{"id":15432,"date":"2019-06-12T09:16:07","date_gmt":"2019-06-12T09:16:07","guid":{"rendered":"https:\/\/one.sightlinemg.com\/defensenews\/uncategorized\/2019\/06\/12\/the-marine-corps-no-1-priority-for-the-f-35-involves-a-rough-landing-in-hot-environments\/"},"modified":"2026-08-07T21:34:53","modified_gmt":"2026-08-07T21:34:53","slug":"the-marine-corps-no-1-priority-for-the-f-35-involves-a-rough-landing-in-hot-environments","status":"publish","type":"post","link":"https:\/\/one.sightlinemg.com\/defensenews\/air\/2019\/06\/12\/the-marine-corps-no-1-priority-for-the-f-35-involves-a-rough-landing-in-hot-environments\/","title":{"rendered":"The Marine Corps\u2019 \u2018No. 1 priority\u2019 for the F-35 involves a rough landing in hot environments"},"content":{"rendered":"\n

WASHINGTON \u2014 It was a hot day aboard the amphibious assault ship Essex<\/a> when a pilot brought his F-35B in for what is known as a \u201cmode four\u201d flight operation, where the jet enters hover mode near a landing spot, slides over to the target area and then vertically lands onto the ship<\/a>.<\/p>\n\n\n\n

It\u2019s a key part of the F-35B\u2019s short-takeoff-and-vertical-landing capability, known as STOVL. And normally, everything in a \u201cmode four\u201d landing goes smoothly. But on this day, when the pilot triggered the thrust to slow his descent, something went wrong.<\/p>\n\n\n\n

The engine, working hard on a day that temperatures cracked 90 degrees Fahrenheit while trying to lift a plane that was heavier than most returning to base, wouldn\u2019t generate the needed thrust for a safe, ideal landing.<\/p>\n\n\n\n

The pilot got the plane down, but was shaken enough by the situation to write up an incident report that would eventually be marked as \u201chigh\u201d concern by the F-35 program office.<\/p>\n\n\n\n

\u201cMay result in unanticipated and uncontrolled sink, leading to hard landing or potential ejection\/loss of aircraft, particularly in the presence of HGI [hot gas ingestion],\u201d reads a summary of the issue, which was obtained by Defense News as part of a cache of \u201cfor official use only\u201d documents that detail major concerns with the F-35 Joint Strike Fighter.<\/p>\n\n\n\n

The issue could impact future F-35B operations in the Middle East, where temperatures are climbing<\/a> as summer approaches.<\/p>\n\n\n\n

This could also be bad news for industry, as F-35 program head Vice Adm. Mat Winter<\/a> indicated his belief that the fix, which he called the Marine Corps\u2019 \u201cNo. 1 priority\u201d for the F-35 program, should be paid for, at least in part, by the big contractors who designed the aircraft.<\/p>\n\n\n\n

Still, Winter expressed confidence that the landing issue, which has so far proven to be a one-off incident, will be addressed by a series of fixes that should be in place by April 2020.<\/p>\n\n\n\n

\u201cWe\u2019re not done yet, and the Marine Corps will tell you we\u2019re not done yet until we see the fix in the fleet, because that\u2019s where we are,\u201d Winter said. \u201cThat is the only way a STOVL aircraft lands on an L-class [amphibious] ship, so it\u2019s important.\u201d<\/p>\n\n\n\n

Technical details<\/b><\/p>\n\n\n\n

The issue seems to stem from two factors: the heat, and the fact that much of the testing for the \u201cmode four\u201d maneuver was done with planes that were lighter, as they weren\u2019t armed with heavy stores of weaponry.<\/p>\n\n\n\n

Feedback from the Marine Corps highlighted that while the average engine should not see this issue until around 750 flight hours, \u201cseveral engines are at\/near the point of concern,\u201d and that number will continue to grow with the extended use of older planes.<\/p>\n\n\n\n

Rebecca Grant, an analyst with IRIS Independent Research, said the issue seems to be a variant of the traditional \u201chigh-hot\u201d problem, where hot temperatures make the air less dense.<\/p>\n\n\n\n

