{"id":147,"date":"2012-12-21T15:54:35","date_gmt":"2012-12-21T15:54:35","guid":{"rendered":"http:\/\/hartzellprop.com\/\/?page_id=147"},"modified":"2026-05-13T06:29:19","modified_gmt":"2026-05-13T11:29:19","slug":"sample-program-approvals","status":"publish","type":"page","link":"https:\/\/hartzellprop.com\/services\/technical-support\/sample-program-approvals\/","title":{"rendered":"Sample Program Approvals"},"content":{"rendered":"<p>Due to their critical nature, certain tasks in the overhaul process require evaluation by Hartzell to ensure they are being performed correctly. Hartzell inspects and evaluates samples of the processes and operations from propeller repair facilities from around the world. If a repair facility\u2019s sample is found to be acceptable they are added to the sample program approval listing for that operation. We recommend that if you are using a propeller shop that is not a Hartzell Recommended Service Facility (RSF) that you confirm that the shop has appropriate approvals. The following tasks require evaluation and approval by Hartzell:<\/p>\n<ul>\n<li>\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Cold Compression Rolling<\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0 Composite Blade Major Repair<\/li>\n<li>\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Composite Blade Erosion Shield replacement<\/li>\n<li>\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Blade Shank Modification<\/li>\n<li><b><b><\/b><\/b>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Pitch Change Knob Shot Peen<\/li>\n<li>\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Shot Peening<\/li>\n<li>\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Steel Hub Mounting Flange Rework<\/li>\n<\/ul>\n<p>To open PDF documents, the free Adobe Reader is required. <a href=\"http:\/\/get.adobe.com\/reader\/\" target=\"_new\" rel=\"noopener noreferrer\">Click here to download and install it.<\/a><\/p>\n<table style=\"width: 113.611%; height: 306px;\">\n<tbody>\n<tr style=\"height: 24px;\">\n<th style=\"height: 24px; width: 35.7777%;\">Title<\/th>\n<th style=\"height: 24px; width: 11.1749%; text-align: center;\">Date<\/th>\n<th style=\"height: 24px; width: 41.2566%;\">Description<\/th>\n<\/tr>\n<tr style=\"height: 66px;\">\n<td style=\"height: 40px; width: 35.7777%;\"><a href=\"https:\/\/hartzellprop.com\/SAMPLE-PROGRAM\/Coldroll.pdf\">Cold Compression Rolling<\/a><\/td>\n<td style=\"height: 40px; width: 11.1749%; text-align: center;\" align=\"center\">May 2026<\/td>\n<td style=\"height: 40px; width: 41.2566%;\">Listing of approved facilities for cold rolling<\/td>\n<\/tr>\n<tr style=\"height: 87px;\">\n<td style=\"height: 65px; width: 35.7777%;\"><a href=\"https:\/\/hartzellprop.com\/SAMPLE-PROGRAM\/Composite.pdf\">Composite Blade Major Repair<br \/>\nand Erosion Shield Replacement<\/a><\/td>\n<td style=\"height: 65px; width: 11.1749%; text-align: center;\" align=\"center\">May 2026<\/td>\n<td style=\"height: 65px; width: 41.2566%;\">Listing of approved facilities for composite blade O\/H<\/td>\n<\/tr>\n<tr style=\"height: 66px;\">\n<td style=\"height: 41px; width: 35.7777%;\"><a href=\"https:\/\/hartzellprop.com\/SAMPLE-PROGRAM\/MV-Mod.pdf\">MV Blade Shank Modification<\/a><\/td>\n<td style=\"height: 41px; width: 11.1749%; text-align: center;\" align=\"center\">May 2026<\/td>\n<td style=\"height: 41px; width: 41.2566%;\">Listing of approved facilities for MV shank modification<\/td>\n<\/tr>\n<tr style=\"height: 66px;\">\n<td style=\"height: 33px; width: 35.7777%;\"><a href=\"https:\/\/hartzellprop.com\/SAMPLE-PROGRAM\/Shotpeen.pdf\">Shot Peening<\/a><\/td>\n<td style=\"height: 33px; width: 11.1749%; text-align: center;\" align=\"center\">May 2026<\/td>\n<td style=\"height: 33px; width: 41.2566%;\">ATTENTION: Hartzell certification is no longer required. Click on the link to read the notification letter.<\/td>\n<\/tr>\n<tr style=\"height: 87px;\">\n<td style=\"height: 37px; width: 35.7777%;\"><a href=\"https:\/\/hartzellprop.com\/SAMPLE-PROGRAM\/PC-Knob-SP.pdf\">Pitch Change Knob Shot Peening<\/a><\/td>\n<td style=\"height: 37px; width: 11.1749%; text-align: center;\" align=\"center\">May 2026<\/td>\n<td style=\"height: 37px; width: 41.2566%;\">Listing of approved facilities for shot peening of pitch change knob<\/td>\n<\/tr>\n<tr style=\"height: 66px;\">\n<td style=\"height: 66px; width: 35.7777%;\"><a href=\"https:\/\/hartzellprop.com\/SAMPLE-PROGRAM\/Steel-Hub-Flange.pdf\">Steel Hub Mounting Flange Rework<\/a><\/td>\n<td style=\"height: 66px; width: 11.1749%; text-align: center;\" align=\"center\">May 2026<\/td>\n<td style=\"height: 66px; width: 41.2566%;\">Listing of approved facilities for steel hub flange rework<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div><\/div>\n<div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Due to their critical nature, certain tasks in the overhaul process require evaluation by Hartzell to ensure they are being performed correctly. Hartzell inspects and evaluates samples of the processes and operations from propeller repair facilities from around the world. If a repair facility\u2019s sample is found to be acceptable they are added to the [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":5527,"parent":1697,"menu_order":0,"comment_status":"open","ping_status":"open","template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"class_list":["post-147","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Sample Program Approvals | Hartzell Propeller Inc.<\/title>\n<meta name=\"description\" content=\"Hartzell requires their Recommended Service Facilities to maintain the required sample program approvals to perform critical required overhaul tasks.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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