{"id":2086,"date":"2016-05-17T12:50:20","date_gmt":"2016-05-17T17:50:20","guid":{"rendered":"http:\/\/www.airdorrin.com\/?p=2086"},"modified":"2016-05-17T12:53:02","modified_gmt":"2016-05-17T17:53:02","slug":"may-17-2016-altimatic-iiib-testing-plan","status":"publish","type":"post","link":"https:\/\/www.airdorrin.com\/?p=2086","title":{"rendered":"May 17, 2016 Altimatic IIIB Testing Plan"},"content":{"rendered":"<p>Recently I had a recurrence of an autopilot pitch mode issue. I first noticed this on a Feb 8th Angel Flight earlier this year. In that case, a sudden pitch down deviation got my heart going, but shutting things off and back on again returned to normal operation.\u00a0You can <a href=\"http:\/\/www.airdorrin.com\/?p=1889\">read about that here<\/a>, including some diagnostics I&#8217;d done on my own at the time.<\/p>\n<p>My involvement down at DAMF has opened up a host of new resources and references. The guys there got me hooked up with an expert down in South Carolina that offered to guide me through the diagnostics to see what is wrong.<\/p>\n<p>This post is basically the flight plan that I will perform over the next few days to drill down into the problem. Use the Tab layout to quickly refer back to the diagrams for the A\/P and the Coupler. Use the scripts to run the test and understand each piece.<\/p>\n<p><span style=\"color: #0000ff;\"><\/span><\/p>\n<p><span style=\"color: #0000ff;\"><\/span><\/p>\n<p><span style=\"color: #0000ff;\"><\/span><\/p>\n<p><span style=\"color: #0000ff;\"><\/span><\/p>\n<p><span style=\"color: #0000ff;\"><\/span><\/p>\n<p><span style=\"color: #0000ff;\"><\/p>\n<p><span style=\"color: #0000ff;\"><div class=\"wordpress-post-tabs tabs_2086_0_wrap wordpress-post-tabs-skin-gray\"\"><div id=\"tabs_2086_0\"><ul><li><a href=\"https:\/\/www.airdorrin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fposts%2F2086#tabs-2086-0-0\" ><\/a><\/li><li><a href=\"https:\/\/www.airdorrin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fposts%2F2086#tabs-2086-0-1\" >Nav\/Appr Coupler<\/a><\/li><li><a href=\"https:\/\/www.airdorrin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fposts%2F2086#tabs-2086-0-2\" >2\/8\/16 Flight<\/a><\/li><li><a href=\"https:\/\/www.airdorrin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fposts%2F2086#tabs-2086-0-3\" >Normal <\/a><\/li><li><a href=\"https:\/\/www.airdorrin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fposts%2F2086#tabs-2086-0-4\" >Pitch<\/a><\/li><li><a href=\"https:\/\/www.airdorrin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fposts%2F2086#tabs-2086-0-5\" >Roll<\/a><\/li><\/ul><div class=\"wpts_cl\"><\/div><div id=\"tabs-2086-0-0\"><\/div><div id=\"tabs-2086-0-1\"><p><\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"color: #0000ff;\"><strong>NAV\/APPROACH COUPLER<\/strong><\/span><\/p>\n<p><span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"http:\/\/www.airdorrin.com\/?attachment_id=2091\" rel=\"attachment wp-att-2091\"><img decoding=\"async\" class=\"size-medium wp-image-2091 aligncenter\" src=\"http:\/\/www.airdorrin.com\/wordpress\/wp-content\/uploads\/2016\/05\/Screen-Shot-2016-05-17-at-11.15.55-AM-300x191.png\" alt=\"Screen Shot 2016-05-17 at 11.15.55 AM\" width=\"300\" height=\"191\" srcset=\"https:\/\/www.airdorrin.com\/wordpress\/wp-content\/uploads\/2016\/05\/Screen-Shot-2016-05-17-at-11.15.55-AM-300x191.png 