TCDS P-255

Page No. 1 2 3 Rev. No. - - - DEPARTMENT OF TRANSPORTATION FEDERAL AVIATION ADMINISTRATION P-255 Hamilton Standard 2B November 17, 1970 TYPE CERTIFICATE DATA SHEET NO. P-255 Propellers of models described herein conforming with this data sheet (which is part of type certificate no. 255) 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 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 United Aircraft Corporation Windsor Locks, Connecticut 06906 Type Hydraulically controllable (see NOTES 3 and 4) Engine shaft SAE No. 20 Hub material Steel Blade material Aluminum alloy Number of blades 2 Hubs eligible 2B20, 50098, 50275 (see NOTES 1 and 4) Blade Eligible Maximum Continuous Takeoff Diameter Limits Hub and Blade Weight (See Note 2) HP RPM HP RPM (See Note 2) (Max Diameter) NOTES 6109-0 to 6109-30 350 2300 385 2530 9' 0" - 6' 6" 105 lbs. 6 (-0 to -30) 6110 is the left-hand version of 6109. 5 6135-0 to 6135-30 350 2300 385 2530 9' - 0"- 6' 6"" 106 lbs. 6 (-0 to -30) 6136 is the left-hand version of 6135. 5 6165-0 to 6165-18 200 2450 220 2695 8' 0" - 6' 6" 93 lbs. (-0 to -18) 6166 is the left-hand version of 6165. 5 6241-6 to 6241-30 320 2200 350 2420 8' 6" - 6' 6" 106 lbs. 8 (-6 to -30) 6242 is the left-hand version of 6241. 5, 8 Certification basis Type Certificate No. 255 Production basis Production Certificate No. 14 P-255 Page 2 NOTE 1. Hub Model Designation Minor change not affecting eligibility SAE propeller shaft size Blade shank size Number of blades 2 B 20 101- 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 6135 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. Feathering. 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. 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 an "S" or "T" suffix (see NOTE 2) are not interchangeable aerodynamically or vibrationwise with each other or with blades having normal round cutoffs. Blades with different model numbers should not be incorporated in the same propeller and reference should always be made to the ratings of the blades. Group (a) 6109 and 6135. NOTE 7. Accessories. Eligible with Hamilton Standard deicing slinger ring assemblies only. Page 3 P-255 NOTE 8. Shank Fairings. A letter and a dash prefix included in the blade model designation (as A-6241) indicates that the blade assembly includes molded shank fairings. Fairings are eligible only on those model blades specifically designated. The following procedure should be followed when determining if blades with molded shank fairings are eligible on a model aircraft. (a) Refer to the pertinent propeller Type Certificate Data Sheet and determine whether an assembly of the blade model in question is eligible to incorporate a molded shank fairing. (b) Refer to the pertinent aircraft Type Certificate Data Sheet and determine whether the same model blades with incorporated molded shank fairing is eligible in the propellers of that model aircraft. 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 airworthiness requirements is necessary. ....END....