SERVICE LETTER. Model 1A162 Propeller, and the McCauley Fixed Pitch Propeller Service Manual.

Transcription

1 September 4, 2009 TITLE MODEL 1A162/TCD6754 PROPELLER SERVICE INFORMATION UPDATE TO: FAA-Approved Propeller Repair Stations, Aircraft Manufacturers, Owners and Operators EFFECTIVITY Model 1A162 Propeller, and the McCauley Fixed Pitch Propeller Service Manual. The information transmitted by Service Letter should be added to the McCauley Fixed Pitch Propeller Service Manual until the next revision is issued. REASON To provide service information for the model 1A162 propeller. DESCRIPTION The following service information for the 1A162 model propeller should be added to the McCauley Fixed Pitch Propeller Service Manual. The instructions in the manual apply to the 1A162/TCD6754 propeller except for the differences listed in the following paragraphs. 1. Basic Information: A. The following table provides additional information for the 1A162 model propeller. Propeller Model Basic Design Diameter Range (Inches) FAA Propeller Type Certificate No. Spacer Part Number Bolt Kit Part Number TCD6754 1A P-857 B-7925 B B. The propeller is approved for installation on the Cessna model 162 'Skycatcher' model airplane equipped with the Teledyne Continental Motors 0-200D model engine. The diameter range for this propeller installation is 66 to 67 inches ( to mm) with 54 inches pitch (standard). September 4, 2009 Page 1 of 10 TO OBTAIN SATISFACTORY RESULTS, PROCEDURES SPECIFIED IN THIS SERVICE INFORMATION MUST BE ACCOMPLISHED IN ACCORDANCE WITH ACCEPTED METHODS AND PREVAILING GOVERNMENT REGULATIONS. MCCAULEY PROPELLER SYSTEMS CANNOT BE RESPONSIBLE FOR THE QUALITY OF WORK PERFORMED IN ACCOMPLISHING THIS SERVICE INFORMATION. McCauley Propeller Systems PO Box 7704 Wichita, Kansas COPYRIGHT 2009 McCauley Propeller Systems

2 C. Propeller weight (including part number B-7925 Spacer) at maximum diameter (67 inches/ mm) is 24.4 pounds ( kg). D. The propeller is installed with bolt kit B Torque installed bolts 25 to 30 ft. pounds ( to N-m) torque (dry). E. Propeller Installation. WARNING: BE SURE THAT MAGNETO IS GROUNDED BEFORE TURNING PROPELLER OR CONNECTING EXTERNAL POWER. (1) Rotate the engine crankshaft so the number 1 cylinder is Top Dead Center (TDC) on its compression stroke. NOTE: When number 1 cylinder is TDC, the crankshaft finger with the flat spot will be positioned straight up at the 12 O'clock position. (2) Position the propeller on the engine crankshaft so the number 1 blade is clocked 60 degrees in the direction of engine rotation from TDC. NOTE: The number 1 blade will be located at approximately the 10 O'clock position when viewed from in front of the engine looking aft. 2. Hub Dimensions: A. Hub thickness inches (69.85 mm). B. Spacer thickness inches ( mm). C. Dowel engagement in propeller spacer inch (16.5 mm). D. Distance from the hub face (engine side) to blade centerline inches (35.56 mm) (nominal). E. The propeller installation is designed for the Teledyne Continental Motors Model O-200D engine using six 3/8 inch mounting bolts. 3. Blade Dimensions: A. A square shape propeller blade tip is required. B. Blade Dimensions: (Refer to Figure 1, Tables 1, 2, and 3.) Page 2 September 4, 2009

3 Figure 1. Blade Dimensions, Model 1A162 (Sheet 1) September 4, 2009 Page 3

4 TABLE 1. 1A162 ANGLES AND FACE ALIGNMENT 1A162 Blade Criteria Station Distance Face Alignment Edge Alignment from Centerline Inches mm Inches mm Inches mm Min. Max. Min. Max. Min. Max. Min. Max TABLE 2. 1A162 WIDTH AND THICKNESS (NEW BLADES) Station Distance 1A162 Blade Criteria Width Thickness from Centerline Inches mm Inches mm Inches mm Min. Max Min. Max Min. Max Min. Max Page 4 September 4, 2009

