# TCDS P-886: Sensenich Propeller Company - Type: Type certificate data sheet - Status: Current - Holder: Sensenich Propeller Company - Revision: 19 - Revised: August 28, 2023 - Product: Propeller - Certification basis: CAR 14 - Data sheet PDF: https://openairdocs.org/files/sha256/70/ba/70baada687967656be1b8f4017432e1a2597e97ed0773662dba20c1d48dd5653 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID127360654320231019145055.0001 - Page: https://openairdocs.org/tcds/P-886 ## Models (4) As the data sheet lists them. - 74DC - 74DM6 - 74DR - 74DM7 ## What the data sheet says From the PDF's text layer, line by line; tables lose their columns. The PDF is the record. ```text DEPARTMENT OF TRANSPORTATION FEDERAL AVIATION ADMINISTRATION TYPE CERTIFICATE DATA SHEET NO. P886 Propellers of m odels described herein conf orming wit h this data sheet (which is part of Type Certificate No. P886) and other approv ed data on fi le with t he Federal Aviation Admi nistrati on, meet the minimum standards for use in c ertificated aircraft in accordance with per t inent ai rcraft data sheets and applicable portions of the Federal Aviati on Regulati ons provided they are i nstalled, operated and mai ntained as prescri bed by the approved manufacturer's m anuals and other approved instructions. Type Certificate Hol der Se nsenich P ropell er Company 2008 Wood Court Plant City , FL 33 563 Type Fixed -Pitch Met al Materi al Aluminum Alloy Number of Blades Two Basic Model Takeoff & Standard Hub Drilling Hub Dimensions Weight (See Note 2) Max. Cont. Diameter Pitch No. Dia. Dia. Bolt Dia. Thick. (lb.) HP RPM Holes Holes Circle (Max. Dia.) 74DM 6 165 2800 74" 68" -48" 6 25/64" 4-3/ 4" 6" 3-7/ 16" 32.4 74DM 7 165 2800 74" 68" -48" 6 29/64" 4-3/ 4" 6" 3-7/ 16" 32.4 Del et ed December 14, 1 995, See Note 2 Delet ed December 14, 1995, See Note 2 74DR 165 2800 74" 68" -48" 8 25/64" 5-1/ 4" 6-1/ 2" 3-7/ 16" 29.5 Delet ed December 14, 1995, See Note 2 74DC 165 2800 74" 68" -50" 6 33/64" 4" 5-1/ 2" 3-7/ 16" 31.1 Delet ed December 14, 1995, See Not e 2 Certific ation Basis CAR 14 effective March 5, 1952, as amended by 14 -1 effective May 16, 1953. Type Certificate No. 886 issued June 29 , 1954, revised April 9, 1959. Date of appl ication for Type Certific ate April 27, 1954. Production Basis Production Certificat e No. 335CE NOTE 1. Installation . These models are for instal lation on fl anged propel ler shaft ends (see NOTE 2). Installation is to be made with special steel bolts whi ch are furnished or specified by the propell er m anuf actur er i n accordance with t he appropriate propell er assembly drawing. See NOTE 7 for spacer designations and NOTE 9 for approved spacer lengths. a. Propeller Model 74DC is installed on SAE ARP -502 fl anged shaft. b. Propeller Model 74DR is installed on SAE No. 3 flanged shaft. c. Propeller Model 74DM6 is i nstalled on SAE No. 2 fl anged shaft with 3/ 8 inch diameter attaching bolts and 5/ 8 inc h diam eter drive bushi ngs. d. Propeller Model 74DM7 is i nstalled on SAE No. 2 fl anged shaft with 7/ 16 inc h di ameter at taching bolts and 5/ 8 inc h diam eter drive bushi ngs. Page No. 1 2 3 Rev. No. 19 19 19 P886 Revision 19 SENSENICH 74D Series August 28, 2023 P886 2 NOTE 2. Model Designation . Model Designation M 74 D M S5 - 2 - 60 Designates design ch ange Pitch in inches at .75 radius station Designated cut -off i n inches from basic diamet er Designates a 5/ 4 or 1 1/4 i nch spacer thickness. “S” when used without a