\u201cAll engines are less efficient when super hot days reduce engine power and lift. Think of the helicopters and even tankers flying \u2018high-hot\u2019 mission parameters in Afghanistan or commercial jets out of Mexico City,\u201d she explained. \u201cAlthough air is dense at sea level, the heat surge slightly changed engine power.\u201d<\/p>\n\n\n\n

Winter said engineers have identified an issue in the design of the control software that the pilot uses to generate demand for thrust from the propulsion system.<\/p>\n\n\n\n

\u201cThere\u2019s no redesign of the engine [necessary]. The engine is doing what the engine is supposed to do,\u201d Winter emphasized, before acknowledging that in addition to the software fix, the program office has worked with Honeywell to change how the company calibrates the throttle valve on the engine.<\/p>\n\n\n\n

\u201cWe\u2019ve identified the software fix for the control system, the calibration fix to the throttle valve and some near-term fleet actions that could be taken for very hot days to ensure that the pilot gets the performance he or she needs on those hot days,\u201d he said.<\/p>\n\n\n\n

That software fix will be a rolling target, as the first increment of the software release is due in June, followed by another at the end of this year or early next year.<\/p>\n\n\n\n

Click here for more on the hidden troubles of the F-35.<\/b><\/a><\/p>\n\n\n\n

\u201cWe\u2019ve given them tighter tolerances to tune them more precisely, so that when it goes on the engine it\u2019s no longer not giving the command the way it\u2019s supposed to be,\u201d Winter explained. \u201cIt wasn\u2019t tuned correctly for this high-demand phase of flight. Now, we fixed that. That\u2019s fixed. The software is going in to make sure that the pilot can command that thrust and understand the heat and the loading.\u201d<\/p>\n\n\n\n

Those fixes won\u2019t be cheap, and when asked who would pay for them, Winter was blunt, saying it is his office\u2019s belief the thrust issue is a \u201cdesign deficiency\u201d that merits \u201cconsideration\u201d from industry.<\/p>\n\n\n\n

\u201cIn this case it doesn\u2019t matter that the design was done back in 2002, it\u2019s still pragmatistic, so you owe consideration because we\u2019re fixing it right now,\u201d Winter said of industry.<\/p>\n\n\n

<\/atype-video-jwplayer>
A U.S. Marine Corps pilot from the first forward-deployed F-35 unit tells Defense News what it’s like to vertically land an F-35B at the 2018 Singapore Airshow.<\/figcaption><\/figure>\n\n\n

Temporary solutions<\/b><\/p>\n\n\n\n

The real test is going to be how the fixes perform in the field, given the F-35B\u2019s 2018 deployment into the Middle East shows the jet will be used in a region known for lacking cool summer days.<\/p>\n\n\n\n

When asked if the issue could impact operations in the region, Winter acknowledged it could during \u201cvery hot days.\u201d<\/p>\n\n\n\n

\u201cI will not go on the record to say that there hasn\u2019t been [an effect on operations]. There has been operational impact \u2014 that\u2019s how we found this, and now we are implementing the fix to eliminate that operational impact, and the war fighter right now is mitigating that operational impact through the mechanisms and techniques we\u2019ve provided them,\u201d he said.<\/p>\n\n\n\n

And until the fix is fully in place, pilots operating the F-35B can do a few things to mitigate the risk of a hard landing. First, make sure to wash the blades on the engine more frequently to avoid the buildup of salt or dirt that can make the system less efficient. Second, the squadron commander will need to think about load management, making sure aircraft aren\u2019t returning too heavy with fuel and weapons.<\/p>\n\n\n\n

\u201cIt\u2019s wind over the deck. It\u2019s aircraft stores loading. It\u2019s those types of operational activities that a war fighter already takes into account,\u201d Winter explained.<\/p>\n\n\n\n

Richard Aboulafia, an aviation expert with the Teal Group, agreed weight matters, saying that high-hot issues can often \u201cbe dealt with easily, but often at the expense of weight, which can impact range and payload.\u201d<\/p>\n\n\n\n

