--20--07

Control -- Installation of a New Start
Regulator Valve

A--1340 Engine, Gearbox, Removal of Certain Pin- 10--04--95 1 11--30--95

ion Gears

M250--C20 INDEX
Revised October 1, 2013 PAGE 18 OF 23
 Rolls--Royce
COMMERCIAL ENGINE BULLETIN INDEX

Date Revision Date Compliance Compliance

CEB No. Subject Published Number Revised Requirement Completed
A--1341 Engine, Turbine, Visual Inspection of Cer- 01--15--96 2 10--15--97
tain First--Stage Nozzle Shield Dome
Details for Condition

A--1342 Engine, Turbine, Inspection of First--Stage 01--15--96 2 05--12--99

Nozzle Shield Dome Detail for HMI or
Overhaul

1343 Engine, Fuel and Control, Release of New 07--31--96

Design Shaft Seal For CECO Model MFP
263 and 264 Fuel Pump

1345 Engine, Fuel and Control -- Fuel Control 04--10--97 4 05--17--10

Drive Bearings -- Replace

1346 Engine Assembly, Start Counter, Removal/ Cancelled

Installation

1347 Engine, Fuel and Control, Power Turbine 07--15--97 1 05--08--98

Governor Drive Bearings -- Replace

1348 Engine, Fuel and Control, Fuel Control Stop 08--31--97 2 10--13--99
Nut -- Rework

A--1349 Engine Assembly, Turbine Pressure Lube 05--30--97

Oil Check Valve, P/N 23062087, Verification
of Proper Clamp Part Number and Position

A--1351 Engine, Gearbox Assembly -- Oil Delivery 03--15--99 2 02--02--04

Tube -- Replace

A--1352 Engine, Fuel and Control -- CECO Engine 08--21--97

Driven Fuel Pump -- Internal Spline
Inspection

A--1353 Engine, Fuel and Control -- Certain Honey- 05--30--98 2 06--28--00

well Fuel Control Units and Power Turbine
Governors -- Inspection of CAM Follower
Lever

1354 Engine, Electrical -- Start Counter Assembly 01--15--99 1 03--17--99

-- Removal/Installation

1355 Engine, Fuel and Control -- CECO 04--30--98

MFP--263 Fuel Pump -- Replace

1357 Engine, Fuel And Control -- AlliedSignal 01--08--99 1 09--28--99

(Bendix) Main Fuel Control -- Incorporate
One Piece Bypass Valve Sleeve

1360 Engine, Turbine Assembly -- Recoating Of 11--22--99 2 02--22--10

Power Turbine Inner Shaft

A--1361 Engine, Fuel And Control -- Honeywell Fuel 10--05--98 3 08--13--04

Control Unit And Power Turbine Governor --
Internal Spring Replacement

M250--C20 INDEX
Revised October 1, 2013 PAGE 19 OF 23
 Rolls--Royce
COMMERCIAL ENGINE BULLETIN INDEX

Date Revision Date Compliance Compliance

CEB No. Subject Published Number Revised Requirement Completed
1362 Engine, Fuel and Control -- Chandler Evans 04--27--99
(CECO) MC--40 Power Turbine Governor --
Replacement of Muscles Valve Locknut

1363 Engine, Gearbox Assembly -- Release Of 11--05--99 3 05--03--10

New Helical Torquemeter Gearshaft
Assemblies and Internal Retaining Rings
(Damper)

1365 Engine -- Power Turbine With Improved 04--14--99 4 04--26--10

Airflow Characteristics

1366 Engine, Fuel and Control -- Honeywell 08--01--01

Model DP--N2 Main Fuel Control --
Inspection and Replacement of Fuel Control
Throttle Lever

1367 Engine, Fuel and Control -- Release of New 04-20-01 1 11--15--02

Bypass Retention Plate

1369 Engine, Compressor Assembly -- Impeller 03--22--00 1 07--12--07

Rework

A--1370 Engine, Turbine -- Inspection Of 1st--Stage 03--29--00 6 10--27--08

Nozzle Shield Dome

A--1371 Engine, Turbine Assembly -- Gas Producer 05--09--00 2 11--03--08

Rotor Assembly -- Replace Turbine Tie Bolt

A--1372 Engine, Gearbox -- Inspection For 02--15--00

Installation Of Torquemeter Retaining
(Damper) Ring

A--1373 Engine, Turbine -- One--Time Inspection For 02--23--00

Overtemperature Damage

A--1374 Engine, Compressor Assembly -- Visual 05--05--00 1 08--02--00

Inspection of Compressor Scroll Pressure
Probe Elbow (Pressure Probe)

A--1375 Engine, Turbine -- Replacement Of 2nd-- 10--24--00 3 10--12--09

Stage Nozzle Diaphragm

1379 Engine, Accessory -- Conversion Of --C20R 10--06--00

Auto Re--light Kit To --C20B/J Kit

1382 Engine, Fuel and Control -- Honeywell 04-06-01 1 05--13--02

(Bendix/AlliedSignal) Main Fuel Control
Units -- One Time Inspection Of Screws

1384 Engine, Fuel and Control -- Honeywell 06-13-01

(Bendix/AlliedSignal) Power Turbine
Governor -- Tee Filter Inspection

1385 Engine, Control System -- One Time 10-15-01 1 11--28--01

Inspection For Proper Components

M250--C20 INDEX
Revised October 1, 2013 PAGE 20 OF 23
 Rolls--Royce
COMMERCIAL ENGINE BULLETIN INDEX

