TCDS 1E15

Page No. 1 2 3 Rev. No. 6 6 6 Reformatted 1/95 DEPARTMENT OF TRANSPORTATION FEDERAL AVIATION ADMINISTRATION 1E15 Revision 6 Textron Lycoming IO-720-A1A, -A1B, -A1BD, -B1A, -B1B, -B1BD, -C1B, -C1BD, -D1B, -D1BD, -D1C, -D1CD February 15, 1988 TYPE CERTIFICATE DATA SHEET NO. 1E15 Engines of models described herein conforming with this data sheet (which is a part of Type Certificate No. 1E15) and other approved data on file with the Federal Aviation Administration meet the minimum standards for use in certificated aircraft in accordance with pertinent aircraft data sheets and applicable portions of the Civil Air Regulations/Federal Aviation Regulations provided they are installed, operated and maintained as prescribed by the approved manufacturer's manuals and other approved instructions. Manufacturer Textron Lycoming/Subsidiary of Textron, Inc. Williamsport Plant Williamsport, Pennsylvania 17701 Model Lycoming IO-720-A1A, -A1B, -A1BD -B1A, -B1B, -B1BD -C1B, -D1B, -D1C-C1BD -D1BD, -D1CD Type 8H0A Direct Drive - - Rating Max. continuous hp., r.p.m., full throttle at: Sea level pressure altitude: 400-2650* Takeoff, hp., r.p.m., full throttle at: Sea level pressure altitude 400-2650 Fuel (Min. grade aviation gasoline), Service Instruction No. 1070 100/130 Lubricating oil (Lubricating should conform to the Specifications as listed or subsequent revisions thereto) Lycoming Spec. No. 301-F Service Instruction No. 1014 Bore and stroke, in. 5.125 x 4.375 Displacement, cu. in. 722 Compression ratio 8.7:1 Weight (dry), lb. See NOTE 9 Propeller shaft flange, SAE No. Type 2 modified Crankshaft dampers (torsional) one 3.5 order six 4th order one fifth order Fuel injection Bendix RSA-10AD1 RSA-10ED1 (-B1B, -B1BD) Fuel pump See NOTE 2 RG9080-J4A (D1B, -D1C) External fuel filtration requirements 150 micron, max. Ignition, dual See NOTE 9 Ignition timing °BTC 20° Spark plugs See NOTE 6 Oil sump capacity, qt. 19 Usable oil sump capacity, qt. 16 NOTES 1,2,3,4,5,6,7,8,9 *Models IO-720-D1B, -D1C, -D1BD, -D1CD have an alternate rating of 375 hp at 2500 r.p.m. 1E15 2 "C" - Clockwise "CC" - Counter-clockwise. "#" indicates "does not apply" Certification basis: Regulations & Amendments Model Date of Application Date Type Certificate 1E15 Issued/Revised CAR 13 as amended to June 15, 1956 & 13-1, 13-2, 13-3 IO-720-A1A December 6, 1960 October 25, 1961 13-4 IO-720-B1A February 19, 1963 November 4, 1965 IO-720-A1B February 12, 1971 February 22, 1971 IO-720-B1B February 12, 1971 February 22, 1971 IO-720-C1B December 16, 1971 December 22, 1971 IO-720-D1B October 22, 1973 October 29, 1973 IO-720-A1BD August 21, 1975 December 30, 1976 IO-720-B1BD December 28, 1976 December 30, 1976 IO-720-C1BD January 24, 1977 January 28, 1977 IO-720-D1BD January 24, 1977 January 28, 1977 IO-720-D1CD June 6, 1977 June 10, 1977 IO-720-D1C March 11, 1982 April 15, 1982 Production basis: Production Certificate No. 3 NOTE 1. Maximum permissible temperatures are as follows: Cylinder head 500°F (well-type thermocouple) Oil inlet 245°F NOTE 2. Fuel pressure limits: Maximum Minimum Idle (min.) Inlet to fuel pump when supplied with engine -D1B, -D1C 55 p.s.i. -2 p.s.i. # All others 45 p.s.i. -2 p.s.i. # Inlet to injector -B1A, -B1B 35 p.s.i. 25 p.s.i. # All others 45 p.s.i. 18 p.s.i. 12 p.s.i. Oil pressure limits: Idling # 25 p.s.i. Normal operation 95 p.s.i. 55 p.s.i. (50 p.s.i.: -A1A, -A1B) Start & warm-up 115 p.s.i. Fuel Pump (optional) Lear Siegler Model -A1A, -A1B, -A1BD RG17980 or RG9080 -B1BD, -C1B, -C1BD, -D1B, -D1BD, -D1C, -D1CD RG9080 NOTE 3. The following accessory drive provisions are available. IO-720 Model -B1B -B1A -D1C -C1BD Rotation Facing Speed Maximum Torque Maximum Overhang -A1B -D1B -B1BD -D1CD Drive Ratio to (in.