HAL HTT-40

{{Short description|Indian military turboprop trainer}} {{pp-extended|small=yes}} {{Use dmy dates|date=June 2022}} {{Use Indian English|date=June 2022}} {{Infobox aircraft | name = HTT-40 | logo = | logo_size = | image = File:HAL HTT-40.jpg | alt = | caption = | long_caption = | other_names = | aircraft_type = Basic training aircraft | aim = | outcome = | related = | national_origin = India | manufacturer = Hindustan Aeronautics Limited | design_group = Aircraft Research and Design Centre<ref>{{cite news |last1=Thakur |first1=Aksheev |title=HAL's HTT-40 gets airworthiness clearance certificate from CEMILAC |url=https://indianexpress.com/article/cities/bangalore/hals-htt-40-clearance-airworthiness-certificate-cemilac-7960888/ |access-date=20 October 2022 |publisher=The Indian Express |date=9 June 2022}}</ref> | designer = | builder = | issuer = | status = In production | owners = | primary_user = Indian Air Force | more_users = | service = | major_applications = | proposals = | prototypes = | number_built = 2 (excluding 2 prototypes) | construction_number = | civil_registration = | military_serial = | radio_code = | requirement = | aircraft_carried = | flights = | total_hours = | total_distance = | construction_date = | introduction = 2026 (planned) <ref>{{cite news |title=Six months on, HAL's trainer aircraft for IAF awaits full safety certification |url=https://indianexpress.com/article/india/six-months-on-hals-trainer-aircraft-for-iaf-awaits-full-safety-certification-8950748/ |agency=The Indian EXPRESS |publisher=Amrita Nayak Dutta ( 22 September 2023)}}</ref> | retired = | first_flight = 31 May 2016<ref name="HTT-40’s first flight successful">{{cite news|title=HAL-built HTT-40's first flight successful|url=http://www.oneindia.com/india/hal-built-htt-40-first-flight-successful-2114270.html|access-date=31 May 2016|publisher=One India|date=31 May 2016}}</ref> | initiated = | in_service = | last_flight = | expected = | developed_from = HPT-32 Deepak | variants = | developed_into = | preservation = | fate = | predecessors = | successors = | concluded = }}

The '''HAL HTT-40''' (Hindustan Turbo Trainer-40) is an Indian training aircraft designed and built by Hindustan Aeronautics Limited (HAL). It will replace the Indian Air Force's retired HPT-32 Deepak as a basic trainer.<ref>{{Cite web|url=http://indiadefenceonline.com/1146/hal-offers-new-basic-trainer-to-air-force|archiveurl=https://web.archive.org/web/20101217003650/http://indiadefenceonline.com/1146/hal-offers-new-basic-trainer-to-air-force|url-status=usurped|title=HAL Offers New Basic Trainer to Air Force|archivedate=December 17, 2010}}</ref><ref name="HALoutline">{{cite web|url = http://www.hal-india.com/futureproducts/products.asp|title = Hal htt-40|access-date = 8 May 2012|author = |publisher=Hindustan Aeronautics Ltd|date = n.d.|archive-url = https://web.archive.org/web/20161222115526/http://www.hal-india.com/futureproducts/products.asp|archive-date = 22 December 2016|url-status = dead|df = dmy-all}}</ref>

==Design and development== The HTT-40 is a tandem seat trainer aircraft powered by a {{convert|1100|hp|kW|0|abbr=on}} turboprop engine. In early 2012, the company forecast building 106 examples.<ref name="HALoutline" />

