Hartzell Propeller Inc. Service Letter HC-SL-30-279 De-ice: Hartzell De-ice Boots and De-ice Kits

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HARTZELL PROPELLER INC. SERVICE LETTER TRANSMITTAL SHEET HC-SL-30-279 De-ice: Hartzell De-ice Boots and De-ice Kits March 6, 2013 This page transmits a revision to Service Letter HC-SL-30-279. • Original Issue, dated May 19/08 • Revision 1, dated Oct 09/09 • Revision 2, dated Mar 11/11 • Revision 3, dated Nov 10/11 • Revision 4, dated Feb 15/12 • Revision 5, dated Aug 27/12 • Revision 6, dated Sept 05/12 • Revision 7, dated Nov 16/12 • Revision 8, dated Mar 06/13 Propeller assemblies that have complied with a previous revision of this Service Letter are not affected by this revision. FAA approval has been obtained on technical data in this publication that affects type design. Changes are shown by a change bar in the left margin of the revised pages. This revision is issued to change the following in the Service Letter: - Corrected the de-ice boot for the Cessna 441 This Service Letter has been reissued in its entirety. (This page is intentionally blank.) HARTZELL PROPELLER INC. SERVICE LETTER TRANSMITTAL SHEET HC-SL-30-279 De-ice: Hartzell De-ice Boots and De-ice Kits HARTZELL PROPELLER INC. SERVICE LETTER HC-SL-30-279 De-ice: Hartzell De-ice Boots and De-ice Kits HC-SL-30-279 Page 1 of 6 May 19/08 Revision 8, dated Mar 06/13 1. Planning Information A. Effectivity (1) Hartzell Propeller Inc. propellers installed on aircraft listed in Table 1 of this Service Letter are affected by this Service Letter. CAUTION: DO NOT USE OBSOLETE OR OUTDATED INFORMATION. PERFORM ALL INSPECTIONS OR WORK IN ACCORDANCE WITH THE MOST RECENT REVISION OF THIS SERVICE LETTER. INFORMATION CONTAINED IN THIS SERVICE LETTER MAY BE SIGNIFICANTLY CHANGED FROM EARLIER REVISIONS. FAILURE TO COMPLY WITH THIS SERVICE LETTER OR THE USE OF OBSOLETE INFORMATION MAY CREATE AN UNSAFE CONDITION THAT MAY RESULT IN DEATH, SERIOUS BODILY INJURY, AND/OR SUBSTANTIAL PROPERTY DAMAGE. REFER TO THE SERVICE LETTER INDEX FOR THE MOST RECENT REVISION LEVEL OF THIS SERVICE LETTER. B. Concurrent Requirements (1) Additional service documents may apply to the components/propellers affected by this Service Letter. Compliance with additional service documents may be necessary in conjunction with the completion of the Accomplishment Instructions in this Service Letter. Refer to the Hartzell Propeller Inc. website at www.hartzellprop.com for a cross-reference of service documents. C. Reason (1) An aircraft may have propeller mounted ice protection system components that have been supplied by Hartzell Propeller Inc. or by manufacturers other than Hartzell Propeller Inc. (2) Hartzell Propeller Inc. has received reports of fit and/or durability problems with certain propeller mounted ice protection system components installed on aircraft listed in Table 1 of this Service Letter. (3) Hartzell Propeller Inc. has designed replacement propeller mounted ice protection system components to correct fit and/or durability problems. (4) The installation procedures for new components, when different than currently installed component, are specified in Table 1 of the Service Letter. (5) This Service Letter introduces and approves replacement propeller mounted ice protection system components approved under Part 35. Additional FAA approval under 14 Code of Federal Regulations (CFR) Part 23 and 25 is not required for field installation of these replacement components. Icing certification is not affected by this change. © 2008, 2009, 2011, 2012, 2013 - Hartzell Propeller Inc. - All rights reserved HARTZELL PROPELLER INC. SERVICE LETTER HC-SL-30-279 De-ice: Hartzell De-ice Boots and De-ice Kits May 19/08 Revision 8, dated Mar 06/13 HC-SL-30-279 Page 2 of 6 D. Description (1) This document provides Instructions for Continued Airworthiness (ICA). (2) This Service Letter introduces propeller mounted ice protection system components manufactured by Hartzell Propeller Inc. When installed on an aircraft approved for use with Hartzell Propeller Inc. propellers, the Hartzell Propeller Inc. components are FAA approved alternates for the currently approved components as shown in Table 1 of this Service Letter. (a) Refer to Hartzell Propeller Inc. Application Guide 159 (61-02-59) for approved Hartzell Propeller Inc. propeller and de-ice installations. E. Approval (1) FAA acceptance has been obtained on technical data in this publication that affects type design. F. Compliance (1) To determine installation eligibility, refer to Table 1 of this Service Letter or Hartzell Propeller Inc. Application Guide 159. (2) When replacement is required, (a) Refer to Table 1 of this Service Letter for propeller mounted ice protection system components manufactured by Hartzell Propeller Inc. G. Weight and Balance (1) Not changed H. Electrical Load Data (1) Not changed CAUTION: DO NOT USE OBSOLETE OR OUTDATED INFORMATION. PERFORM ALL INSPECTIONS OR WORK IN ACCORDANCE WITH THE MOST RECENT REVISION OF A DOCUMENT. I. References (1) Hartzell Propeller Inc. Service Letter HC-SL-30-260 (2) Hartzell Propeller Inc. Service Letter HC-SL-30-284 (3) Hartzell Propeller Inc. Service Letter HC-SL-30-285 (4) Hartzell Propeller Inc. Service Letter HC-SL-30-295 HARTZELL PROPELLER INC. SERVICE LETTER HC-SL-30-279 De-ice: Hartzell De-ice Boots and De-ice Kits HC-SL-30-279 Page 3 of 6 May 19/08 Revision 8, dated Mar 06/13 (5) Hartzell Propeller Inc. Service Letter HC-SL-30-306 (6) Hartzell Propeller Inc. Service Letter HC-SL-30-307 (7) Hartzell Propeller Inc. Service Letter HC-SL-30-309 (8) Hartzell Propeller Inc. Service Letter HC-SL-30-310 (9) Hartzell Propeller Inc. Service Letter HC-SL-30-311 (10) Hartzell Propeller Inc. Service Letter HC-SL-30-312 (11) Hartzell Propeller Inc. Service Letter HC-SL-30-313 (12) Hartzell Propeller Inc. Service Letter HC-SL-30-314 (13) Hartzell Propeller Inc. Service Letter HC-SL-30-315 (14) Hartzell Propeller Inc. Service Letter HC-SL-30-316 (15) Hartzell Propeller Inc. Service Letter HC-SL-30-317