Grant also noted that Marine pilots will be able to adjust how they land, now that the issue is a known problem, adding that in comparison to the old Harrier Jump Jets, \u201cthe F-35B actually does way better than the Harrier in controlling its heat downwash.\u201d<\/p>\n\n\n\n

Valerie Insinna in Washington contributed to this report.<\/i><\/p>\n","protected":false},"excerpt":{"rendered":"

When it’s a hot one, the F-35B might struggle to land safely. And that could be bad news for industry.<\/p>\n","protected":false},"author":7,"featured_media":29091,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_yoast_wpseo_meta-robots-noindex":"","_yoast_wpseo_meta-robots-nofollow":"","_yoast_wpseo_canonical":"","_acf":"","_yoast_wpseo_primary_category":7,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","_smg_distribution_targets":{"2":{"categories":["middle-column","home"],"primary_category":"middle-column"},"6":{"categories":["your-marine-corps","news","daily-news-roundup","newsletters"],"primary_category":"your-marine-corps"}}},"categories":[7,160,32,16,36,30,117],"tags":[],"coauthors":[3378],"class_list":["post-15432","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-air","category-daily-news-roundup","category-disaster","category-naval","category-newsletters","category-smr","category-hidden-troubles-f35"],"acf":{"subheadline":"","legacy_arc_id":"ZBMJKLDFJJF5FGWU6X5O4XLV5U","arc_canonical_url":"\/air\/2019\/06\/12\/the-marine-corps-no-1-priority-for-the-f-35-involves-a-rough-landing-in-hot-environments\/","remove_feature_photo":false,"is_sponsored":false,"subtype":"","redirect_url":"","disable_inline_ads":false,"native_logo_pretext":"Presented By:"},"yoast_head":"\nThe Marine Corps\u2019 \u2018No. 1 priority\u2019 for the F-35 involves a rough landing in hot environments - Defense News<\/title>\n<meta name=\"description\" content=\"When it's a hot one, the F-35B might struggle to land safely. And that could be bad news for industry.\" \/>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The Marine Corps\u2019 \u2018No. 1 priority\u2019 for the F-35 involves a rough landing in hot environments\" \/>\n<meta property=\"og:description\" content=\"When it's a hot one, the F-35B might struggle to land safely. And that could be bad news for industry.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/one.sightlinemg.com\/defensenews\/air\/2019\/06\/12\/the-marine-corps-no-1-priority-for-the-f-35-involves-a-rough-landing-in-hot-environments\/\" \/>\n<meta property=\"og:site_name\" content=\"Defense News\" \/>\n<meta property=\"article:published_time\" content=\"2019-06-12T09:16:07+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-08-07T21:34:53+00:00\" \/>\n<meta name=\"author\" content=\"Aaron Mehta\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Aaron Mehta\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\n\t \"@context\": \"https:\\\/\\\/schema.org\",\n\t \"@graph\": [\n\t {\n\t \"@type\": \"Article\",\n\t \"@id\": \"https:\\\/\\\/one.sightlinemg.com\\\/defensenews\\\/air\\\/2019\\\/06\\\/12\\\/the-marine-corps-no-1-priority-for-the-f-35-involves-a-rough-landing-in-hot-environments\\\/#article\",\n\t \"isPartOf\": {\n\t \"@id\": \"https:\\\/\\\/one.sightlinemg.com\\\/defensenews\\\/air\\\/2019\\\/06\\\/12\\\/the-marine-corps-no-1-priority-for-the-f-35-involves-a-rough-landing-in-hot-environments\\\/\"\n\t },\n\t \"author\": {\n\t \"name\": \"migration\",\n\t \"@id\": \"https:\\\/\\\/one.sightlinemg.com\\\/defensenews\\\/#\\\/schema\\\/person\\\/cc76c831bb37a926738c8391fca7a3b1\"\n\t },\n\t \"headline\": \"The Marine Corps\u2019 \u2018No. 1 priority\u2019 for the F-35 involves a rough landing in hot environments\",\n\t \"datePublished\": \"2019-06-12T09:16:07+00:00\",\n\t \"dateModified\": \"2026-08-07T21:34:53+00:00\",\n\t \"mainEntityOfPage\": {\n\t \"@id\": \"https:\\\/\\\/one.sightlinemg.com\\\/defensenews\\\/air\\\/2019\\\/06\\\/12\\\/the-marine-corps-no-1-priority-for-the-f-35-involves-a-rough-landing-in-hot-environments\\\/\"\n\t },\n\t \"wordCount\": 1185,\n\t \"commentCount\": 0,\n\t \"publisher\": {\n\t \"@id\": \"https:\\\/\\\/one.sightlinemg.com\\\/defensenews\\\/#organization\"\n\t },\n\t \"image\": {\n\t \"@id\": \"https:\\\/\\\/one.sightlinemg.com\\\/defensenews\\\/air\\\/2019\\\/06\\\/12\\\/the-marine-corps-no-1-priority-for-the-f-35-involves-a-rough-landing-in-hot-environments\\\/#primaryimage\"\n\t },\n\t \"thumbnailUrl\": \"https:\\\/\\\/one.sightlinemg.com\\\/wp-content\\\/uploads\\\/2026\\\/08\\\/1041643-1.jpg.jpg\",\n\t \"articleSection\": [\n\t \"Air Warfare\",\n\t \"Daily News Roundup\",\n\t \"Disaster | Advertiser Safety\",\n\t \"Naval\",\n\t \"Newsletters\",\n\t \"Special Multimedia Reports\",\n\t \"The Hidden Troubles of the F-35\"\n\t ],\n\t \"inLanguage\": \"en-US\",\n\t \"potentialAction\": [\n\t {\n\t \"@type\": \"CommentAction\",\n\t \"name\": \"Comment\",\n\t \"target\": [\n\t \"https:\\\/\\\/one.sightlinemg.com\\\/defensenews\\\/air\\\/2019\\\/06\\\/12\\\/the-marine-corps-no-1-priority-for-the-f-35-involves-a-rough-landing-in-hot-environments\\\/#respond\"\n\t ]\n\t }\n\t ]\n\t },\n\t {\n\t \"@type\": \"WebPage\",\n\t \"@id\": \"https:\\\/\\\/one.sightlinemg.com\\\/defensenews\\\/air\\\/2019\\\/06\\\/12\\\/the-marine-corps-no-1-priority-for-the-f-35-involves-a-rough-landing-in-hot-environments\\\/\",\n\t \"url\": \"https:\\\/\\\/one.sightlinemg.com\\\/defensenews\\\/air\\\/2019\\\/06\\\/12\\\/the-marine-corps-no-1-priority-for-the-f-35-involves-a-rough-landing-in-hot-environments\\\/\",\n\t \"name\": \"The Marine Corps\u2019 \u2018No. 1 priority\u2019 for the F-35 involves a rough landing in hot environments - Defense News\",\n\t \"isPartOf\": {\n\t \"@id\": \"https:\\\/\\\/one.sightlinemg.com\\\/defensenews\\\/#website\"\n\t },\n\t \"primaryImageOfPage\": {\n\t \"@id\": \"https:\\\/\\\/one.sightlinemg.com\\\/defensenews\\\/air\\\/2019\\\/06\\\/12\\\/the-marine-corps-no-1-priority-for-the-f-35-involves-a-rough-landing-in-hot-environments\\\/#primaryimage\"\n\t },\n\t \"image\": {\n\t \"@id\": \"https:\\\/\\\/one.sightlinemg.com\\\/defensenews\\\/air\\\/2019\\\/06\\\/12\\\/the-marine-corps-no-1-priority-for-the-f-35-involves-a-rough-landing-in-hot-environments\\\/#primaryimage\"\n\t },\n\t \"thumbnailUrl\": \"https:\\\/\\\/one.sightlinemg.com\\\/wp-content\\\/uploads\\\/2026\\\/08\\\/1041643-1.jpg.jpg\",\n\t \"datePublished\": \"2019-06-12T09:16:07+00:00\",\n\t \"dateModified\": \"2026-08-07T21:34:53+00:00\",\n\t \"description\": \"When it's a hot one, the F-35B might struggle to land safely. And that could be bad news for industry.