By the middle of 2012 the aircraft's future was in doubt as the Indian Air Force ordered 75 Pilatus PC-7 Mk IIs to fill the role envisioned for the HTT-40. In September 2012, the Air Force indicated that it had formally rejected the HTT-40 for service based on its cost per aircraft being double that of the PC-7 Mk II, a proven aircraft, already in service worldwide. An MoD official noted, "We would be willing to pay higher rates to build indigenous capability in strategic defence equipment. But can HAL argue that the capability to build basic trainers is strategically vital[?]"<ref name="Shukla19Dec12">{{cite news|url = http://business-standard.com/india/news/mod-rejects-hals-proposal-to-build-basic-trainer/496078/|title = MoD rejects HAL's proposal to build basic trainer|access-date = 19 December 2012|last = Shukla|first = Ajai|date = 19 December 2012| work = Business Standard}}</ref><ref>{{cite web |url=http://millenniumpost.in/NewsContent.aspx?NID=4459 |title=Basic trainer for IAF | Millennium Post |publisher=Millenniumpost.in |date=2012-06-22 |access-date=2012-11-28 |archive-url=https://web.archive.org/web/20121104050658/http://millenniumpost.in/NewsContent.aspx?NID=4459 |archive-date=2012-11-04 |url-status=dead }}</ref><ref>{{cite web |author= |url=http://www.spsaviation.net/exclusive/?id=70&h=HAL-scouts-engine-for-HTT-40-basic-trainer |title=HAL scouts engine for HTT 40 basic trainer - SP's Aviation |publisher=Spsaviation.net |date=2012-06-18 |access-date=2012-11-28 |url-status=dead |archive-url=https://web.archive.org/web/20120626162750/http://www.spsaviation.net/exclusive/?id=70&h=HAL-scouts-engine-for-HTT-40-basic-trainer |archive-date=2012-06-26 }}</ref>

At that time HAL did not confirm the IAF announcement that it will not buy the HTT-40, nor did the company indicate whether the aircraft's development will be continued. A company spokesman said, "We treat all MOD issues/proposals as confidential... All our projects are conceived with national interest in mind though, at times, some of those take time to fructify".<ref name="Shukla19Dec12" />

The project formally began in 2013 with an internal funding of {{INRConvert|350|c|lk=on|year=2013}} from HAL. It took five years for the prototypes to enter spin testing phase.<ref name=":0">{{Cite web |date=2019-10-02 |title=Success! HAL's HTT 40 Trainer aircraft completes six-turn spin test, now awaits FOC |url=https://www.financialexpress.com/business/defence/success-hals-htt-40-trainer-aircraft-completes-six-turn-spin-test-now-awaits-foc/1724459/ |access-date=2025-01-09 |website=Financialexpress |language=en}}</ref>

Once the HTT-40 started flying, the Indian Air Force commander publicly stated that IAF will buy the HTT-40 in large numbers.<ref>{{Cite news|url=http://indianexpress.com/article/india/india-news-india/will-induct-indigenous-htt-40-planes-in-large-numbers-iaf-chief-3007990/|title=Will induct indigenous HTT 40 planes in large numbers: IAF chief|date=2016-09-01|work=The Indian Express|access-date=2018-01-09|language=en-US}}</ref> thumb|right|HAL HTT-40 at AeroIndia 2017

On 28 February 2015, it was reported that the MoD had selected 68 HAL HTT-40 trainers and 38 Pilatus trainers to replace its current trainer fleet, stating that this move was "commercially viable".<ref>{{cite web|url=http://indianexpress.com/article/india/india-others/parrikar-68-basic-trainer-aircraft-to-come-from-hal-38-from-pilatus/|title=Parrikar: 68 basic trainer aircraft to come from HAL, 38 from Pilatus|date=1 March 2015|work=The Indian Express|access-date=1 March 2015}}</ref>

On 21 June 2015, HAL chose the Honeywell Garrett TPE331-12B turboprop to power the trainer.<ref>{{Cite web |last1=Pocock |first1=Chris |last2=Mathews |first2=Neelam |date=19 June 2015 |title=HAL Chooses TPE331 for New Indian Basic Trainer |url=https://www.ainonline.com/aviation-news/defense/2015-06-19/hal-chooses-tpe331-new-indian-basic-trainer |access-date=2022-07-31 |website=Aviation International News |language=en}}</ref> The deal was signed on 27 July 2022, for 88 engines, kits, maintenance and support worth more than $100 million. Honeywell will work with HAL to extend support for exports.<ref>{{Cite web |last=Kumar |first=Chethan |date=27 July 2022 |title=HAL, Honeywell ink $100 million pack for HTT engine |url=https://timesofindia.indiatimes.com/india/hal-honeywell-ink-100-million-pack-for-htt-engine/articleshow/93163385.cms |access-date=2022-07-31 |website=The Times of India |language=en}}</ref>

