TCDS E-243

Page No. 1 2 3 Rev. No. 7 7 7 Reformatted 10/94 DEPARTMENT OF TRANSPORTATION FEDERAL AVIATION ADMINISTRATION E-243-7 WRIGHT Cyclone 736C9HD1,2,3,4 737C9HD1,2,3,4 740C9HD1,2 977C9HD1,2,3 989C9HD1 987C9HD1 December 28, 1983 TYPE CERTIFICATE DATA SHEET NO. E-243 Engines of models described herein conforming with this specification and approved data on file with the Federal Aviation Administration meet the minimum standards for use in certificated aircraft in accordance with pertinent aircraft specifications and applicable portions of the Civil Air Regulations provided they are installed, operated and maintained as prescribed by the approved manufacturer's manuals and other approved instructions. Type Certificate Holder: Curtiss-Wright/Marquette, Inc. Fountain Inn, South Carolina Model Cyclone 737C9HD1,2,3,4 736C9HD1,2,3,4 740C9HD1,2 Type 9RA 16:9 Reduction Gears - - - - Rating (with low impeller gear ratio) 7.21:1 - - - - Maximum continuous, hp, rpm, in. Hg., at: Rated pressure altitude (ft.) 1275-2500-45.5-3500 - - - - Sea level pressure altitude 1275-2500-46.5-S.L. - - - - Takeoff (Five minutes), hp, rpm, in. Hg., at: Rated pressure altitude (ft.) 1425-2700-50.5-2600 - - - - Sea level pressure altitude 1425-2700-51.5-S.L. - - - - Rating (with high impeller gear ratio) 10.14:1 8.69:1  Maximum continuous, hp, rpm, in. Hg., at: Rated pressure altitude (ft.) 975-2500-42.0-18300 1125-2500-44.0-10600  Low critical pressure altitude (ft.) 975-2500-43.5-12000 1125-2500-44.5-7800  Takeoff (Five minutes), hp, rpm, in. Hg., at: Rated pressure altitude (ft.)  1250-2700-48.0-10800  Low critical pressure altitude (ft.)  1250-2700-49.0-6500  Fuel (Minimum grade aviation gasoline) 100/130 - - - - Lubricating oil MIL-L-6082, WAD - - - - Spec 5815 or 5818 Bore and stroke, inches 6.125 x 6.875 - - - - Displacement, cubic inches 1823 - - - - Compression ratio 6.8:1 - - - - Weight (dry), lb. See NOTE 5 - - 1368 (D1) C.G. location (dry) 1373 (D2) Fwd. of mounting face, in. 7.4 - - - - Above prop. shaft, in. .2 - - - - Propeller shaft, SAE No. 50 - - - - Carburetion, Stromberg PD12K10 (D1, 2) - - PD12K10 PD12K18 (D3, 4) - - Ignition, Dual Edison Splitdorf - - Scintilla SF9LN-4 SF9LD-3, SF9LD-5 magnetos or Scintilla SF9LN-4 magnetos Timing, °BTC 20 - - - - Spark plugs See NOTE 8 - - - - NOTES 1,2,3,4,5,8 1,2,3,4,5,8 1,2,3,4,8 "- -" indicates "same as preceding model" "" indicates "does not apply" E-243 2 Model Cyclone 987C9HD1 977C9HD1 977C9HD2 977C9HD3 Type 9RA 3:2 Direct Drive - - - - Rating (with low impeller gear ratio) 7.21:1 - - - - - - Maximum continuous, hp, rpm, in. Hg., at: Rated pressure altitude (ft.) 1275-2500-46.0-3300 1275-2500-47.0-2600 - - - - Sea level pressure altitude 1275-2500-47.5-S.L. - - - - - - Takeoff (Five minutes), hp, rpm, in. Hg., at: Rated pressure altitude (ft.) 1425-2700-51.5-2300 - - - - - - Sea level pressure altitude 1425-2700-52.5-S.L. - - - - - - Rating (with high impeller gear ratio) 10.14:1 - - 8.69:1  Maximum continuous, hp, rpm, in. Hg., at: Rated pressure altitude (ft.) 975-2500-42.0-18300 - - 1125-2500-42.0- 11600  Low critical pressure altitude (ft.) 975-2500-43.0-12000 - - 1125-2500-43.5- 7800  Takeoff (Five minutes), hp, rpm, in. Hg., at: Rated pressure altitude (ft.)  1100-2600-49.0- 16000 1250-2700-46.5- 