\",\n\t \"breadcrumb\": {\n\t \"@id\": \"https:\\\/\\\/one.sightlinemg.com\\\/defensenews\\\/air\\\/2019\\\/06\\\/12\\\/the-marine-corps-no-1-priority-for-the-f-35-involves-a-rough-landing-in-hot-environments\\\/#breadcrumb\"\n\t },\n\t \"inLanguage\": \"en-US\",\n\t \"potentialAction\": [\n\t {\n\t \"@type\": \"ReadAction\",\n\t \"target\": [\n\t \"https:\\\/\\\/one.sightlinemg.com\\\/defensenews\\\/air\\\/2019\\\/06\\\/12\\\/the-marine-corps-no-1-priority-for-the-f-35-involves-a-rough-landing-in-hot-environments\\\/\"\n\t ]\n\t }\n\t ]\n\t },\n\t {\n\t \"@type\": \"ImageObject\",\n\t \"inLanguage\": \"en-US\",\n\t \"@id\": \"https:\\\/\\\/one.sightlinemg.com\\\/defensenews\\\/air\\\/2019\\\/06\\\/12\\\/the-marine-corps-no-1-priority-for-the-f-35-involves-a-rough-landing-in-hot-environments\\\/#primaryimage\",\n\t \"url\": \"https:\\\/\\\/one.sightlinemg.com\\\/wp-content\\\/uploads\\\/2026\\\/08\\\/1041643-1.jpg.jpg\",\n\t \"contentUrl\": \"https:\\\/\\\/one.sightlinemg.com\\\/wp-content\\\/uploads\\\/2026\\\/08\\\/1041643-1.jpg.jpg\"\n\t },\n\t {\n\t \"@type\": \"BreadcrumbList\",\n\t \"@id\": \"https:\\\/\\\/one.sightlinemg.com\\\/defensenews\\\/air\\\/2019\\\/06\\\/12\\\/the-marine-corps-no-1-priority-for-the-f-35-involves-a-rough-landing-in-hot-environments\\\/#breadcrumb\",\n\t \"itemListElement\": [\n\t {\n\t \"@type\": \"ListItem\",\n\t \"position\": 1,\n\t \"name\": \"Home\",\n\t \"item\": \"https:\\\/\\\/one.sightlinemg.com\\\/defensenews\\\/\",\n\t \"ad_zone\": \"home\"\n\t },\n\t {\n\t \"@type\": \"ListItem\",\n\t \"position\": 2,\n\t \"name\": \"Air Warfare\",\n\t \"item\": \"https:\\\/\\\/one.sightlinemg.com\\\/defensenews\\\/air\\\/\",\n\t \"ad_zone\": \"air\"\n\t },\n\t {\n\t \"@type\": \"ListItem\",\n\t \"position\": 3,\n\t \"name\": \"The Marine Corps\u2019 \u2018No. 1 priority\u2019 for the F-35 involves a rough landing in hot environments\"\n\t }\n\t ]\n\t },\n\t {\n\t \"@type\": \"WebSite\",\n\t \"@id\": \"https:\\\/\\\/one.sightlinemg.com\\\/defensenews\\\/#website\",\n\t \"url\": \"https:\\\/\\\/one.sightlinemg.com\\\/defensenews\\\/\",\n\t \"name\": \"Defense News\",\n\t \"description\": \"Covering the politics, business and technology of defense | Defense News\",\n\t \"publisher\": {\n\t \"@id\": \"https:\\\/\\\/one.sightlinemg.com\\\/defensenews\\\/#organization\"\n\t },\n\t \"potentialAction\": [\n\t {\n\t \"@type\": \"SearchAction\",\n\t \"target\": {\n\t \"@type\": \"EntryPoint\",\n\t \"urlTemplate\": \"https:\\\/\\\/one.sightlinemg.com\\\/defensenews\\\/?s={search_term_string}\"\n\t },\n\t \"query-input\": {\n\t \"@type\": \"PropertyValueSpecification\",\n\t \"valueRequired\": true,\n\t \"valueName\": \"search_term_string\"\n\t }\n\t }\n\t ],\n\t \"inLanguage\": \"en-US\"\n\t },\n\t {\n\t \"@type\": \"Organization\",\n\t \"@id\": \"https:\\\/\\\/one.sightlinemg.com\\\/defensenews\\\/#organization\",\n\t \"name\": \"Defense News\",\n\t \"url\": \"https:\\\/\\\/one.sightlinemg.com\\\/defensenews\\\/\",\n\t \"logo\": {\n\t \"@type\": \"ImageObject\",\n\t \"inLanguage\": \"en-US\",\n\t \"@id\": \"https:\\\/\\\/one.sightlinemg.com\\\/defensenews\\\/#\\\/schema\\\/logo\\\/image\\\/\",\n\t \"url\": \"https:\\\/\\\/one.sightlinemg.com\\\/wp-content\\\/uploads\\\/2026\\\/06\\\/defensenews-logo-white.png\",\n\t \"contentUrl\": \"https:\\\/\\\/one.sightlinemg.com\\\/wp-content\\\/uploads\\\/2026\\\/06\\\/defensenews-logo-white.png\",\n\t \"caption\": \"Defense News\"\n\t },\n\t \"image\": {\n\t \"@id\": \"https:\\\/\\\/one.sightlinemg.com\\\/defensenews\\\/#\\\/schema\\\/logo\\\/image\\\/\"\n\t }\n\t },\n\t {\n\t \"@type\": \"Person\",\n\t \"@id\": \"https:\\\/\\\/one.sightlinemg.com\\\/defensenews\\\/#\\\/schema\\\/person\\\/cc76c831bb37a926738c8391fca7a3b1\",\n\t \"name\": \"migration\",\n\t \"image\": {\n\t \"@type\": \"ImageObject\",\n\t \"inLanguage\": \"en-US\",\n\t \"@id\": \"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/9e8d47be443ce94ce7fc357677b5f9c70235bb1f59e7267a102a74af58c04f59?s=96&d=mm&r=gcf4cb6ee0ec29e49e7a963234e4340ec\",\n\t \"url\": \"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/9e8d47be443ce94ce7fc357677b5f9c70235bb1f59e7267a102a74af58c04f59?s=96&d=mm&r=g\",\n\t \"contentUrl\": \"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/9e8d47be443ce94ce7fc357677b5f9c70235bb1f59e7267a102a74af58c04f59?s=96&d=mm&r=g\",\n\t \"caption\": \"migration\"\n\t },\n\t \"url\": \"https:\\\/\\\/one.sightlinemg.com\\\/defensenews\\\/author\\\/migration\\\/\"\n\t }\n\t ]\n\t}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"The Marine Corps\u2019 \u2018No. 1 priority\u2019 for the F-35 involves a rough landing in hot environments - Defense News","description":"When it's a hot one, the F-35B might struggle to land safely. And that could be bad news for industry.","robots":{"index":"noindex","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"og_locale":"en_US","og_type":"article","og_title":"The Marine Corps\u2019 \u2018No. 1 priority\u2019 for the F-35 involves a rough landing in hot environments","og_description":"When it's a hot one, the F-35B might struggle to land safely. And that could be bad news for industry.","og_url":"https:\/\/one.sightlinemg.com\/defensenews\/air\/2019\/06\/12\/the-marine-corps-no-1-priority-for-the-f-35-involves-a-rough-landing-in-hot-environments\/","og_site_name":"Defense News","article_published_time":"2019-06-12T09:16:07+00:00","article_modified_time":"2026-08-07T21:34:53+00:00","author":"Aaron Mehta","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Aaron Mehta","Est. reading time":"6 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/one.sightlinemg.com\/defensenews\/air\/2019\/06\/12\/the-marine-corps-no-1-priority-for-the-f-35-involves-a-rough-landing-in-hot-environments\/#article","isPartOf":{"@id":"https:\/\/one.sightlinemg.com\/defensenews\/air\/2019\/06\/12\/the-marine-corps-no-1-priority-for-the-f-35-involves-a-rough-landing-in-hot-environments\/"},"author":{"name":"migration","@id":"https:\/\/one.sightlinemg.com\/defensenews\/#\/schema\/person\/cc76c831bb37a926738c8391fca7a3b1"},"headline":"The Marine Corps\u2019 \u2018No. 1 priority\u2019 for the F-35 involves a rough landing in hot environments","datePublished":"2019-06-12T09:16:07+00:00","dateModified":"2026-08-07T21:34:53+00:00","mainEntityOfPage":{"@id":"https:\/\/one.sightlinemg.com\/defensenews\/air\/2019\/06\/12\/the-marine-corps-no-1-priority-for-the-f-35-involves-a-rough-landing-in-hot-environments\/"},"wordCount":1185,"commentCount":0,"publisher":{"@id":"https:\/\/one.sightlinemg.com\/defensenews\/#organization"},"image":{"@id":"https:\/\/one.sightlinemg.com\/defensenews\/air\/2019\/06\/12\/the-marine-corps-no-1-priority-for-the-f-35-involves-a-rough-landing-in-hot-environments\/#primaryimage"},"thumbnailUrl":"https:\/\/one.sightlinemg.com\/wp-content\/uploads\/2026\/08\/1041643-1.jpg.jpg","articleSection":["Air