HAL rolled out the first prototype on 2 February 2016<ref>{{cite web|url=http://www.newindianexpress.com/cities/bengaluru/Boost-to-Make-in-India-HAL-Rolls-out-HTT-40-Prototype/2016/02/02/article3257448.ece|archive-url=https://web.archive.org/web/20160203091436/http://www.newindianexpress.com/cities/bengaluru/Boost-to-Make-in-India-HAL-Rolls-out-HTT-40-Prototype/2016/02/02/article3257448.ece|url-status=dead|archive-date=3 February 2016|title=Boost to Make in India: HAL Rolls-out HTT-40 Prototype|work=The New Indian Express|access-date=2 February 2016}}</ref> and it first flew on 31 May 2016.<ref name="HTT-40’s first flight successful"/>

The HTT-40 made its first public introduction flight on 17 June 2016, with Defence Minister Manohar Parrikar in attendance at the HAL airport in Bangalore.<ref>{{cite web|url=http://timesofindia.indiatimes.com/india/Indigenous-HTT-40-trainer-aircraft-makes-inaugural-flight/articleshow/52794848.cms|title=Indigenous HTT-40 trainer aircraft makes inaugural flight - Times of India|work=indiatimes.com|date=17 June 2016 |access-date=17 June 2016}}</ref> On 19 May 2017, the second prototype had its first flight.<ref>{{Cite web|url=https://timesofindia.indiatimes.com/city/bengaluru/htt-40-2nd-prototype-completes-maiden-flight/articleshow/58758866.cms|title=HTT-40 2nd prototype completes maiden flight | Bengaluru News - Times of India|website=The Times of India|date=20 May 2017 }}</ref>

In July 2019 it was anticipated that initial operational clearance would be reached by end of 2019 and that, after placement of an order, the first aircraft would be delivered to the IAF within a year.<ref>{{Cite web|url=https://economictimes.indiatimes.com/news/defence/no-need-to-import-trainer-aircraft-htt-40-to-be-ready-by-december-hal/articleshow/70423760.cms|title=No need to import trainer aircraft, HTT 40 to be ready by December: HAL|first=Manu|last=Pubby|work=The Economic Times |date=July 29, 2019}}</ref> An HTT-40 prototype demonstrated critical six-turn spin test capability in September and sought final operational clearance. The aircraft also cleared Air Staff Qualitative Requirements (ASQRs). HTT-40 procurement falls under the category of "Indian Designed, Developed and Manufactured” (IDDM), as per Defence Procurement Policy (2016).<ref name=":0" /><ref>{{Cite web |title=HTT-40 Spin Demonstration {{!}} Defence Research and Development Organisation - DRDO, Ministry of Defence, Government of India |url=https://www.drdo.gov.in/drdo/htt-40-spin-demonstration |access-date=2025-01-09 |website=www.drdo.gov.in}}</ref>

By August 2021, the HTT-40 had completed its spin certification flight testing.<ref>{{Cite web |url=https://www.airrecognition.com/index.php/news/defense-aviation-news/2021/august/7509-india-htt-40-training-aircraft-ready-for-operational-clearance.html |title=India: HTT-40 training aircraft ready for operational clearance |website=www.airrecognition.com}}</ref> The platform received its provisional certificate of airworthiness from the Centre for Military Airworthiness and Certification (CEMILAC) on 6 June 2022.<ref>{{Cite web |last=Thapar |first=Vishal |date=7 June 2022 |title=Big Make In India Milestone, As HAL's Basic Trainer Aircraft Gets Airworthiness Certification |url=http://businessworld.inhttps//www.businessworld.in/article/Big-Make-In-India-Milestone-As-HAL-s-Basic-Trainer-Aircraft-Gets-Airworthiness-Certification/07-06-2022-431674 |access-date=2022-10-20 |website=BW Businessworld |language=en}}</ref>