11400  Low critical pressure altitude (ft.)  1100-2600-50.0- 10200 1210-2700-48.5- 6400  Fuel (Minimum grade aviation gasoline) 100/130 - - - - - - Lubricating oil MIL-L-6082, WAD - - - - - - Spec 5815 or 5818 Bore and stroke, inches 6.125 x 6.875 - - - - - - Displacement, cubic inches 1823 - - - - - - Compression ratio 6.8:1 - - - - - - Weight (dry), lb. 1371 1349 - - - - C.G. location (dry) Fwd. of mounting face, in. 7.4 6.64 - - Above prop. shaft, in. .25 .25 above, .11 right Propeller shaft, SAE No. 50 - - - - Carburetion, Stromberg PD12K14 or K18 PD12K19 - - - - Ignition, Dual Bosch S9LU-3 - - - - - - Timing, °BTC 20 - - - - - - Spark plugs See NOTE 8 - - - - - - NOTES 1,2,3,7,8 1,2,3,6,7,8 1,2,3,6,7,8 1,2,3,6,7,8,9 "- -" indicates "same as preceding model" "" indicates "does not apply" Certification basis Type Certificate No. 243 Production basis Production Certificate No. 8 NOTE 1. Maximum permissible temperature limits are as follows: 977C9HD1,2,3 All others Cylinder head (well type thermocouple) 450°F (500°F for T.O.) 475°F (500°F for T.O.) Cylinder barrell 320°F (350°F for T.O.) 335°F (350°F for T.O.) Oil inlet 220°F 220°F NOTE 2. Minimum Maximum Oil pressure limits (psi) 65 75 Fuel pressure limits (psi) 21 25 3 E-243 NOTE 3. The following accessory provisions are provided: 736 C9HD Direction Maximum Torque Maximum 737 C9HD of (Inch pounds) Overhang Moment 740 C9HD 977 C9HD 987 C9HD Rotation Speed Continuous Static (Inch pounds) Starter X X X C 1.0  25,800 300 Generator and accessory drive X X C C 3.31 2.53 300 500 3,000 2,200 350 350 Generator and accessory drive X C 3.31 500 2,200 350 Fuel pump X CC 1.0 16.5 450 25 Fuel pump X X CC 1.0 25 450 25 Vacuum pump X CC 1.5 50 1,200 25 Vacuum pump X X CC 1.5 100 800 25 Hydraulic pump X CC 1.5 150 2,250 50 Hydraulic pump X X CC 1.5 250 1,650 50 Propeller Governor X C 1.0 125 2,300  Propeller Governor X X C 1.0 125 825  Tachometer X C 0.5 25 70  Tachometer X X C 0.5 7 50  "C" Clockwise viewing pad, "CC" counter-clockwise Speed - X crankshaft. NOTE 4. Models 737C9HD2 & 4, 736C9HD2 & 4, and 740C9HD2 incorporate a torquemeter. NOTE 5. The following dry weights will apply for Models 737C9HD1,2,3,4 and 736C9HD1,2,3,4: Edison Splitdorf SF9LD-3, Scintilla SF9LN-4 SF9LD-5 magnetos installed magnetos installed 1360 lbs. (Models 1 & 3) 1376 lbs. (Models 1 & 3) 1365 lbs. (Models 2 & 4) 1381 lbs. (Models 2 & 4) NOTE 6. The 977C9HD1, 2 and 3 engine ratings and limitations are applicable to helicopter installation and operation. NOTE 7. The ratings of engine Models 977 and 987 C9HD1 are based on standard conditions of temperature and barometric pressure (60°F and 29.92 in. Hg. at sea level) and 80% relative humidity. If corrected to dry standard air conditions, the rated powers would be increased approximately 2.5% at sea level to 0.4% at 15,000 ft. for equal manifold pressure settings. NOTE 8. The following spark plugs are approved on these engines: AC 171, 181, 271, 273, 281, 285 BG RB19R-2, RB27R-1 Champion R-111, R-115, R-37S, R-37S-1, REA 37N, REB 37N, RHA 37N, RHB 37N, RHA 37E, RHB 37E NOTE 9. The 977C9HD3 engine is similar to the 977C9HD1 except the high ratio impeller drive has been deactivated by the removal of appropriate parts of the impeller drive and clutch control assembly. .....END.....