Warfare","Daily News Roundup","Disaster | Advertiser Safety","Naval","Newsletters","Special Multimedia Reports","The Hidden Troubles of the F-35"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/one.sightlinemg.com\/defensenews\/air\/2019\/06\/12\/the-marine-corps-no-1-priority-for-the-f-35-involves-a-rough-landing-in-hot-environments\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/one.sightlinemg.com\/defensenews\/air\/2019\/06\/12\/the-marine-corps-no-1-priority-for-the-f-35-involves-a-rough-landing-in-hot-environments\/","url":"https:\/\/one.sightlinemg.com\/defensenews\/air\/2019\/06\/12\/the-marine-corps-no-1-priority-for-the-f-35-involves-a-rough-landing-in-hot-environments\/","name":"The Marine Corps\u2019 \u2018No. 1 priority\u2019 for the F-35 involves a rough landing in hot environments - Defense News","isPartOf":{"@id":"https:\/\/one.sightlinemg.com\/defensenews\/#website"},"primaryImageOfPage":{"@id":"https:\/\/one.sightlinemg.com\/defensenews\/air\/2019\/06\/12\/the-marine-corps-no-1-priority-for-the-f-35-involves-a-rough-landing-in-hot-environments\/#primaryimage"},"image":{"@id":"https:\/\/one.sightlinemg.com\/defensenews\/air\/2019\/06\/12\/the-marine-corps-no-1-priority-for-the-f-35-involves-a-rough-landing-in-hot-environments\/#primaryimage"},"thumbnailUrl":"https:\/\/one.sightlinemg.com\/wp-content\/uploads\/2026\/08\/1041643-1.jpg.jpg","datePublished":"2019-06-12T09:16:07+00:00","dateModified":"2026-08-07T21:34:53+00:00","description":"When it's a hot one, the F-35B might struggle to land safely. And that could be bad news for industry.","breadcrumb":{"@id":"https:\/\/one.sightlinemg.com\/defensenews\/air\/2019\/06\/12\/the-marine-corps-no-1-priority-for-the-f-35-involves-a-rough-landing-in-hot-environments\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/one.sightlinemg.com\/defensenews\/air\/2019\/06\/12\/the-marine-corps-no-1-priority-for-the-f-35-involves-a-rough-landing-in-hot-environments\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/one.sightlinemg.com\/defensenews\/air\/2019\/06\/12\/the-marine-corps-no-1-priority-for-the-f-35-involves-a-rough-landing-in-hot-environments\/#primaryimage","url":"https:\/\/one.sightlinemg.com\/wp-content\/uploads\/2026\/08\/1041643-1.jpg.jpg","contentUrl":"https:\/\/one.sightlinemg.com\/wp-content\/uploads\/2026\/08\/1041643-1.jpg.jpg"},{"@type":"BreadcrumbList","@id":"https:\/\/one.sightlinemg.com\/defensenews\/air\/2019\/06\/12\/the-marine-corps-no-1-priority-for-the-f-35-involves-a-rough-landing-in-hot-environments\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/one.sightlinemg.com\/defensenews\/","ad_zone":"home"},{"@type":"ListItem","position":2,"name":"Air Warfare","item":"https:\/\/one.sightlinemg.com\/defensenews\/air\/","ad_zone":"air"},{"@type":"ListItem","position":3,"name":"The Marine Corps\u2019 \u2018No. 1 priority\u2019 for the F-35 involves a rough landing in hot