300w, https:\/\/www.airdorrin.com\/wordpress\/wp-content\/uploads\/2016\/05\/Screen-Shot-2016-05-17-at-11.15.55-AM-768x488.png 768w, https:\/\/www.airdorrin.com\/wordpress\/wp-content\/uploads\/2016\/05\/Screen-Shot-2016-05-17-at-11.15.55-AM-1024x651.png 1024w, https:\/\/www.airdorrin.com\/wordpress\/wp-content\/uploads\/2016\/05\/Screen-Shot-2016-05-17-at-11.15.55-AM.png 1073w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/span><\/p>\n<ul>\n<li style=\"text-align: left;\"><span style=\"color: #0000ff;\">NAV and OMNI modes are not used<\/span><\/li>\n<li style=\"text-align: left;\"><span style=\"color: #0000ff;\">HDG Heading\u00a0mode is required for GPSS<\/span><br \/>\n<span style=\"color: #0000ff;\"> <em><span style=\"color: #0000ff;\">note that Jerry recommends using LOC mode all the time to resolve the roll mode issue I&#8217;ve noticed<\/span><\/em><\/span><\/li>\n<li style=\"text-align: left;\"><span style=\"color: #0000ff;\">LOC\/NORM mode is used when in approach mode and intending to use the glideslope coupler<\/span><\/li>\n<li style=\"text-align: left;\"><span style=\"color: #0000ff;\">LOC\/REV mode is intended to be used on a localizer backcourse. Obsoleted by the use of GPS overlay and the lack of practice otherwise.<\/span><\/li>\n<\/ul>\n<p style=\"text-align: left;\"><span style=\"color: #0000ff;\"><\/p><\/div><div id=\"tabs-2086-0-2\"><p><\/span><\/p>\n<p><em><span style=\"color: #0000ff;\">These notes were taken during the initial 2\/8\/16 Angel flight where the pitch issue first reared it&#8217;s ugly head. They are included here for my own later reference, and of course, for any value they may bring to you.<\/span><\/em><\/p>\n<p><span style=\"color: #0000ff;\">Setting up altitude hold mode after reaching the desired altitude, the nose pitches down aggressively. I disengage everything except Button #1 \u2013 Roll Control, and make sure the Roll Command Knob is centered \u2013 Knob #3. \u00a0Button #1 is ON\u00a0and #2,4, and 8 are\u00a0OFF. This is a wing leveler mode where Knob\u00a0#3 will bank the aircraft left and right. Resistance should be present in the yoke roll movement, but no resistance in pitch.<\/span><\/p>\n<p><span style=\"color: #0000ff;\">Continuing to active the autopilot functions to identify the problem circuit, I re-engaged Button #2 for the heading mode. Now the airplane will follow the heading bug on the Aspen. Selecting GPSS on the Aspen changes the heading mode into GPSS tracking, and the airplane begins to track the GPS course from\u00a0the Garmin 530 WAAS.<\/span><\/p>\n<p><span style=\"color: #0000ff;\">At this point \u2013 Roll mode buttons #1 and #2 are in (On\/Engaged). Pitch mode buttons #4 and #8 are off (Out\/Disengaged). The autopilot is flying the airplane on course, but altitude is done manually with yoke and trim.<\/span><\/p>\n<p><span style=\"color: #0000ff;\">Once again attempting to capture and hold altitude while in level flight, I engage Pitch Control \u2013 Button #8. If the Pitch Command Disk \u2013 Knob #5 \u2013\u00a0isn\u2019t centered, the airplane will climb or descend accordingly. Center the disk and use\u00a0the Altitude Selector Knob #7 to set the Trim Indicator #6 to level flight. Move the Calibrated Altitude Indicator #9 to the current altitude.<\/span><\/p>\n<p><span style=\"color: #0000ff;\">You are in level flight and at the assigned altitude. Engage the Altitude Select\/Pre-select Button #4. The airplane should hold the current altitude and the Trim Indicator #6 should remain level or continuously return to level in up an down drafts.