Availability and Use of Rotary-Wing Aircraft in the Department of Defense

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block-system-main-block"> <article> <div> <div class="top-section" style="position: relative;"> <h1 class="title" id="page-title"> <span>Availability and Use of Rotary-Wing Aircraft in the Department of Defense</span> </h1> <div class="meta"> <div class="field field--name-field-display-date field--type-datetime field--label-hidden field__item"><time datetime="2024-11-18T12:00:00Z">November 18, 2024</time> </div> <div class="content-type">Report</div> </div> <div class="field field--name-field-homepage-graphic field--type-entity-reference field--label-hidden field__item"><div> <div class="field field--name-field-media-image field--type-image field--label-hidden field__item"> <picture> <source srcset="/sites/default/files/styles/918/public/2024-11/60663-home-rotary-wing.jpg?itok=mqdG-iB8 918w, /sites/default/files/2024-11/60663-home-rotary-wing.jpg 1650w" media="@media screen and (min-width: 61.25em) and (-webkit-min-device-pixel-ratio: 1.25), (min-width: 61.25em) and (min-resolution: 120dpi)" type="image/jpeg" sizes="918px" width="1650" height="1100"/> <source srcset="/sites/default/files/2024-11/60663-home-rotary-wing.jpg 1x" media="@media screen and (min-width: 48em) and (min-width: 61.25em)" type="image/jpeg" width="1650" height="1100"/> <source srcset="/sites/default/files/2024-11/60663-home-rotary-wing.jpg 1x" media="@media screen and (min-width: 61.25em)" type="image/jpeg" width="1650" height="1100"/> <source srcset="/sites/default/files/styles/240/public/2024-11/60663-home-rotary-wing.jpg?itok=rOJqGqjk 240w, /sites/default/files/styles/480/public/2024-11/60663-home-rotary-wing.jpg?itok=FaVYE5NM 480w, /sites/default/files/styles/624/public/2024-11/60663-home-rotary-wing.jpg?itok=v11R3dzJ 624w, /sites/default/files/styles/800/public/2024-11/60663-home-rotary-wing.jpg?itok=HosECNcC 800w, /sites/default/files/styles/1078/public/2024-11/60663-home-rotary-wing.jpg?itok=EJceSR-q 1078w, /sites/default/files/2024-11/60663-home-rotary-wing.jpg 1650w" media="@media screen and (min-width: 28em)" type="image/jpeg" sizes="49vw" width="1650" height="1100"/> <source srcset="/sites/default/files/styles/240/public/2024-11/60663-home-rotary-wing.jpg?itok=rOJqGqjk 240w, /sites/default/files/styles/480/public/2024-11/60663-home-rotary-wing.jpg?itok=FaVYE5NM 480w, /sites/default/files/styles/624/public/2024-11/60663-home-rotary-wing.jpg?itok=v11R3dzJ 624w, /sites/default/files/styles/800/public/2024-11/60663-home-rotary-wing.jpg?itok=HosECNcC 800w, /sites/default/files/styles/1500/public/2024-11/60663-home-rotary-wing.jpg?itok=lpc1dPYY 1500w, /sites/default/files/2024-11/60663-home-rotary-wing.jpg 1650w" type="image/jpeg" sizes="95vw" width="1650" height="1100"/> <img loading="eager" src="/sites/default/files/styles/480/public/2024-11/60663-home-rotary-wing.jpg?itok=FaVYE5NM" width="480" height="320" alt="" /> </picture> </div> </div> </div> <div class="summary"><div class="view view-summary view-id-summary view-display-id-meta_summary js-view-dom-id-8f8c3f6440aa94ead594cd28205ddc42f909b9979c48198f6b08a09734ccc149"> <div class="view-content"> <div class="views-row"><p>Of the rotary-wing aircraft operated by the Army, the Department of the Navy (DoN), and the Air Force, the Army’s are the most numerous and have had the greatest availability rates. But DoN’s aircraft have flown the most hours per aircraft.</p></div> </div> </div> </div> <section class="meta--data"> <div class="left"> <div id="toc"></div> </div> <div class="right" style=""> <div class="documents" style=""> <div class="view view-html-report-link view-id-html_report_link view-display-id-link js-view-dom-id-3dea5fefca793adf24c150bd43fb91eac13e5ac9a3b1feee051c6617c6cdc607"> <div class="view-content"> <div class="views-row"><div class="views-field views-field-title-1"><span class="field-content"><a href="/publication/60982">View Document</a></span></div></div> </div> </div> <div class="view view-view-document view-id-view_document view-display-id-block_1 js-view-dom-id-66672d8a2fbfd4e29eb18c36213e43c6f19a8e158352b2ddfed0fb471c5a8f1e"> <div