5 C. Propeller Blade Section Angles NOTE: The model 1A162 propeller is only approved for service with a 54 inch pitch. TABLE 3. SECTION ANGLES, 1A162 Station Section Angle (Degrees) at Specified Pitch (54 Inches) as manufactured Inspection Angle (Degrees) at Specified Pitch (54 Inches) [Two Points Favoring Trailing Edge Method} NOTE: The angle tolerances are and degrees from station 9 to station 18 and and degrees from station 18 to propeller tip. Like stations on both blades are not to vary by more than 0.20 degrees. The 1A162 propeller uses a Blackmac style curved face airfoil and inspections of the propeller blade angles should use the two points favoring trailing edge method. D. Maximum allowable bend for cold repair. (1) Refer to Figure 2. for maximum allowable cold bend repair information. September 4, 2009 Page 5

6 Figure 2. Maximum Allowable Bend for Cold Repair Page 6 September 4, 2009

7 E. Minimum width and thickness for repair. TABLE 4. 1A162 MINIMUM WIDTH AND THICKNESS (FOR REPAIR) 1A162 Blade Repair Criteria Minimum Width Minimum Thickness Station Distance from Centerline Inches mm Inches mm Inches mm Min. Min. Min. Min F. Balance Weights (1) Balance weights, A , A4640-2, and A are not to exceed 4 weights or inches (7.47 mm) maximum height of weight stack. Weights are to be attached with two A-1635-X screws and secured with inch (0.76 mm) diameter corrosion resistant lockwire. Propeller balance weights are to be installed by following the instructions in the Standard Procedures Manual, Section , Track and Balance. 4. Paint Specification A. Refer to Standard Practices Manual, section , Paint Instructions. This propeller is to be painted in accordance with paint scheme D Parts Information A. The following parts are applicable to the 1A162/TCD6754 propeller assembly/installation, refer to Figure 3. September 4, 2009 Page 7

8 Figure 3. Propeller Assembly, Model 1A162 (Sheet 1) Page 8 September 4, 2009

9 Index Number Part Number Description Quantity 1 D-7945 Spinner Shell 1 2 A Screw 12 3 A Washer A162 Propeller 1 5 A * Bolt 6 6 A * Washer 6 7 A * Washer 6 8 A * Nut 6 9 D-7962 Spinner Bulkhead 1 10 A-7952 Dowel - Hollow 2 11 B-7925 Spacer 1 12 C-7961 Front Support Assembly 1 * Bolt Kit part number B consists of 6 each A bolts, 6 each A washers, 6 each A washers, and 6 each A nuts. APPROVAL FAA approval has been obtained on technical data in this publication that affects product type design. September 4, 2009 Page 9

10 AIRWORTHINESS LIMITATIONS 1. Scope A. This section outlines the mandatory replacement times and inspection intervals for propeller components considered to be life limited, or to require monitoring through scheduled inspections. This section applies to items such as fatigue components and structures that are considered a part of the certification process. NOTE: The Airworthiness Limitations section is FAA Approved and specifies maintenance required under Parts and of the Code of Federal Regulations, unless an alternative program has been FAA approved. 2. Definition A. This section contains two paragraphs as outlined below. (1) Inspection Time Limits describes and lists components that are required to be inspected at specified intervals. The intervals specified represent the maximum time allowable between inspections. (2) Replacement Time Limits describes and lists life limited components that are to be replaced at a specific time. 3. Inspection Time Limits A. General (1) There are no inspection time limits for the model 1A162/TCD6754 propeller. (a) Refer to Service Bulletin 137[X] for McCauley's mandatory specified time between overhaul (TBO) and long term storage inspection requirements. 4. Replacement Time Limits A. General (1) There are no life limited components for the model 1A162/TCD6754 propeller. Page 10 September 4, 2009