== Production == In January 2020, HAL announced that limited series production is to start in year 2020–21.<ref>{{Cite web |last1=Ht |first1=Rahul Singh |date=January 11, 2020 |title=HAL needs new orders to prevent complete halt of production after 2021-22 |url=https://theprint.in/defence/hal-needs-new-orders-to-prevent-complete-halt-of-production-after-2021-22/348108/ |website=ThePrint}}</ref> On 11 August 2020, the Defence Acquisition Council approved procuring 106 HTT-40s for the Indian Air Force.<ref>{{Cite web |date=2020-08-11 |title=IAF to get Made in India trainer aircraft from HAL; DAC approves proposals worth Rs 8722 crore |url=https://www.financialexpress.com/defence/iaf-to-get-made-in-india-trainer-aircrafts-from-hal-dac-approves-proposals-worth-rs-8722-crore/2052135/ |access-date=2020-08-11 |website=The Financial Express |language=en-US}}</ref> At Aero India 2021, HAL received request for proposal from the IAF for 70 HTT40s with an option for 38 more. Production will take place at the Bangalore and Nashik manufacturing plants.<ref>{{Cite web |last=Urs |first=Anil |date=4 February 2021 |title=HAL hopes to fly high with CATS Warrior and RUAV drones |url=https://www.thehindubusinessline.com/news/hal-hopes-to-fly-high-with-cats-warrior-and-ruav-drones/article33752827.ece |access-date=2021-03-30 |website=Business Line |language=en}}</ref><ref>{{Cite web |last=Bedi |first=Rahul |date=4 February 2021 |title=Aero India 2021: Indian Air Force issues RFP to HAL for 70 basic trainers |url=https://www.janes.com/defence-news/news-detail/aero-india-2021-indian-air-force-issues-rfp-to-hal-for-70-basic-trainers |url-status=live |archive-url=https://web.archive.org/web/20230130060217/https://www.janes.com/defence-news/news-detail/aero-india-2021-indian-air-force-issues-rfp-to-hal-for-70-basic-trainers |archive-date=30 January 2023 |access-date=2023-01-30 |website=Janes.com |publisher=Janes Information Group |language=en}}</ref>

At DefExpo 2022, IAF and HAL concluded {{INRConvert|6800|c|lk=on|year=2022}} crore contract for 70 HTT-40. The remaining 36 will be procured after operationalization of HTT-40, with a possible follow on of 38 more units.<ref>{{Cite news |last=Peri |first=Dinakar |date=2022-10-20 |title=IAF-HAL conclude ₹6,800 crore contract for 70 HTT-40 trainer aircraft |url=https://www.thehindu.com/news/national/iaf-hal-conclude-6800-crore-contract-for-70-htt-40-trainer-aircraft/article66037061.ece |access-date=2022-10-20 |work=The Hindu |language=en-IN |issn=0971-751X}}</ref> On 28 July 2022, HAL signed a $100 million deal with Honeywell Aerospace for the supply of 88 TPE331-12B engines with support kits for the programme. While 32 would be delivered directly by the firm, the rest would be manufactured by HAL in India under a transfer of technology agreement.<ref name=":1">{{Cite news |last=Singh |first=Rahul |date=2025-09-15 |title=HAL's HTT-40 basic trainer aircraft nears milestone, set for maiden flight |url=https://www.hindustantimes.com/india-news/htt40-basic-trainer-aircraft-nears-milestone-set-for-maiden-flight-101757877157326.html |access-date=2025-09-16 |work=Hindustan Times}}</ref> A Manufacturing and Repair license agreement was also signed.<ref>{{Cite news |date=2022-07-27 |title=HAL signs USD 100 mn engine contract with Honeywell |url=https://timesofindia.indiatimes.com/hal-signs-usd-100-mn-engine-contract-with-honeywell/articleshow/93163416.cms |access-date=2025-09-16 |work=The Times of India |issn=0971-8257}}</ref><ref>{{Cite news |last=Shukla |first=Ajai |date=2022-07-28 |title=Hindustan Aeronautics signs $100-mn deal with Honeywell for trainer engines |url=https://www.business-standard.com/article/companies/hindustan-aeronautics-signs-100-mn-deal-with-honeywell-for-trainer-engines-122072800060_1.html |url-status=live |archive-url=https://web.archive.org/web/20250916174523/https://www.business-standard.com/article/companies/hindustan-aeronautics-signs-100-mn-deal-with-honeywell-for-trainer-engines-122072800060_1.html |archive-date=2025-09-16 |access-date=2025-09-16 |work=Business Standard}}</ref>

