# TCDS TC 5E-1: Pratt & Whitney Division - Type: Type certificate data sheet - Status: Current - Holder: Pratt & Whitney Division - Revision: 0 - Product: Engine - Data sheet PDF: https://openairdocs.org/files/sha256/50/2e/502e2ef6ae1293ebfe7d644bad1fb8a30ba7a4352e6435367b74939a9bddf29f - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/55F5D74FC76375D58525676A00677446.0001 - Page: https://openairdocs.org/tcds/TC%205E-1 ## Models (1) As the data sheet lists them. - Military R-985 Series ## What the data sheet says This is OCR from the scanned FAA data sheet. OCR can misread letters and numbers. ```text MODELS: Pratt & Whitney Military Models R-985 Series 1.C. NUMBER: SE-1 Military model R-985-5 R-985-13,-50 R-985-17,-19. R-985-25,-27 R-985-39, R-985-AN-5 9RA direct drive -23,-48,-AN- - 39A, -AN- 1, 1M1,-AN-2, -AN• -AN-3, 4.-AN-6,-AN-68, - AN-14BM1 -AN-8. -AN-10, -AN-12,-AN-12B. -AN-14B Ratings: Maximum continuous, hp, Ipm. in. 8g.. at: Rated pressure 400-2200- 400-2200- 450-2300- 450-2300- 450-2300- altitude (ft.) 33.5-5000 33-5-5000 37.0-1500 37.0-1500 36.5-2300 s.I. pressure 350-2100 (F-I.) 400-2200- 400-2200- 450-2300- 450-2300- 450-23 00- altitude (ft.) 34.5-S.L. 34.5-8.1. 37.5-S.L. 37.5-S.L. 37.0-S.1. (Or fOr AN Series only) 450-2300- 35.5-3500 450-2300- 36.5-S.L. Tak€-off (5 minutes). 350-2100 (F-T.) 400-2200-34.5 450-2300-37.5 450-2300-37.5 450-2300-37.0 altitude at S.1. pressure 050-2300-36-5 Fuel (minimum grade 80 80/87 aviation) Pore and stroke, in. 5-3/16 × 5-3/16 Lisplacement, cu. in. 985 Compression ratio 6.2:1 6:1 weight (dry), 1bs. See NCTE 5 C.G. location Forward of mourting Felcw crankcase C.L. face, in. 1-3 6_7 6.6 supercharging (impeller gear ratio) 7.1:1 10: 1 Carburetion Stromberg NA-R9A -R9C2 Venturi 2-3/4 2-518 2-3/4 Ignition Scintilla Bosch SB9R-U3 VAG-9D Magnec os Ignition timing, degrees BTC 25 NOT 200 degrees F., respectively, except for 500 Maximum permissible cylinder head, 550 degrees F.. 335 degrees F., and NOTE 2. Pressure limits - normal operation Maximum 6 psi. psi pressure 100 psi. 50 psi. NOTE? there is no porm for this information on the existing nameglate, such information may be stamped on a plair. When incorporated in certificated aircraft, the engine nameplate should be stamped, "CAA Spec. No. 5E-1." thin metal plate attached beneath the existing plate by at least two of the mounting screws. nodel designation is required, because of changes to the engine, the new designation should be added to the nameplate. NOTE 4. The following accessory drives are provided: Direction of Rotation Speed Ratio Maximum Max imum (Clockwise or (Times Torque (in.lbs.) Overt.ang counter-Clockwise) Crankshaft Speed) Continuous Static (in. Its.) *Starter 1:$ 2200 10000 180 100 300 183 Generator 150 900 183 *Fuel pump 150 450 Vacuum pump 1.5 100 800 10 1.5 100 300 10 1. 5 100 800 10 1.0 150 450 10 *NOTE: Sphere teleporte tongue and rove perver tenth tater are were supplied on a Three tooth starter jaws were suppiied or al! -8, -12, which have 12 tooth starter jaws and either type on the -50. NOTE 5. The above engines incorporate the following individual characteristics: Similar Certificated R-985 Model Wt. dry Its. wasp Jr. Characteristics 684 None Manual grease valve gear lubrication, no hydraulic propeller provisions, and no crankshaft vibration dampers, Scintilla - 13 640 None or 9C2 carburetor. -17,-19,-23 648 SP Manual rocker oiling system, has 4-1/2 and 9th order crankshatt vibratich dampers, provision for hydraulic two position or constant speed propeller and optional magnesiun or aluminum nose and accessories housings, Scintilla magnetos and NAR-9B carturetor and toncue tyre accessory drives. - 25 685 I1B2 Similar to -17 except provision for external automatic rocker oiling and splined type vacuum and fuel pump drives. - 27 685 I182 Similar to -25 except provisions for manual rocker oiling system no tongue type accessory drives - 39 674 I1B3 Similar to -AN-1 except 2:1 generator drive - 39A 674 T183 Similar to -AN-3 except 2:1 generator drive. -48 664 I1P2 Similar to -27 except NAK-9C2 carburetor. -50 664 SB2 Similar to -25, NAR-9B or -9C2 carturetor. -AN-1 668 71B3 Automatic internal rocker oiling system, 4-1/2 and 9th order crankshaft vibration dampers. provision for two position and constant speed hydraulic propeller, magnesium nose and accessor! -AN-1M1 668 I1B3 Similar to -AN-1 except has NA-P9B or NA-R9C2 carturetor with Bosch magnetos. NAR-9B carkuretor. 