TCDS TC 195

P a g e N o .123 R e v . N o .111 DEPARTMENT OF TRANSPORTATION FEDERAL AVIATION ADMINISTRATION 195 Revision 1 Jacobs L-6 Series Military R-915-3, -5, -7 January 2, 2002 TYPE CERTIFICATE DATA SHEET NO. 195 Engine models described herein conforming with this data sheet (which is part of Type Certificate No. 195) 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 provided they are installed, operated, and maintained as prescribed by the approved manufacturer's manuals and other approved instructions. Type Certificate Holder Air Repair, Inc. 920 Airport Service Road Cleveland, Mississippi 38732 Type Certificate Holder Record: Air Repair, Inc. assumed ownership of this type certificate from Jacobs Service Company, 4305 Saturn Way, Chandler, Arizona 85334 on January 2, 2002. Model L-6 L-6M, -6MA L-6MB, -6MBA Type 7RA - - - - - - - - Rating: Maximum continuous, hp, rpm, in. Hg., at: Rate pressure altitude (ft.) 300-2100-23.5-3700 - - - - - - - - Sea level pressure altitude 300-2100-24.5-S.L. - - - - - - - - Take-off (5 minutes), hp, rpm, in. HG 330-2200-26.0 - - - - - - - - Fuel (minimum octane aviation gasoline) 80 - - - - - - - - Bore and stroke, in. 5.5 x 5.5 - - - - - - - - Displacement, cu. in. 914 - - - - - - - - Compression ratio 6: 1 - - - - - - - - Weight (dry), lbs. 555 557, 560 570, 573 Propeller shaft, SAE No. 20 - - - - - - - - Carburetion Stromberg NA-R7A - - - - - - - - carburetor with 2-1/4 in. venturi Ignition, dual Bosch AFV or Scintilla Scintilla MN7-DF5 or Combination Scintilla WL7A battery units VMN-7DF5 magnetos MN7-DF5 or VMN7-DF5 magnetos and Scintilla WL7A or Bosch AFV battery ignition unit Ignition timing, degrees BTC 30 - - - - - - - - Spark plugs BG-4B2 (S), 417S - - - - - - - - SS454, SS485, Bendix 9BS2, 437J, Champion C-27S, M3-1S, RC-26S, C-27, C27S NOTES 1,3,4,6 1,2,3,4,6 1,2,3,4,5,6 195 Page 2 of 3 Certification basis Type Certificate No. 195 Production basis None. The manufacturer no longer holds a production certificate for engine under this type certificate; therefore, each engine pr oduces subsequent to February 20, 1956, is subject to a detailed inspection for workmanship and conformity with the approved data by an FAA representative. In addition, the engine must have a satisfactory run-in including at least five hours at rated power and speed. Upon satisfactory completion of the above, the representative will tag the engine with Tag Form ACA-186. NOTE 1. Maximum permissible cylinder head, barrel, and oil inlet temperature, 550 o F, 325oF, and 200oF, respectively NOTE 2 Models L-6MA otherwise similar to models L-6M and L-6MN, respectively incorporate autogyro rotor drive gearing. NOTE 3. Eligible with aluminum rear, main, and front crankcases, and male bearing plate replacing the magnesium parts with a possible maximum weight increase of 26 lbs. Engine dry weights listed above include starter driver, generator drive, one pump drive, and the following: Accessory drive unit – 1 pump drive (L-6MB only) 3 lbs. Radio shielded ignition (standard equipment for later engines) 10 lbs. Automatic valve gear lubrication (standard equipment for engines above No. 2691) 7 lbs. Propeller oil transfer sleeve (standard equipment for engines above No. 2691) 3 lbs. Generator and control – 15 amp. (L-6 and L-6, and L-6MB only) 15 lbs. NOTE 4. The following accessories are eligible for use on the specified engine models at the indicated additional or substitute weights: Engine Models Optional Accessories Weight (lbs.) L-6 L-6M L-6MN *Governor – Hamilton Standard hydraulic propeller governor Model 1A4 5 Yes - - - - - - - - Hydraulic pump – Pesco Model 320-F 3 Yes - - - - - - - - Fuel pump: Pesco Model M-400A, Romec Model F-4RB, Pesco Model R-400-BLY, Romec Model RD-4140 (4 stud pad), or Pesco Model R-400-BLH (3 stud pad) 2 Yes - - - - - - - - Vacuum pump: Pesco type B-2A, Model 194-C or Romec type B-2A, Model RD2112 4 Yes - - - - - - - - Generator: Eclipse Type D, 25 amp., and control 26 Yes - - - - - - - - Eclipse Model G-2, 15 amp., and control, or EclipseType LV-180, 15 amp, and control 17 Yes - - - - - - - - Leece-Neville (25 amp., 24 volt, and control 27 Yes - - - - - - - - Starter: Eclipse series E-80 Type 397 19 Yes - - - - - - - - Eclipse Type F-141 25 Yes - - - - - - - - Accessory drive unit including: 3 pump drives 6 Yes No Yes 2 pump drives 5 Yes No Yes 1 pump drive 3 Yes - - - - Std. Propeller hub (fixed pitch) 15 Yes - - - - - - - - *All models are eligible for optional use of 2-position hydraulically controllable propeller when the control valve is used in lieu of the constant speed governor. Page 3 of 3 195 NOTE 5. Military R-915-3 engines are similar to Model L-6MBA. Military R-915-5, and -7 engines are similar to Model L-6MN. All military engines should be inspected to installation in civil aircraft to ascertain that piston rings, part numbers 30292, 30293, and 30294 are incorporated. The piston ring part numbers are located on the upper side of ring. Jacobs Service Bulletin No. 31 discusses the installation of these improved rings together with other engine refinements. When used in certificated aircraft, the designation plate of military engines should be stamped with the corresponding certificated model designation and the T.C. Number. If there is no room for this information on the existing plate, a new one may be secured from the engine manufacturer in exchange of the old one. NOTE 6. The following accessory drive provisions are available: Maximum Torque Inch-Pounds Drive Direction of Rotation Drive Ratio Continuous Static Maximum Overhang Moment Inch-Pounds Starter CCL 1.5: 1 - - - - 5500 100 Generator CCL 1.4: 1 50 300 110 Fuel pump (rear crankshaft) CL 1: 1 20 150 - - - - Tachometer CCL .5: 1 - - - - - - - - - - - - *Vacuum pump CCL 1: 1 or .875: 1 30 200 - - - - *Propeller governor CCL 1: 1 30 200 - - - - *Hydraulic pump CCL 1:1 or .875: 1 30 200 - - - - *Fuel pump CCL 1: 1 30 200 - - - - All directions of rotation are given facing engine drive flange. *Accessories marked with an asterisk are mounted on accessory drive unit. The total continuous torque taken off all the drives on the accessory drive unit should not exceed 70 –inch pounds. Overhang moment for drive pads not listed is not critical provided accessory weights listed in NOTE 4 are not exceeded. ....END...