On 6 March 2023, an agreement was signed to supply the IAF with HTT-40 aircraft and related equipment. The aircraft delivery will begin in September 2025 and be completed by March 2029.<ref>{{Cite web |date=10 October 2025 |title=2023-24 Annual Report |url=https://mod.gov.in/sites/default/files/AR_2023-24-new-23-9-2025.pdf |access-date=10 October 2025 |website=Ministry of Defence, Government of India}}</ref> A total of 12 HTT-40 are to be delivered in the year, including 10 from Nashik and 2 from Bangalore production line. This would be followed by 20 aircraft per year including 15 and 5 aircraft from Nashik and Bangalore production line, respectively.<ref>{{Cite news |last=Singh |first=Rahul |date=2023-10-17 |title=Known for wine, Nashik is the next aircraft manufacturing hub as HAL spreads wings |url=https://www.hindustantimes.com/india-news/known-for-wine-nashik-is-the-next-aircraft-manufacturing-hub-as-hal-spreads-wings-101697481119234.html |access-date=2024-01-06 |work=Hindustan Times}}</ref>

One of the prototype of the aircraft participated in the inaugural flypast at the Aero India 2025 event.<ref>{{Cite web |last=Ray |first=Kalyan |date=2025-02-10 |title=India's first home grown basic trainer aircraft HTT 40 expected to be delivered to IAF by September |url=https://www.deccanherald.com/india/indias-first-home-grown-basic-trainer-aircraft-htt-40-expected-to-be-delivered-to-iaf-by-september-3399037 |access-date=2025-02-12 |website=Deccan Herald |language=en}}</ref> As of 14 September, HAL was preparing for the maiden flight of a serial production HTT-40 aircraft within two weeks. The flight would be conducted using a Category B engine which was used by one of the prototypes since Honeywell has not commenced engine deliveries due to supply chain issues. The first engine is to be delivered in November, followed by six more engines by end of fiscal year, at a rate of two units per month though HAL has asked them to try and supply more engines. Meanwhile, HAL plans to deliver the first aircraft by January 2026 with another 11 to be delivered by March 2026. The aircraft will have an initial indigenous content of 56% which will be enhanced to over 60% later.<ref name=":1" />

The second production line of HTT-40 along with the third production line of Tejas Mk1A at HAL's Nashik facility was inaugurated by the Defence Minister, Rajnath Singh on 17 October. The preceding production lines of both aircraft is based in Bengaluru. A flying formation of Tejas, Su-30MKI and HTT-40 was exhibited on the occasion.<ref name=":02">{{Cite news |date=2025-10-17 |title=First Tejas-Mk1A from Nashik completes maiden flight; gets water cannon salute — Watch |url=https://timesofindia.indiatimes.com/india/first-tejas-mk1a-from-nashik-completes-maiden-flight-induction-to-take-time/articleshow/124622119.cms |access-date=2025-10-17 |work=The Times of India |issn=0971-8257}}</ref><ref name=":12">{{Cite news |last=C.S |first=Hemanth |date=2025-10-17 |title=LCA Tejas Mk1A manufactured in Nashik plant of HAL completes maiden flight |url=https://www.thehindu.com/news/national/lca-tejas-mk1a-manufactured-in-nashik-plant-of-hal-completes-maiden-flight/article70174483.ece |access-date=2025-10-17 |work=The Hindu |language=en-IN |issn=0971-751X}}</ref><ref>{{Cite web |last=Sharma |first=Shivani |date=2025-10-15 |title=Tejas Mk1A to take off from Nashik on Friday, but Air Force still awaits delivery |url=https://www.indiatoday.in/india/story/tejas-mk1a-to-take-off-from-nashik-on-friday-but-air-force-still-awaits-delivery-2803489-2025-10-15 |access-date=2025-10-15 |website=India Today |language=en}}</ref>