class="view-content"> <div class="views-row"> <a href="/system/files/2024-11/60663-dod-rotary-wing.pdf">View Document</a><div class="document-size">3.09 MB</div></div> </div> </div> </div> </div> </section> </div> <div class="main-section"> <section class="summary"> <header role="button" class="head-section" aria-expanded="false" aria-controls="content-panel"><h2>Summary</h2></header> <div class="content" id="content-panel" aria-hidden="true"> <article> <div class="clearfix text-formatted field field--name-body field--type-text-with-summary field--label-hidden field__item"><p>In this report, the Congressional Budget Office analyzes patterns in the availability and use of rotary-wing aircraft by three military departments within the Department of Defense (DoD): the Army, the Department of the Navy (DoN, which includes the Marine Corps), and the Air Force. A fleet’s availability rate is the percentage of aircraft that are possessed by operational squadrons (and not receiving maintenance in a depot) and available to be flown.</p><ul><li><strong>Fleet Sizes.</strong> As of September 2023, DoD had about 5,400 rotary-wing aircraft. The Army had about 3,700; DoN had about 1,400; and the Air Force had about 300. Almost half of those rotary-wing aircraft were versions of H-60 transport helicopters.</li><li><strong>Availability and Use Among the Services.</strong> In recent years, availability rates of the Army’s rotary-wing aircraft have been greater than availability rates of the Air Force’s and DoN’s aircraft. But DoN has flown its rotary-wing aircraft more hours per aircraft than the Air Force or Army has.</li><li><strong>Age, Availability, and Use of Aircraft.</strong> DoN replaced much of its rotary-wing fleet in the first half of the 2010s. The average age of the Army’s rotary-wing aircraft (around 16 years) has remained relatively constant since 2000. The Air Force’s rotary-wing aircraft appear to be older, on average, than those operated by the other services. But that is because when the Air Force rebuilds its helicopters, it does not renumber them like the other services do. <br><br>DoN’s H-60s show a marked decline in availability rates in the first five years of operation—more so than the other services’ H-60s. Similarly, although the availability and use of aircraft typically diminish with age, the decrease in availability and use of DoN’s V-22 tiltrotor aircraft is nonetheless noteworthy.</li></ul><div data-entity-type="node" data-entity-uuid="258f0013-2ce1-4d10-bb37-97b64271e0f9" data-embed-button="interactive" data-entity-embed-display="view_mode:node.teaser" data-langcode="en" data-entity-embed-display-settings="[]" class="embedded-entity"><article id="node-60983" class> <div class="posted"> </div> <div class="field field--name-field-interactive field--type-entity-reference-revisions field--label-hidden field__item"> <div class="paragraph paragraph--type--interactive-graphics paragraph--view-mode--preview"> <div class="interactive-label">Interactive</div> <div class="field field--name-field-interactive-graphics-code field--type-text-long field--label-hidden field__item"> <div id="highcharts-d97c78fd-ce25-4447-ba68-9e026b6d048d"></div><script> (function(){ var files = 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fontFamily = "'source_sans_prosemibold','Helvetica','Roboto','Arial',sans-serif"; Highcharts.merge(true, options, { chart: { style: { fontFamily: fontFamily, }, }, exporting: { buttons: { contextButton: { menuItems: ["printChart","separator","downloadPNG","downloadJPEG","downloadPDF","downloadSVG"], }, }, }, title: { style: { fontFamily: fontFamily, }, }, subtitle: { style: { fontFamily: fontFamily, }, }, }); new Highcharts.Chart("highcharts-d97c78fd-ce25-4447-ba68-9e026b6d048d", options);}}})(); </script></div> </div> </div> </article></div> </div> </article> </div> </section> <section class="documents"> <header class="head-section"> <a name="data"></a> <h2 id="">Data and Supplemental Information</h2> </header> <div class="content"> <div class="view view-supplemental-attachments view-id-supplemental_attachments view-display-id-block_3 js-view-dom-id-804d681765995fdb4ac68dbd7df750140d19dacd41ee0cec60e9a7e9bacafac0"> <div