<\/span><\/p>\n<p><span style=\"color: #0000ff;\">During this last step, engaging Button #4 causes the Trim Indicator #6 to show a strong down deflection and the autopilot to respond with an aggressive push-down. Hmmm.. \u00a0Definitely broken.<\/span><\/p>\n<p><span style=\"color: #0000ff;\">I turn everything OFF on the autopilot. The Roll Control Button #1 is also the master switch, so I ensure it is all OFF. I want to try this again to see if a reset helped. \u00a0So far the issue is associated with Button #4 and indicated by Trim Indicator #6.<\/span><\/p>\n<p><span style=\"color: #0000ff;\">With everything turned off and then restarted as above \u2013 I flew home for the next 90+ minutes with no issues what so ever. \u00a0During the last leg home, I flew a GPS approach with vertical navigation, and the glideslope coupler worked flawlessly.<\/span><\/p>\n<p><span style=\"color: #0000ff;\">I will continue to watch this, but it brings emphasis to the point that hand flying skills must remain sharp. Imagine a strong push down while flying an approach to minimums in trying weather. Always be ready to take over.<\/span><\/p>\n<p><span style=\"color: #0000ff;\">Fly Safe.<\/span><\/p>\n<p><span style=\"color: #0000ff;\"><\/p><\/div><div id=\"tabs-2086-0-3\"><p><\/span><\/p>\n<p><span style=\"color: #0000ff;\"><b><span style=\"color: #0000ff;\">Test Plan for Normal Operations:<\/span> <\/b>Utilize the autopilot as in normal operations, in an attempt to replicate and video the issues.<\/span><\/p>\n<ol>\n<li><span style=\"color: #0000ff;\">All A\/P\u00a0switches &#8211; OFF<\/span><\/li>\n<li><span style=\"color: #0000ff;\">Climb to 3000&#8242; or better<\/span><\/li>\n<li><span style=\"color: #0000ff;\">Establish level attitude on a known\u00a0heading<\/span><\/li>\n<li><span style=\"color: #0000ff;\">Trim aircraft by hand<\/span><\/li>\n<li><span style=\"color: #0000ff;\">CENTER\u00a0Roll Command Button #3<\/span><\/li>\n<li><span style=\"color: #0000ff;\">A\/P Master switch (Button #1) &#8211; ON<\/span><br \/>\n<span style=\"color: #0000ff;\"> <em><span style=\"color: #0000ff;\">This engages the roll mode by default and automatically activates button #3 to act as a wind leveler<\/span>.\u00a0<\/em><\/span><\/li>\n<li><span style=\"color: #0000ff;\">NAV\/APPR Coupler to HDG<\/span><br \/>\n<span style=\"color: #0000ff;\"> <em><span style=\"color: #0000ff;\">This is the normal setting and nothing happens yet. If heading button #2 is engaged at this point, the autopilot will follow the either the heading bug or the GPS Course loaded in the Garmin 530,\u00a0according\u00a0the Aspen GPSS setting (heading or GPSS).\u00a0<\/span><\/em><\/span><\/li>\n<li><span style=\"color: #0000ff;\">SET ASPEN GPSS to GPSS (with a course in the Garmin 530)<\/span><br \/>\n<span style=\"color: #0000ff;\"> <em>Aircraft turns to follow the course loaded in the Garmin.\u00a0<\/em><\/span><\/li>\n<li><span style=\"color: #0000ff;\">SET\u00a0ASPEN\u00a0Heading Bug to current heading.<\/span><\/li>\n<li><span style=\"color: #0000ff;\">A\/P Heading Mode (Button #2) &#8211; ON<\/span><br \/>\n<span style=\"color: #0000ff;\"> <em><span style=\"color: #0000ff;\">Roll Command Knob is deactivated when the heading mode is on. Aircraft rolls to follow either heading bug or course guidance, depending on ASPEN GPSS setting.