The maiden flight of the first serial production HTT-40 aircraft wth tail number ''TH-4001'' was successfully conducted on 24 October 2025 from HAL Airport in Bengaluru.<ref>{{Cite web |last=Sharma |first=Sheenu |date=2025-10-24 |title=HTT-40 soars: India's indigenous trainer aircraft makes maiden flight, marks milestone for HAL and IAF |url=https://www.indiatvnews.com/news/india/htt-40-soars-india-indigenous-trainer-aircraft-makes-maiden-flight-marks-milestone-for-hal-iaf-hindustan-turbo-trainer-2025-10-24-1014243 |access-date=2025-10-24 |website=India TV News |language=en}}</ref><ref>{{Cite web |title=MSN |url=https://www.msn.com/en-in/news/other/india-s-skies-witness-historic-moment-as-indigenous-fighter-trainer-takes-flight/ar-AA1P7E5e?ocid=msedgntp&pc=U531&cvid=7132f71ebcfb45318467d32a1f0199f5&ei=62 |access-date=2025-10-24 |website=www.msn.com}}</ref> The same for the first aircraft from the Nashik production line, also the second serial production aircraft, with tail number TH-4002, was conducted on 5 December 2025.<ref>{{Cite tweet |number=1996944160494878958 |user=alpha_defense |title=The second Hindustan Turbo Trainer 40 ( HTT-40) series production aircraft... |date=2025-12-05 |access-date=2025-12-06}}</ref><ref>{{Cite web |date=2025-12-06 |title=From Prototype to Production: HAL HTT-40 TH-4002 Soars in Maiden Flight from Nashik Facility |url=https://indianmasterminds.com/news/second-hal-htt-40-series-production-trainer-aircraft-completes-maiden-flight-nashik-165820/ |access-date=2025-12-06 |website=indianmasterminds.com}}</ref>

Although HAL was scheduled to deliver 12 HTT-40 trainer aircraft to the Indian Air Force in FY2025-26, the numbers were revised to three in December 2025. The delivery of the first engine were again shifted to January 2026, followed by another four by March 2026 and subsequent two engines per month.<ref>{{Cite web |date=2025-12-12 |title=HAL revises LCA Mk-1A, basic trainer delivery targets |url=https://www.hindustantimes.com/india-news/hal-revises-lca-mk-1a-basic-trainer-delivery-targets-101765479644922.html |access-date=2025-12-12 |website=Hindustan Times |language=en}}</ref> The first three engines were delivered by 27 May.<ref>{{Cite web |last=Singh |first=Rahul |date=2026-05-28 |title=US firm delivers 3 engines for delayed basic trainer aircraft |url=https://www.hindustantimes.com/india-news/indias-delayed-trainer-aircraft-gets-critical-engine-boost-101779908761682.html |access-date=2026-05-28 |website=Hindustan Times |language=en}}</ref>