class="view-content"> <div class="item-list"> <ul> <li><div class="views-field views-field-field-display-name"><div class="field-content"><a href="/system/files/2024-11/60663-data.xlsx">Data Underlying Figures</a></div></div><div class="views-field views-field-field-uploaded-file-note"><span class="field-content uploaded-file-note"></span></div></li> </ul> </div> </div> </div> </div> </section> <section class="related-publications"> <header class="head-section" role="button"><a name="related_pub"></a><h2 id="">Related Publications</h2></header> <div class="content"><div class="view view-related view-id-related view-display-id-publications js-view-dom-id-36095c7f1398560fe1fd20efb2723f64e7b81ef99dfc7de9bf4a2e4f2ea3066d"> <div class="view-content"> <div class="item-list"> <ul> <li><div class="views-field views-field-title"><span class="field-content"><a href="/publication/60313" hreflang="en">Availability and Use of Aircraft in the Army</a></span></div><div class="views-field views-field-field-display-date"><div class="field-content"><time datetime="2024-09-05T12:00:00Z">September 5, 2024</time> </div></div></li> <li><div class="views-field views-field-title"><span class="field-content"><a href="/publication/59098" hreflang="en">DECKPLATE and AMSRR: Comparing Two Ways to Measure the Availability of F/A-18E/F Super Hornet Aircraft </a></span></div><div class="views-field views-field-field-display-date"><div class="field-content"><time datetime="2023-07-17T12:00:00Z">July 17, 2023</time> </div></div></li> <li><div class="views-field views-field-title"><span class="field-content"><a href="/publication/58687" hreflang="en">Availability and Use of the F/A-18E/F Super Hornet Fighter Aircraft</a></span></div><div class="views-field views-field-field-display-date"><div class="field-content"><time datetime="2023-02-09T12:00:00Z">February 9, 2023</time> </div></div></li> <li><div class="views-field views-field-title"><span class="field-content"><a href="/publication/57433" hreflang="en">Availability and Use of Aircraft in the Air Force and Navy</a></span></div><div class="views-field views-field-field-display-date"><div class="field-content"><time datetime="2022-01-05T12:00:00Z">January 5, 2022</time> </div></div></li> <li><div class="views-field views-field-title"><span class="field-content"><a href="/publication/55950" hreflang="en">The Cost of Replacing the Department of Defense’s Current Aviation Fleet</a></span></div><div class="views-field views-field-field-display-date"><div class="field-content"><time datetime="2020-01-15T12:00:00Z">January 15, 2020</time> </div></div></li> <li><div class="views-field views-field-title"><span class="field-content"><a href="/publication/55949" hreflang="en">The Cost of Replacing Today’s Naval Aviation Fleet</a></span></div><div class="views-field views-field-field-display-date"><div class="field-content"><time datetime="2020-01-06T12:00:00Z">January 6, 2020</time> </div></div></li> <li><div class="views-field views-field-title"><span class="field-content"><a href="/publication/55180" hreflang="en">The Cost of Replacing Today’s Army Aviation Fleet</a></span></div><div class="views-field views-field-field-display-date"><div class="field-content"><time datetime="2019-05-10T12:00:00Z">May 10, 2019</time> </div></div></li> <li><div class="views-field views-field-title"><span class="field-content"><a href="/publication/54657" hreflang="en">The Cost of Replacing Today’s Air Force Fleet</a></span></div><div class="views-field views-field-field-display-date"><div class="field-content"><time datetime="2018-12-11T12:00:00Z">December 11, 2018</time> </div></div></li> </ul> </div> </div> </div> </div> </section> </div> </div> </article> </section> </section> </main> <footer id="site-footer" role="contentinfo"> <div class="footer-top-wrapper"> <section class="footer-top"> <section id="block-cbo-stayconnected" class="block block-block-content block-block-content121d8e86-2c04-4907-8bda-853870ff58b5"> <h2 >Stay Connected</h2> <div class="clearfix 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Availability and Use of Rotary-Wing Aircraft in the Department of Defense | Congressional Budget Office