\u00a0Note that no pitch mode is yet active. Pitch is managed manually.<\/span><br \/>\n<\/em><\/span><\/li>\n<li><span style=\"color: #0000ff;\">CENTER Pitch Command Disk &#8211; Wheel #5<\/span><\/li>\n<li><span style=\"color: #0000ff;\">A\/P Pitch (Button #8) &#8211; ON<\/span><br \/>\n<span style=\"color: #0000ff;\"> <em>Pitch mode\u00a0is engaged at this point and the pitch wheel is automatically activated (wheel #5).\u00a0Aircraft will pitch according to Pitch Command Disk.<\/em><\/span><\/li>\n<li><span style=\"color: #0000ff;\">Calibrate Pitch Indicator #6 by adjusting Altitude Selector Knob #7 until a level indication is attained (indicator #6).<\/span><\/li>\n<li><span style=\"color: #0000ff;\">Engage Button #4, Altitude Hold<\/span><\/li>\n<li><span style=\"color: #0000ff;\"><strong>Look for and document issues in pitch and roll and record findings<\/strong><\/span><\/li>\n<\/ol>\n<p><span style=\"color: #0000ff;\"><\/p><\/div><div id=\"tabs-2086-0-4\"><p><\/span><\/p>\n<p><span style=\"color: #0000ff;\"><strong>Test Plan for Determining the source of the Pitch Oscillations:\u00a0<\/strong>The pitch issue could be caused by a trim sensor, servo, or altitude hold module. This test script will determine which it is.<\/span><\/p>\n<ol>\n<li><span style=\"color: #0000ff;\">All A\/P\u00a0switches &#8211; OFF<\/span><\/li>\n<li><span style=\"color: #0000ff;\">Climb to 3000&#8242; or better<\/span><\/li>\n<li><span style=\"color: #0000ff;\">Establish level attitude on a known\u00a0heading<\/span><\/li>\n<li><span style=\"color: #0000ff;\">Trim aircraft by hand<\/span><\/li>\n<li><span style=\"color: #0000ff;\">CENTER\u00a0Roll Command Button #3<\/span><\/li>\n<li><span style=\"color: #0000ff;\">A\/P Master switch (Button #1) &#8211; ON<\/span><br \/>\n<span style=\"color: #0000ff;\"><em><span style=\"color: #0000ff;\">This engages the roll mode by default and automatically activates button #3 to act as a wind leveler<\/span>.\u00a0<\/em><\/span><\/li>\n<li><span style=\"color: #0000ff;\">NAV\/APPR Coupler to HDG<\/span><br \/>\n<span style=\"color: #0000ff;\"><em><span style=\"color: #0000ff;\">This is the normal setting and nothing happens yet. If heading button #2 is engaged at this point, the autopilot will follow the either the heading bug or the GPS Course loaded in the Garmin 530,\u00a0according\u00a0the Aspen GPSS setting (heading or GPSS)<\/span>.\u00a0<\/em><\/span><\/li>\n<li><span style=\"color: #0000ff;\">SET ASPEN GPSS to GPSS (with a course in the Garmin 530)<\/span><br \/>\n<span style=\"color: #0000ff;\"><em><span style=\"color: #0000ff;\">Aircraft turns to follow the course loaded in the Garmin<\/span>.\u00a0<\/em><\/span><\/li>\n<li><span style=\"color: #0000ff;\">SET\u00a0ASPEN\u00a0Heading Bug to current heading.<\/span><\/li>\n<li><span style=\"color: #0000ff;\">A\/P Heading Mode (Button #2) &#8211; ON<\/span><br \/>\n<span style=\"color: #0000ff;\"><em><span style=\"color: #0000ff;\">Roll Command Knob is deactivated when the heading mode is on. Aircraft rolls to follow either heading bug or course guidance, depending on ASPEN GPSS setting.\u00a0Note that no pitch mode is yet active. Pitch is managed manually<\/span>.