TCDS P-257

Page No. 1 2 3 Rev. No. 6 6 6 DEPARTMENT OF TRANSPORTATION FEDERAL AVIATION ADMINISTRATION P-257 Revision 6 Hamilton Standard 12D November 1, 1977 TYPE CERTIFICATE DATA SHEET NO. P-257 Propellers of models described herein conforming with this data sheet (which is part of type certificate no. 257) 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 Hamilton Standard Division Division of United Technologies Corporation Windsor Locks, Connecticut 06096 Type Hydraulically controllable (see NOTES 3 and 4) Engine shaft SAE No. 40 or X (X indicates special shaft sizes for foreign engines are eligible.) Hub material Steel Blade material Aluminum alloy Number of blades 2 Hubs eligible 12D40 and 12DX (see NOTE 1) Blade Eligible Maximum Continuous Takeoff Diameter Limits Hub and Blade Weight (See Note 2) HP RPM HP RPM (See Note 2) (Max Diameter) NOTES 6095-0 to 6095-24 550 2400 605 2640 9' 6-7/8"- 7' 6-7/8" 172 lbs. (-0 to -24) 6096 is the left-hand version of 6095. 5 6101-0 to 6101-24 670 2200 740 2420 10'7/8" - 8' 7/8" 177 lbs. (-0 to -24) 6102 is the left-hand version of 6101. 5 6127-0 to 6127-21 670 2200 740 2420 10' 9-7/8"- 9' 7/8" 191 lbs. (-0 to -21) 6128 is the left-hand version of 6127. 5 6167-0 to 6167-24 550 2400 605 2640 9' 6-7/8" - 7' 6-7/8" 172 lbs. 6 (-0 to -24) 6168 is the left-hand version of 6167. 5 6237-0 to 6237-24 550 2400 605 2640 9' 6-7/8" - 7' 6-7/8" 172 lbs. 6 (-0 to -24) 6238 is the left-hand version of 6237. 5 6599-0 to 6599-18 550 2200 600 2250 10' 7/8" - 8' 6-7/8" 180 lbs. (-0 to -18) 6600 is the left-hand version of 6599. 5 P-257 Page 2 Certification basis Type Certificate No. 257 Production basis Production Certificate No. 14 NOTE 1. Hub Model Designation Minor change not affecting eligibility SAE propeller shaft size Blade shank size Number of blades 2 D 40 101- Major model type 1 NOTE 2. Blade Model Designation If used, indicates telescoped; "S," square cutoff Nominal reduction from basic diameter in inches Operational features (may indicate particular deicing assembly), does not affect eligibility. Aerodynamic and structural features If used, indicates shank fairing design. A 6101 C 18 T- - The blade model designation suffixed with "T" indicates a diameter reduction by telescoping. Blade models with square cutoffs in accordance with Hamilton Standard blade drawings are suffixed with "S." Telescoped blades and blades with a square cutoff are eligible at the same ratings and diameter limits as blades with standard cutoff. Diameter limits shown are nominal diameters of the assembled propeller and do not include the ± 1/8 inch manufacturing tolerance permissible for propellers with basic diameter less than 14 feet or ± 1/4 inch permissible for propellers with basic diameter 14 feet or larger. NOTE 3. Pitch Control. Eligible with Hamilton Standard manual control or constant speed governor only. NOTE 4. (1) Feathering. Not applicable. (2) Reversing. Not applicable. 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. NOTE 6. Interchangeable Blades. Blades with an "S" or "T" suffix (see NOTE 2) are not interchangeable aerodynamically or vibrationwise with each other or with blades having normal round cutoffs. Only blades listed in the same group of the following groups are aerodynamically similar. Only blades listed under the same type in any one group are structurally similar. A higher type number implies a higher strength. This is due to differences in alloys and in cold working of the blade surface. Type 1 includes standard alloy non-surface treated blades; Type 2, hard alloy non-surface treated blades; Type 3, hard alloy blades with cold worked shanks; Type 4, hard alloy blades with cold worked shanks and shot peened surfaces. Page 3 P-257 The following defines the degree to which these blades may be used interchangeably in the same diameter without a flight performance test and without a vibration survey: Type 2 blades may replace Type 1 blades in the same group, but not vice-versa. Type 3 blades may replace either Type 1 or Type 2 blades in the same group, but not vice-versa. Type 4 blades may replace either Type 1, Type 2, or Type 3 blades in the same group, but not vice-versa. Reference should always be made to the ratings of the blades, and blades with different model numbers cannot be incorporated in the same propeller unless the aircraft specification specifically permits this. Group Type 1 Type 2 Type 3 Type 4 (a) 6167 6237   NOTE 7. Accessories. Eligible with Hamilton Standard deicing slinger ring assemblies only. NOTE 8. Shank Fairings. Not applicable. NOTE 9. Special Limits. Not applicable. 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....