-lb) Moment Accessory -A1A -C1B -A1BD -D1BD Pad Crankshaft Cont. Static (in-lb.) Starter X X CC 13.556:1 # 450 150 Alternator X X C 3.20:1 60 120 175 Generator (Optional) X X C 2.50:1 60 120 175 Generator (Opt) X X C 3.1:1 60 120 175 Accessory #1 X X CC 1.3:1 70 450 25 Accessory #2 X # C 1.3:1 100 800 40 Accessory #2 # X C 1.3:1 180 2200 40 Accessory #2 (Opt) # X C 1.3:1 180 2200 100 Tachometer X X C 0.5:1 7 50 5 Fuel Pump X # CC 1:1 25 450 25 Fuel Pump # X C 1:1 25 450 25 Spray Pump (Opt) X X C 1.346:1 250 1600 40 Propeller Gov X X C 0.895:1 125 1200 25 3 1E15 NOTE 4. These engines incorporate provisions for absorbing propeller thrust in both tractor and pusher type installations. NOTE 5. These engines are equipped with all-weather ignition harness as standard equipment. NOTE 6. Spark plugs: See latest revision of Lycoming Service Instruction No. 1042 for approved equipment. NOTE 7. These engines incorporate the following additional characteristics: Model Characteristics IO-720-A1A Basic model. Eight cylinder, horizontally opposed, air-cooled direct drive fuel injection engine, internal oil jet piston cooling. IO-720-A1B Same as -A1A except equipped with Bendix S8LN-1208 and S8LN-1209 magnetos. IO-720-B1A Same as -A1A except for top exhaust cylinders and offset exhaust valve shroud tubes. IO-270-B1B Same as -B1A except equipped with Bendix S8LN-1208 and S8LN-1209 magnetos and Bendix RSA-10ED1 fuel injection. IO-720-C1B Same as -A1B except that it has up-exhaust cylinder heads. IO-720-D1B Same as -A1B except has a rear type air inlet housing instead of a front inlet. IO-720-D1C Same as -D1B except equipped with an angled fuel injector adapter. IO-720-A1BD Same as -A1B except has a dual magneto. IO-720-B1BD Same as -B1B except has a dual magneto. IO-720-C1BD Same as -C1B except has a dual magneto. IO-720-D1BD Same as -D1B except has a dual magneto. IO-720-D1CD Same as -D1C except has a dual magneto. NOTE 8. Starters, generators and alternators approved for use on these engines are listed in the latest revision of AVCO Lycoming Service Instructions No. 1154. NOTE 9. IO-720 Model, Weight (dry), ignition, dual, and C.G. C.G. Location (dry) including starter and generator Model Weight Magnetos Propeller Flange Front Face, in. Below Crankshaft C.L., in. Off Crankshaft C.L. in. -A1A 565 Bendix S8LN-701, S8LN-705 21.33 0.91 0.20 Left -A1B 565 S8LN-1208, S8LN-1209 21.33 0.91 0.20 Left -B1A 557 S8LN-701, S8LN-705 21.90 0.80 0.10 Left -B1B 557 S8LN-1208, S8LN-1209 21.90 0.80 0.10 Left -C1B 566 S8LN-1208, S8LN-1209 21.33 0.91 0.20 Left -D1B 580 S8LN-1208, S8LN-1209 21.33 0.91 0.20 Left -A1BD 561 D8LN-2200 21.13 0.81 0.00 Left to Right -B1BD 557 D8LN-2230 21.70 0.70 0.10 Right -C1BD 563 D8LN-2230 21.13 0.81 0.0 Left to Right -D1BD, -D1CD 571 D8LN-2200 21.70 0.70 0.10 Right -D1C 580 S8LN-1208, S8LN-1209 21.33 0.91 0.20 Left .....END.....