SERVICE BULLETIN FUEL - MODIFICATION OF THE ENGINE DRIVEN FUEL PUMP SYSTEM

Transcription

1 Beech TITLE: FUEL - MODIFICATION OF THE ENGINE DRIVEN FUEL PUMP SYSTEM 1. Planning Information A. Effectivity (1) Airplanes Beechcraft Bonanza Model A36, Serials E-1946, E-2104, and E-2111 through E-3144; Beechcraft Baron Model 58, Serials TH-1472 through TH-1475, TH-1477 through TH-1486, TH- 1488, TH-1490 through TH-1497, and TH-1499 through TH If you are no longer in possession of the airplane, please forward this information to the present owner. (2) Spares B. Reason This Service Bulletin is being issued to replace the altitude compensating fuel pump with a standard engine driven fuel pump permitting the pilot to control mixture. C. Description Remove the existing altitude compensating fuel pump(s), replace with the new standard engine driven fuel pump(s) and either replace the fuel flow indicator(s) and install a placard, or retain the existing fuel flow indicator(s) and install two placards in accordance with the Accomplishment Instructions section of this Service Bulletin. The new standard engine driven fuel pumps must be changed on both engines of the Baron Model 58. The pumps are not to be intermixed. Raytheon Aircraft Company (RAC) issues Service Information for the benefit of owners and fixed base operators in the form of two classes of Service Bulletins. The first class, Mandatory Service Bulletins (red border) includes changes, inspections and modifications that could affect safety or crashworthiness. RAC also issues Service Bulletins with no red border which are designated as either recommended or optional in the compliance section within the bulletin. In the case of recommended Service Bulletins, RAC feels the changes, modifications, improvements or inspections will benefit the owner/operator and although highly recommended, Recommended Service Bulletins are not considered mandatory at the time of issuance. In the case of Optional Service Bulletins, compliance with the changes, modifications, improvements or inspections is at the owner/operator s discretion. Both classes are mailed to: (a) RAC Authorized Service Centers. (b) Owners of record on the FAA Aircraft Registration Branch List and the RAC International Owner Notification/Registration Service List. (c) Those having a publications subscription. Information on Owner Notification Service or subscription can be obtained through any RAC Authorized Service Center. As Mandatory Service Bulletins and Service Bulletins are issued, temporary notification in the Service Bulletin Master Index should be made until the index is revised. Warranty will be allowed only when specifically defined in the Service Bulletin and in accordance with the RAC Warranty Policy. Unless otherwise designated, RAC Mandatory Service Bulletins, Service Bulletins and RAC Kits are approved for installation on RAC airplanes in original or RAC modified configurations only. RAC Mandatory Service Bulletins, Service Bulletins and Kits may not be compatible with airplanes modified by STC installations or modifications other than RAC approved kits. 1 of 6

2 D. Compliance Raytheon Aircraft Company considers compliance to be at the owner s/operator s option. E. Approval The engineering data contained in this Service Bulletin is FAA approved. F. Manpower The following information is for planning purposes only: Estimated man-hours for the Bonanza Model A36: 7.0 hours. Suggested number of men: 1 man. Estimated man-hours for the Baron Model 58: 13.0 hours. Suggested number of men: 1 man. The above is an estimate based on experienced, properly equipped personnel complying with this Service Bulletin. Occasionally, after work has started, conditions may be found which could result in additional man-hours. G. Weight and Balance H. Electrical Load Data Not changed. I. Software Accomplishment Summary J. References Teledyne Continental Motors Service Information Directive SID97-3; Applicable Teledyne Continental Motors Maintenance Manual. K. Publications Affected It is recommended that a note "See Service Bulletin No " be made in the following: Beechcraft Bonanza Model 36, A36, A36TC, B36TC Illustrated Parts Catalog, P/N G10, or subsequent revision; Beechcraft Baron Model B55, E55, 58 Illustrated Parts Catalog, P/N E5, or subsequent revision. L. Interchangeability of Parts 2 of 6