environments"}]},{"@type":"WebSite","@id":"https:\/\/one.sightlinemg.com\/defensenews\/#website","url":"https:\/\/one.sightlinemg.com\/defensenews\/","name":"Defense News","description":"Covering the politics, business and technology of defense | Defense News","publisher":{"@id":"https:\/\/one.sightlinemg.com\/defensenews\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/one.sightlinemg.com\/defensenews\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/one.sightlinemg.com\/defensenews\/#organization","name":"Defense News","url":"https:\/\/one.sightlinemg.com\/defensenews\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/one.sightlinemg.com\/defensenews\/#\/schema\/logo\/image\/","url":"https:\/\/one.sightlinemg.com\/wp-content\/uploads\/2026\/06\/defensenews-logo-white.png","contentUrl":"https:\/\/one.sightlinemg.com\/wp-content\/uploads\/2026\/06\/defensenews-logo-white.png","caption":"Defense News"},"image":{"@id":"https:\/\/one.sightlinemg.com\/defensenews\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/one.sightlinemg.com\/defensenews\/#\/schema\/person\/cc76c831bb37a926738c8391fca7a3b1","name":"migration","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/9e8d47be443ce94ce7fc357677b5f9c70235bb1f59e7267a102a74af58c04f59?s=96&d=mm&r=gcf4cb6ee0ec29e49e7a963234e4340ec","url":"https:\/\/secure.gravatar.com\/avatar\/9e8d47be443ce94ce7fc357677b5f9c70235bb1f59e7267a102a74af58c04f59?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/9e8d47be443ce94ce7fc357677b5f9c70235bb1f59e7267a102a74af58c04f59?s=96&d=mm&r=g","caption":"migration"},"url":"https:\/\/one.sightlinemg.com\/defensenews\/author\/migration\/"}]}},"jetpack_sharing_enabled":true,"distributor_meta":false,"distributor_terms":false,"distributor_media":false,"distributor_original_site_name":"Defense News","distributor_original_site_url":"https:\/\/one.sightlinemg.com\/defensenews","push-errors":false,"jetpack_featured_media_url":"https:\/\/one.sightlinemg.com\/wp-content\/uploads\/2026\/08\/1041643-1.jpg.jpg","_links":{"self":[{"href":"https:\/\/one.sightlinemg.com\/defensenews\/wp-json\/wp\/v2\/posts\/15432","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/one.sightlinemg.com\/defensenews\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/one.sightlinemg.com\/defensenews\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/one.sightlinemg.com\/defensenews\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/one.sightlinemg.com\/defensenews\/wp-json\/wp\/v2\/comments?post=15432"}],"version-history":[{"count":1,"href":"https:\/\/one.sightlinemg.com\/defensenews\/wp-json\/wp\/v2\/posts\/15432\/revisions"}],"predecessor-version":[{"id":15435,"href":"https:\/\/one.sightlinemg.com\/defensenews\/wp-json\/wp\/v2\/posts\/15432\/revisions\/15435"}],"wp:attachment":[{"href":"https:\/\/one.sightlinemg.com\/defensenews\/wp-json\/wp\/v2\/media?parent=15432"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/one.sightlinemg.com\/defensenews\/wp-json\/wp\/v2\/categories?post=15432"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/one.sightlinemg.com\/defensenews\/wp-json\/wp\/v2\/tags?post=15432"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/one.sightlinemg.com\/defensenews\/wp-json\/wp\/v2\/coauthors?post=15432"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}