2-3/4 inch venturi and has -AN-4 ratings and limits. -AN-2 668 B5. SB 3 Similar to AN-1 except NAR-9C2 carburetor setting and ratings. 668 I1E3 Same as AN-1 except has aluminum housings. -AN-4 668 B5, SB3 B4 For installation only with crankshaft vertical. otherwise essentially similar to AN-1 except for lubrication system and 041001 ECOL elbow differences. -AN-6, -0B 676 B5, SB3 Similar to AN-2 except has different carburetor setting; AN-6B differs additionally by having 3-tooth starter jaw instead of 12-tooth. -AN-8 668 similar to AN-2 except aluminum housings. -AN-10 682 SB J Similar to AN-4 except for aluminum cases. -AN-12, -12B B5. SB3 similar to AN-6 and -6B respectively, except aluminum housings. -AN14B 676 ES, SB3 Similar to AN-u except optional aluminum or magnesium housings, and has provision for feathering type hydraulic propeller. -AN-14BM1 676 T1B3 Similar to AN-14E except has AN-1 or AN-3 carburetor, carturetor settings and ratings. All 400 bp ratings listed above are eligible with 80 octane aviation fuel. All ratings shown akove are eligible with grade 80/87 fuel. should be used with the 450 bhp ratings. thing deis -25. 121 a dAN-are eligible at the following 400 hp ratings on 80 octane aviation fuel: Maximum continuous 400-2300-33.0-5300; 400-2300-34.5-S.L. Take-off 400-2300-34.5-S.L. NOTE 7. 50 in: Bout, TA, RE, i chi changion 265, 7S, BA, SIN, 5, DON, PON, REM39N, RHM39N, REM40E, RHMUOE. ``` ## ADs (7, in force first) - [AD 78-08-07](https://openairdocs.org/ad/78-08-07): Cylinder Head Separation · Pratt & Whitney Division Military R-985 Series, Wasp Jr. A, Wasp Jr. B-4 and 10 more. Effective May 2, 1978 - [AD 68-09-01](https://openairdocs.org/ad/68-09-01): Crankshaft Flyweight Liners · Pratt & Whitney Division Military R-985 Series, Wasp Jr. A, Wasp Jr. B-4 and 10 more. Effective Jan 17, 1973 - [AD 70-10-02](https://openairdocs.org/ad/70-10-02): Gerotor Pump Drive Pin/Fuel Injector Filter · Pratt & Whitney R-985 engine and ATI fuel injection (Staggerwing Museum Foundation STC SE1-391). Effective Jun 9, 1970 - [AD 66-14-04](https://openairdocs.org/ad/66-14-04): Cam Reduction Drive Gear Assembly · Pratt & Whitney Division Military R-985 Series, Wasp Jr. A, Wasp Jr. B-4 and 10 more. Effective Jul 9, 1966 - [AD 56-06-02](https://openairdocs.org/ad/56-06-02): Cylinder Flange Attaching Stud · Pratt & Whitney Division Double Wasp CA15, Double Wasp CA17, Double Wasp CA18 and 115 more - [AD 57-05-04](https://openairdocs.org/ad/57-05-04): Crankshaft · Pratt & Whitney Division Military R-985 Series, Wasp Jr. A, Wasp Jr. B-4 and 10 more - [AD 56-26-03](https://openairdocs.org/ad/56-26-03) (historical): Crankshaft · Pratt & Whitney Division Military R-985 Series, Wasp Jr. A, Wasp Jr. B-4 and 10 more ## STCs approved under this data sheet (9) - [STC SE04651CH](https://openairdocs.org/stc/SE04651CH): To allow use of l00R grade aviation fuel meeting Swift Fuel, LLC specification SPEC-l00R-22. Swift Fuels LLC - [STC SE01651WI](https://openairdocs.org/stc/SE01651WI): Conversion of engine from carburetion to fuel injection. A & L Aircraft Parts Inc - [STC SE5189NM](https://openairdocs.org/stc/SE5189NM): Installation of chip detector light system.. A & L Aircraft Parts Inc - [STC SE02505SE](https://openairdocs.org/stc/SE02505SE): Installation of a Kenmore flyweight screw. Kenmore Air Harbor LLC - [STC SE3-612](https://openairdocs.org/stc/SE3-612): Installation of Bendix Model RS-10DD-1 single point fuel injection system to replace the Bendix-Stromberg NAR-9B carburetor.. Textron Aviation Inc - [STC SE31WE](https://openairdocs.org/stc/SE31WE): Installation of Electro-Coatings, Inc. piston rings P/N 251822, 251824, and 251825 on Pratt and Whitney R-985 piston P/N 27056 for use with Channelcromium plated R-985 engine cylinders. Continental Motors, Inc. - [STC SE818GL](https://openairdocs.org/stc/SE818GL): Installation of a Fuel Flow Transducer. Shadin Avionics - [STC SE11WE](https://openairdocs.org/stc/SE11WE): Bendix fuel injection system, RS10B2.. Aviation Power Supply Inc - [STC SE4-1268](https://openairdocs.org/stc/SE4-1268): 3-200 fuel injection unit incorporating Bendix RS-10B2 servo- regulator and 367605 nozzle assembly.. 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