==Operators==

{{IND}} * Indian Air Force — 70 on order<ref>{{Cite web|title=Union Cabinet approves procurement of 70 HTT-40 Basic Trainer Aircraft from HAL for Indian Air Force at a cost of over Rs 6,800 crore|url=https://pib.gov.in/PressReleasePage.aspx?PRID=1903445|access-date=2023-03-01|website=pib.gov.in|language=en}}</ref><ref>{{Cite news |last=Peri |first=Dinakar |date=2022-10-20 |title=IAF-HAL conclude ₹6,800 crore contract for 70 HTT-40 trainer aircraft |language=en-IN |work=The Hindu |url=https://www.thehindu.com/news/national/iaf-hal-conclude-6800-crore-contract-for-70-htt-40-trainer-aircraft/article66037061.ece |access-date=2023-01-30 |issn=0971-751X}}</ref>

==Specifications (HTT-40)== {{Aircraft specs |ref=''Jane's All the World's Aircraft''<ref name="jawa-1617">{{cite book|editor1-last=Jackson|editor1-first=Paul|editor2-last=Peacock|editor2-first=Lindsay|editor3-last=Bushell|editor3-first=Susan|editor4-last=Willis|editor4-first=David|editor5-last=Winchester|editor5-first=Jim|title=IHS Jane's All the World's Aircraft: Development & Production|date=2016–2017|location=Coulsdon|isbn=978-0710631770|page=306|chapter=India|publisher=Janes Information Group}}</ref> |prime units?=met  |genhide=

|perfhide=

|max speed kmh=400 |max speed mph=249 |max speed kts=216 |max speed note= |cruise speed kmh= |cruise speed mph= |cruise speed kts= |cruise speed note= |stall speed kmh= |stall speed mph= |stall speed kts= |stall speed note= |never exceed speed kmh=450 |never exceed speed mph=279 |never exceed speed kts=243 |never exceed speed note= |range km=1000 |range miles=621 |range nmi=540 |range note= |combat range km= |combat range miles= |combat range nmi= |combat range note= |ferry range km= |ferry range miles= |ferry range nmi= |ferry range note= |endurance= |ceiling m=6000 |ceiling ft=19680 |ceiling note= |g limits=+6/-3 |roll rate= |glide ratio= |climb rate ms= |climb rate ftmin= |climb rate note= |time to altitude= |lift to drag= |wing loading kg/m2= |wing loading lb/sqft= |wing loading note= |power/mass= |thrust/weight= |more performance=  |armament=*Can be armed with a gun, rockets and bombs<ref name="BS15Apr13">{{cite news|title=HAL's trainer pitted as Rs 4,500 cr cheaper than Swiss Pilatus trainer |first=Ajai |last=Shukla |url=http://www.business-standard.com/article/economy-policy/hal-s-trainer-pitted-as-rs-4-500-cr-cheaper-than-swiss-pilatus-trainer-113041500059_1.html|access-date=16 April 2013|newspaper=Business Standard|date=15 April 2013}}</ref><ref name=bm6f9f>{{cite news|title='Our trainer aircraft 40 times better than F-16s' |url=https://bangaloremirror.indiatimes.com/bangalore/others/Our-trainer-aircraft-40-times-better-than-F-16s/articleshow/21235150.cms|access-date=9 February 2013|newspaper=Bangalore Mirror|date=6 February 2013}}</ref> |guns= |bombs= |rockets= |missiles=

|hardpoints= |hardpoint capacity= |hardpoint rockets= |hardpoint missiles= |hardpoint bombs= |hardpoint other= |other armament= |avionics= }}  {{aircontent  |see also= |related= |similar aircraft= |lists= }}

==See also== {{Portal|India|Aviation}} {{aircontent| |similar aircraft= * Beechcraft T-6 Texan II * Embraer EMB 312 Tucano * Fuji T-7 * Pilatus PC-7 * Pilatus PC-9 * PZL-130 Orlik * Short Tucano * TAI Hürkuş |lists=

|see also= }}

==References== {{Reflist}}

==External links== {{Commons category-inline|HAL HTT-40}}

HTT-40 Category:2010s Indian military trainer aircraft Category:Single-engined tractor aircraft Category:Single-engined turboprop aircraft Category:Low-wing aircraft Category:Aircraft first flown in 2016 Category:Aircraft with retractable tricycle landing gear