<br \/>\n<\/em><\/span><\/li>\n<li><span style=\"color: #0000ff;\">CENTER Pitch Command Disk &#8211; Wheel #5<\/span><\/li>\n<li><span style=\"color: #0000ff;\">PULL Circuit Breaker for Pitch Trim<\/span><\/li>\n<li><span style=\"color: #0000ff;\"><span style=\"color: #0000ff;\"><span style=\"color: #0000ff;\">A\/P Pitch (Button #8) &#8211; ON<br \/>\n<\/span><\/span><\/span><em>Pitch control is driving ONLY the pitch servo at this point, and the pitch trim is not involved. Remember that pitch trim is used to relieve the load on the pitch servo (think like an STEC 30).<\/em><em>If the problem recurs at this point &#8211; <strong>SERVO HAS FAILED<\/strong><\/em><br \/>\n<em>if not&#8230;. \u00a0 <strong>CONTINUE<\/strong><\/em><\/li>\n<li><span style=\"color: #0000ff;\"><span style=\"color: #0000ff;\">CLOSE Circuit Breaker for Pitch Trim<br \/>\n<\/span><\/span><em>If the problem recurs at this point &#8211; <strong>PITCH TRIM SENSOR\u00a0HAS FAILED<\/strong><\/em><br \/>\n<em>if not&#8230;. \u00a0 <strong>CONTINUE<\/strong><\/em><\/li>\n<li><span style=\"color: #0000ff;\">Calibrate Pitch Indicator #6 by adjusting Altitude Selector Knob #7 until a level indication is attained (indicator #6).<\/span><\/li>\n<li><span style=\"color: #0000ff;\"><span style=\"color: #0000ff;\">Engage Button #4, Altitude Hold<br \/>\n<\/span><\/span><em>If the problem recurs at this point &#8211; A<strong>LTITUDE HOLD MODULE\u00a0HAS FAILED<br \/>\n<\/strong><\/em><br \/>\n<em>if not&#8230;. \u00a0\u00a0<strong>KEEP FLYING UNTIL YOU CAN REPLICATE THE PROBLEM<\/strong><\/em><\/li>\n<\/ol>\n<p><span style=\"color: #0000ff;\"><\/p><\/div><div id=\"tabs-2086-0-5\"><p><\/span><\/p>\n<p><span style=\"color: #0000ff;\"><strong>Test Plan for Determining the source of the Roll\u00a0Oscillations:<\/strong>\u00a0First of all, an expert I&#8217;ve been referred to\u00a0recommends only using localizer mode for roll control. This is counter to what I&#8217;ve been told after avionics upgrade, but makes sense and is worth a try.\u00a0<\/span><\/p>\n<p><span style=\"color: #0000ff;\">We will be leaving pitch control deactivated in all modes for this test, and trim by hand.<\/span><\/p>\n<ol>\n<li><span style=\"color: #0000ff;\">All A\/P\u00a0switches &#8211; OFF<\/span><\/li>\n<li><span style=\"color: #0000ff;\">Climb to 3000&#8242; or better<\/span><\/li>\n<li><span style=\"color: #0000ff;\">Establish level attitude on a known\u00a0heading<\/span><\/li>\n<li><span style=\"color: #0000ff;\">Trim aircraft by hand<\/span><\/li>\n<li><span style=\"color: #0000ff;\">CENTER\u00a0Roll Command Button #3<\/span><\/li>\n<li><span style=\"color: #0000ff;\">A\/P Master switch (Button #1) &#8211; ON<\/span><br \/>\n<span style=\"color: #0000ff;\"><span style=\"color: #0000ff;\"><em><span style=\"color: #0000ff;\">This engages the roll mode by default and automatically activates button #3 to act as a wind leveler. We are going to leave pitch control off in this test<\/span>.<\/em><\/span><\/span>Look for roll oscillation in this condition. Only wing leveler mode is active.<em>If the problem recurs at this point &#8211; <strong>ROLL SERVO\u00a0HAS FAILED,<br \/>\n<\/strong>and takes 1\/2 day to get to it.<\/em><br \/>\n<em>if not&#8230;. \u00a0\u00a0<strong>CONTINUE<\/strong><\/em><\/li>\n<li><span style=\"color: #0000ff;\">NAV\/APPR Coupler to HDG<\/span><br \/>\n<span style=\"color: #0000ff;\"><em><span style=\"color: #0000ff;\">This is the normal setting and nothing happens yet. If heading button #2 is engaged at this point, the autopilot will follow the either the heading bug or the GPS Course loaded in the Garmin 530,\u00a0according\u00a0the Aspen GPSS setting (heading or GPSS)<\/span>.