number is equival ent to S5 spacer. Designates hub conf i gurati on "C" - for install ation on SA E ARP -502 flanged shaft "M" or "M6" - for i nstal lation on SAE No. 2 flange shaft using 3/8" diameter attac hing bolts and 5/8" diamet er dri ve bushings. "R" - for install ation on SA E No. 3 flange shaft. Suffix numbers for hubs (as applicable) only stamped on propel le rs with Serial Number 26476 and up. Designates bl ade design Basic diam eter in inc hes Designates metal propeller Not included on propel lers with Serial No. 26474 & up, whi ch are otherwise the same. NOTE 3, 4, 5, 6, and 8. Not applicabl e. NOTE 7. Spacers . Sensenich spacer models are identified by flange codes (see NOTE 2) and spacer thickness designated based on mult i ples of 1/ 4 inch. See NOTE 9 for approved spacer l engt hs. NOTE 9. Special Limits . Table of Propeller -E ngi ne Combinati o ns Approved Vibrati onwi se for Use on Normal Cat egory Single -Engine T ractor Aircraft The maximum and minim um propell er diamet ers that can be us ed from a vibrati on standpoi nt are shown bel ow. No reduction bel ow the minimum diam eter listed is permissible si nce this figure includes the di ameter reduction allowable for repair purposes. Propeller Engine Max. D ia. Min. Dia. Model Model (Inches ) (Inches ) Placards 74DM 6, 74DM7 Spacers 0 to 3.5 inches incl. Lycoming O -320 Series 16 0 h.p. @ 2700 r. p.m. or less. 74 72 None 74DM 6, 74DM7 Spacers 0 to 3.5 inches incl. Lycoming O -290 -D, -D2, and -D2B Series 74 72 None 74DC Frankli n 6A4 -150 -B4 74 72 Avoid continuous operati on between 2150 & 2250 r. p. m. on ground and i n flight 74DR Frankli n 6A4 -165 -B3 74 72 Avoid continuous operati on between 2150 & 2250 r . p. m. on ground and i n flight 3 P886 NOTE 9. (Con't ) 74DC Frankli n 6A4 -165 -B4 74 72 Avoid continuous operat i on between 2150 & 2250 r. p. m. on ground and i n flight 74DR -1 Conti nental C -125 -2 73 71 None 74DR Cont i nental C -145 Series and Conti nental O -300 -A, -B, 145 h. p. @ 2700 r. p.m. or less. 74 72 None 74DC Conti nental O -300 -C, -D, and -E, 145 h.p. @ 2700 r.p.m. or l ess 74 72 None 74DC Conti nental IO -346 -A 165h.p. @ 2700 r.p.m. or less. 74 74 None NOTE 10. Special Notes . The work " eligi ble" as used herein does not signify approval. F or approval, complianc e with the applic able airc raft ai rworthi ness requirements is necessary. ... END ... ``` ## ADs (3, in force first) - [AD 2005-14-11](https://openairdocs.org/ad/2005-14-11): Failed propeller blade · Hartzell Propeller BHC-92W, BHC-92ZF-1, BHC-92ZF-3 and 391 more. Effective Aug 17, 2005 - [AD 2003-13-17](https://openairdocs.org/ad/2003-13-17): Propeller blade · Hartzell Propeller BHC-A2V, BHC-C2Y, EHC-G3YF-2 and 81 more. Effective Jul 18, 2003 - [AD 60-11-08](https://openairdocs.org/ad/60-11-08): Pilot Bore · Sensenich Propeller Manufacturing 74DM6 and 74DM7. Effective Nov 14, 1961 ## STCs approved under this data sheet (3) - [STC SP1774GL](https://openairdocs.org/stc/SP1774GL): Modify Sensenich propeller by removing propeller tip material to form a 45 deg chamfer.. Pegasus Innovations, LLC - [STC SP01222WI](https://openairdocs.org/stc/SP01222WI): Installation of Aircraft Development propeller vortelators.. Aircraft Development Co - [STC SP00582NY](https://openairdocs.org/stc/SP00582NY): Installation of Prop-Guard Polyurethane Protective Tape on the leading edge of metal propellers.. McFarlane Aviation, Inc. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.