TCDS P-847

Page No. 1 2 3 Rev. No. 7 7 7 DEPARTMENT OF TRANSPORTATION FEDERAL AVIATION ADMINISTRATION P-847 Revision 7 CURTISS C632S May 1, 1970 TYPE CERTIFICATE DATA SHEET NO. P-847 Propellers of models described herein conforming with this data sheet (which is part of type certificate no. 847) 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. Type Certificate Holder Curtiss-Wright Corporation Curtiss Division Caldwell, New Jersey 07006 Type Constant speed - Electrical (see NOTES 3 and 4) Engine shaft SAE No. 60 Hub material Steel Blade material Steel Number of blades 3 Hubs eligible C632S and C632S-B (see NOTE 1) Blade Eligible Maximum Continuous Takeoff Diameter Limits Hub and Blade Weight (See Note 2) HP RPM HP RPM (See Note 9) (Max Diameter) NOTES 740-6C2-0 to 1900 1170 2400 1260 13'1" - 11'1" 457 lbs. 6 740-6C2-24 (-0 to -24) 740-9C2-0 to 1900 1170 2500 1260 13'1" - 11'1" 484 lbs. 6 740-9C2-24 (-0 to -24) 744-4C2-0 to 1900 1170 2400 1260 13'1" - 11'1" 384 lbs. 6 744-4C2-24 (-0 to -24) 744-6C2-0 to 1900 1170 2400 1260 13'0" - 11'0" 404 lbs. 6 744-6C2-24 (-0 to -24) 744-10C2-0 to 1900 1170 2400 1260 13'1" - 11'1" 432 lbs. 6 744-10C2-24 (-0 to -24) 836-14C2-18 to 1900 1170 2400 1260 13'0" - 12'6" 409 lbs. 836-14C2-24 (-18 to -24) 837 is the left-hand version of 836. 5 850-4C2-0 to 2100 1050 2500 1230 15'1" - 13'1" 404 lbs. 850-4C2-24 (-0 to -24) 852-XC2-0 to 2100 1050 2500 1230 15'0" - 13'0" 413 lbs. 6 852-XC2-24 (-0 to -24) 853 is the left-hand version of 852. 5 Certification basis Type Certificate No. 847, issued 30 August 1946, reissued 2 January 1962. Production basis Production Certificate No. 8 P-847 Page 2 NOTE 1. Hub Model Designation The model designation of Curtiss hubs consists of a letter or a letter and a number suffixed to the basic model designation, for example: Basic Model Designation Suffix Special Assembly No. 2 General Design Series "A" "S" for steel blades No. 2 blade shank size 3-blade propeller Fits SAE No. 60 splined shaft Curtiss (manufacturer) 2AC 6 3 2 S - A change in the suffix letter indicates a design series change which may affect eligibility. Only those hubs listed are eligible. A change in the suffix number indicates a minor change which does not affect hub eligibility. NOTE 2. Blade Model Designation For hollow steel blades the model designation consists of a series of numbers and letters suffixed to the basic model number. For example: Basic Model Designation Suffix This number indicates reduction in inches from basic design diameter (as -30, diameter reduced 30"). Curtiss blade shank size Interchangeability designation. Number 1 appears on the basic design. Numbers 2, 3, etc., indicate minor changes affecting interchangeability. Basic model number. 852 4 C2 0- - A change in the Interchangeability Designation indicates a minor change. A blade model is eligible on an aircraft model when listed in the pertinent aircraft specification.* Blades of the same model with different suffixes are equally eligible as listed in NOTE 6, but only blades with a like suffix should be assembled in the same hub. *(Type Certificate Data Sheet) NOTE 3. Pitch Control. Eligible only with Curtiss manual control, constant speed governor, or automatic synchronizer. NOTE 4. (1) Feathering. Eligible with full feathering control and voltage booster installed in accordance with the propeller manufacturer's instructions. (2) Reversing. Eligible with reversing control and voltage booster installed in accordance with the propeller manufacturer's instructions. NOTE 5. Left-Hand Models. The left-hand version of an approved model propeller is eligible at the same rating and diameter limitations as listed for the right-hand model. Page 3 P-847 NOTE 6. Interchangeable Blades. Only blades listed in the same group of the following listed groups are sufficiently similar aerodynamically and vibrationwise to permit interchangeability in the same diameter without a flight test. Blades with different model numbers, however, should not be incorporated in the same propeller, and reference should always be made to the ratings of the blades. Group (a) 852-1C2-X, 852-2C2-X, 852-3C2-x (b) 744-4C2-X, 744-6C2-X, 744-10C2-X (c) 740-6C2-X, 740-9C2-X NOTE 7. Accessories. Not applicable. NOTE 8. Shank Fairings. Curtiss steel blades are considered suitable for installation of blade shank cuffs. Specific part numbers and weights of eligible cuffs will be shown on the pertinent aircraft specifications.* When blade shanks cuffs are installed, the propeller weight will be increased approximately 15 lbs. *(Type Certificate Data Sheet). NOTE 9. Special Limits. Actual basic propeller diameter varies with certain blades as shown below. Blade Actual Basic Propeller Diameter 852-1C2-0 15' 1.2" 852-2C2-0 14' 11.5" 952-3C2-0 14' 11.5" NOTE 10. Special Notes. The word "eligible" as used herein does not signify approval. For approval, compliance with the applicable aircraft airworthiness requirements is necessary. ....END....