\u00a0<\/em><\/span><\/li>\n<li><span style=\"color: #0000ff;\">SET ASPEN GPSS to HDG<\/span><br \/>\n<span style=\"color: #0000ff;\"><i>Note whether or not the wing rock is present. Try different headings.<\/i><\/span><span style=\"color: #0000ff;\"><em><br \/>\n<\/em><\/span><\/li>\n<li><span style=\"color: #0000ff;\">SET\u00a0ASPEN\u00a0Heading Bug to current heading.<\/span><\/li>\n<li><span style=\"color: #0000ff;\">A\/P Heading Mode (Button #2) &#8211; ON<\/span><br \/>\n<span style=\"color: #0000ff;\"><em><span style=\"color: #0000ff;\">Roll Command Knob is deactivated when the heading mode is on. Aircraft rolls to follow either heading bug or course guidance, depending on ASPEN GPSS setting.\u00a0<\/span><\/em><\/span><em>If the problem recurs at this point, it may be that the <strong>ROLL MODULE\u00a0HAS FAILED \u00a0<\/strong>[not real clear on the component failure here]<\/em><\/li>\n<li><span style=\"color: #0000ff;\">SET ASPEN GPSS to HDG<br \/>\n<\/span><i>Note whether or not the wing rock is present in this condition.<\/i><\/li>\n<\/ol>\n<\/div><div class=\"wpts_cl\"><\/div><div class=\"wpts_cr\"><\/div><\/div><div style=\"text-align:right;\"><a style=\"color:#aaa;font-size:9px\" href=\"http:\/\/tabbervilla.com\/wordpress-post-tabs\/\" title=\"WordPress Post Tabs by TabberVilla\" target=\"_blank\">WP Post Tabs<\/a><\/div><\/div><script type=\"text\/javascript\">\t\t\t\t\t\tjQuery(function() {jQuery( \"#tabs_2086_0\" ).posttabs({ tabname : \"tabs_2086_0\",\t\t\t\t\tfade \t: \"0\",\t\t\t\t\tactive\t: \"\",\t\t\t\t\treload\t: \"0\",\t\t\t\t\tnav\t: \"1\",\t\t\t\t\tnexttext: \"Next \u00bb\",\t\t\t\t\tprevtext: \"\u00ab Prev\",\t\t\t\t\tenablecookie:\"0\"\t\t\t\t});})<\/script> <\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Recently I had a recurrence of an autopilot pitch mode issue. I first noticed this on a Feb 8th Angel Flight earlier this year. In that case, a sudden pitch down deviation got my heart going, but shutting things off and back on again returned to normal operation.\u00a0You can read about that here, including some [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"gallery","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-2086","post","type-post","status-publish","format-gallery","hentry","category-home-page","post_format-post-format-gallery"],"_links":{"self":[{"href":"https:\/\/www.airdorrin.com\/index.php?rest_route=\/wp\/v2\/posts\/2086","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.airdorrin.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.airdorrin.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.airdorrin.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.airdorrin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2086"}],"version-history":[{"count":33,"href":"https:\/\/www.airdorrin.com\/index.php?rest_route=\/wp\/v2\/posts\/2086\/revisions"}],"predecessor-version":[{"id":2121,"href":"https:\/\/www.airdorrin.com\/index.php?rest_route=\/wp\/v2\/posts\/2086\/revisions\/2121"}],"wp:attachment":[{"href":"https:\/\/www.airdorrin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2086"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.airdorrin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2086"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.airdorrin.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2086"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}