3 M. Warranty Credit 2. Material Information A. Materials - Price and Availability Contact a Raytheon Aircraft Authorized Service Center for information. B. Industry Support C. Airplanes (1) The following parts required for this modification may be ordered through a Raytheon Aircraft Authorized Service Center: NOTE Option 1 replaces the existing Fuel Flow Indicator(s) and installs a placard. Option 2 retains the existing Fuel Flow Indicator(s) and installs two placards. OPTION 1 Model/Serial Part Number Description Quantity Per Airplane A36, Serials E-1946, E2104, and E-2111 through E-3144 * A1 Engine Driven Fuel Pump Fuel Pump Gasket Fuel Flow Indicator 1 58, Serials TH-1472 through TH-1475, TH-1477 through TH-1486, TH-1488, TH-1490 through TH-1497, and TH through TH-1840 * A1 Engine Driven Fuel Pump Fuel Pump Gasket Fuel Flow Indicator 2 3 of 6

4 OPTION 2 Model/Serial Part Number Description Quantity Per Airplane A36, Serials E-1946, E2104, and E-2111 through E-3144 * A1 Engine Driven Fuel Pump Fuel Pump Gasket Placard 1 58, Serials TH-1472 through TH-1475, TH-1477 through TH-1486, TH-1488, TH-1490 through TH-1497, and TH through TH-1840 * A1 Engine Driven Fuel Pump Fuel Pump Gasket Placard 1 *The engine driven fuel pump may be ordered as a rebuilt unit. For Model A36 airplanes, order P/N A1R, and for Model 58 airplanes, order P/N A1R. Raytheon Aircraft Company expressly reserves the right to supersede, cancel and/or declare obsolete, without prior notice, any parts or publications that may be referenced in this Service Bulletin. (2) The following materials may be obtained locally: Part Number Description Quantity Per Airplane MIL-I-10428A Isopropyl Alcohol As Required D. Spares E. Reidentified Parts F. Tooling - Price and Availability Refer to Teledyne Continental Motors Service Information Directive SID of 6

5 3. Accomplishment Instructions This Service Bulletin shall be accomplished as follows: A. Airplane NOTE Should any difficulty be encountered in accomplishing this Service Bulletin, contact Raytheon Aircraft Company at or Observe all Warnings and Cautions contained in the aircraft manuals referred to in this Service Bulletin. Whenever any part of this system is dismantled, adjusted, repaired or renewed, detailed investigation must be made on completion to make sure that distortion, tools, rags or any other loose articles or foreign matter that could impede the free movement and safe operation of the system are not present, and that the systems and installations in the work area are clean. (1) Remove all power from the airplane and disconnect the battery. (2) Place the fuel selector valves in the "OFF" position. The new standard engine driven fuel pumps must be changed on both engines of the Baron Model 58. The pumps are not to be intermixed. (3) Gain access to the engine driven fuel pump(s). (4) Remove the existing altitude compensating engine driven fuel pump(s) in accordance with the applicable Teledyne Continental Motors Maintenance Manual. (5) Install the new standard engine driven fuel pump(s) and new gasket(s) in accordance with the applicable Teledyne Continental Motors Maintenance Manual. (6) Place the fuel selector valves in the "ON" position. (7) Reconnect the battery and restore power to the airplane. (8) Operate the boost pump and leak check the engine driven fuel pump(s) and connections. (9) Perform Option 1 by replacing the existing fuel flow indicator(s) and install required placard, or perform Option 2 by installing two placards. Install the placard or placards as follows: (a) Clean the instrument panel with alcohol to the left and adjacent to the fuel flow indicator(s). (b) Install the placard(s) on the instrument panel to the left and adjacent to the fuel flow indicator(s). 5 of 6

6 OPTIONAL (c) Trim the placard(s) so that it does not overlap screw heads, instruments or instrument cutouts, and assure that instrument flanges do not overlap placard lettering. (10) Adjust the fuel system in accordance with Teledyne Continental Motors Service Information Directive SID97-3 with the following exceptions: (a) For the Model A36, follow the adjustment procedures for the IO-520-BB engine utilizing the pressure and flow values from Table 2 for the IO-550-B engine. Note 2 in Table 2, Table 4 and Chart 2 are not applicable. (b) For the Model 58, follow the adjustment procedures for the IO-520-CB engine utilizing the pressure and flow values from Table 2 for the IO-550-C engine. Note 2 in Table 2, Table 5 and Chart 3 are not applicable. (11) Ensure all work areas are clean and clear of tools and miscellaneous items of equipment. (12) Close any areas opened to gain access to the engine driven fuel pump(s). (13) Return airplane to service. B. Spares C. Record of Compliance Upon completion of this Service Bulletin, make an appropriate maintenance record entry. 6 of 6