Date Revision Date Compliance Compliance

CEB No. Subject Published Number Revised Requirement Completed
1386 Engine, Gearbox Assembly -- Inspection of 10-03-01 1 01--16--02
Helical Torquemeter Gearshaft Assembly

1387 Engine, Turbine Assembly -- Removal of 02-19-03

Third--stage Turbine Wheels (23065833)
From 250--C20W Engines

1388 Engine, Main Accessory Gearbox -- 04--25--02

Release of Rework And Reidentified Lip
Seals

1389 Engine, Compressor -- Removal of Certain 01-31-03

Front Compressor Bearing Housings

1391 Engine, Fuel and Control -- Power Turbine 04-23-03

Governor Increased Durability Design

A--1392 Engine -- Compressor Adapter Coupling 09-09-03 4 08--23--10

1393 Engine, Fuel and Control -- Goodrich Engine 04-07-04 1 03--31--08

Driven Fuel Pump Improved Drive Shaft
Durability

A--1394 Engine, Fuel Control -- Release of New Fuel 09-04-03 1 08--30--04

Nozzle

1395 Engine, Gearbox Assembly -- Replacement 02--07--05

of Breather Gear Seal

A--1398 Engine, Turbine Assembly -- Power Turbine 10-09--06 3 01--19--09

Outer Shaft

1399 Engine, Turbine -- Inspection of Sump 02--19--07 1 07--12--07

Assembly, Oil -- Gasifier Turbine Bearing
Support

A--1400 Engine, Turbine Assembly -- Steady--State 12-22--06 3 01--19--09

Operation Avoidance Limit

1402 Engine, Fuel & Control -- Power Turbine 04--21--08 2 02--04--09

Governor Increased Reliability

1404 Engine, Fuel and Control -- Honeywell 05--18--09

Main Fuel Controls -- Verification of Fuel
Flow Calibration

1405 Engine, Fuel and Control -- Honeywell 10--07--09 1 04--09--12

Main Fuel Controls -- Replacement of Cutoff
Valve Lever and Shaft Assembly, and Drive
Body Assembly

1406 Engine, Turbine Assembly -- Replacement 09--13--10 1 08--15--11

of Turbine Gas Producer Forward Labyrinth
Seal

M250--C20 INDEX
Revised October 1, 2013 PAGE 21 OF 23
 Rolls--Royce
COMMERCIAL ENGINE BULLETIN INDEX

Date Revision Date Compliance Compliance

CEB No. Subject Published Number Revised Requirement Completed
1407 Engine, Turbine Section -- Inspection of 11--29--10 2 08--20--12
Rolls--Royce M250--C20, C20B, or C20R/2
3rd--Stage (23065818) & 4th--Stage
(23055944) Enhanced Power Turbine
Wheels

1408 Engine Conversion, M250--C20B to 05--09--11

M250--C20W

1411 Engine -- Fuel Nozzle Spray Tip/Inner Air 09--09--13

Shroud Replacement

1412 Engine, Fuel & Control -- Honeywell Main 04--09--12 1 08--20--12

Fuel Controls -- Replacement of the Bypass
Valve Sleeve

M250--C20 INDEX
Revised October 1, 2013 PAGE 22 OF 23
 Rolls--Royce
INSTALLATION BULLETIN INDEX

Installation Date Revision Date

Bulletin No. Subject Published Number Revised

1001 250--C20 Burner Drain Valve -- Relocate -- 04--19--71

Hughes 500

1002 Cancelled Prior To Publication

1003 Compressor Scroll--to--Bleed Valve Air Sensing 11--29--71

Tube Assembly -- Replace Bolkow BO 105

1004 High Force Check Valve and Six Cubic Inch Ac- 10--15--71 5 11--01--89
cumulator for 250--C20 Series or 250--C20R Se-
ries Bendix Fuel System

1005 Three Cubic Inch Accumulator Installation for 08--04--72 4 03--01--89

250--C20 Series or 250--C20R Series Bendix
Fuel System

1006 Model 250--C20 Series Autoreignition Control, 11--24--72 4 09--15--95

Bell 206B Series Aircraft -- Installation

1007 Cancelled Prior to Publication

1008 Cancelled Prior to Publication

1009 High Force Check Valve for 250--C20/C20B 02--09--79 1 06--01--79

Bendix Fuel System and Burner Drain Valve --
Relocate -- Soloy Conversions Limited Bell 47

1010 250--C20B/--C20J Autoreignition Control, Bell 12--09--75 1 10--31--91

Aircraft Model 206L -- Installation

1011 250--C20/--C20B Burner Drain Valve -- Relocate 10--25--78

Soloy Conversion Hiller UH--12

1012 Gearbox Assembly, Spare Accessory Drive 02--15--80 4 08--31--97

Installation -- Add

1013 Engine, Fuel and Control, Installation of Cover 02--15--91 1 09--15--97

on Power Turbine Governor or Fuel Control Unit
Vent Screen

1014 Engine, Compressor Assembly, Discharge Air 05--15--97

Tube Packings -- Install

1014A Cancelled Prior to Publication

1015 Three Cubic Inch Enstrom Accumulator, 12--15--95 2 05--20--13

PTO Pad Studs, and Double Lip Seal
Installation for M250--C20W

M250--C20 INDEX
Revised October 1, 2013 PAGE 23 OF 23