{{short description|1990s Australian piston aircraft engine}} {{Use dmy dates|date=November 2019}} {{infobox aero engine |name = Jabiru 3300 |image = Jabiru3300.jpg |caption = |engine_type=Piston aero engine |manufacturer=Jabiru Aircraft |national_origin=Australia |first_run= |major_applications= |number_built = |developed_from = |variants_with_their_own_articles = |developed_into = Jabiru 5100 }}

The '''Jabiru 3300''' is a lightweight four-stroke, horizontally opposed "flat-six" air-cooled aircraft engine produced by Jabiru Aircraft. The engines are direct drive and fitted with alternators, silencers, vacuum pump drives and dual ignition systems as standard. The engine is used to power homebuilt and ultralight aircraft. thumb|underside of a Jabiru 3300

==History==

Jabiru Aircraft began as a builder of small two-seater aircraft in Bundaberg, Australia.<ref>{{cite web |url=http://www.jabiru.net.au/about |title=About |publisher=Jabiru.net.au |access-date=2013-10-08 |url-status=dead |archiveurl=https://web.archive.org/web/20131206080043/http://www.jabiru.net.au/about |archivedate=2013-12-06 }}</ref> It turned to producing its own engines when supplies of the Italian-sourced engines previously used dried up.<ref>{{Cite web|url=http://web.aeromech.usyd.edu.au/AERO1400/Jabiru_Construction/jabiru.html|title=Background to the Development of the Jabiru|last=|first=|date=|website=web.aeromech.usyd.edu.au|publisher=|access-date=2016-08-12}}</ref> Jabiru engines were designed to be manufactured in small batch quantities, so the firm used CNC machines to mill major engine parts such as cylinder blocks and heads, rather than using cast items.<ref>{{cite web|url=http://www.jabiru.net.au/engines |title=Engines|publisher=Jabiru.net.au |date=2012-07-12 |access-date=2013-10-08}}</ref> For the fourth generation of the design, more cast and forged components (including cast cylinder heads and forged connecting rods) replace components which were previously machined from billet.<ref>{{cite web|url=http://www.jabiru.net.au/engines |title=Engines|publisher=Jabiru.net.au |access-date=2024-01-30}}</ref> The 3300 is a modular development of Jabiru's flat-four 2200 engine.

In November 2014, the Australian Civil Aviation Safety Authority proposed restricting all Jabiru-powered aircraft to day-visual flight rules only, without passengers or solo students and within gliding distance of a safe place to land due to the engine line's safety record. This was in response to 46 reports of engine failure in flight. In-flight failure modes included, but were not limited to: fuel starvation; valve/port collapse & breakage of critical bolts.<ref>''RA-Aus Response'', Sport Pilot Magazine (Australia), Feb 2015, page 27</ref><ref>{{cite web|url=https://www.shine.com.au/blog/aviation-law-news/operating-limitations-on-aircraft-with-jabiru-engines.|title=Limitations on aircraft with Jabiru engines - Shine Lawyers|work=Shine Lawyers|accessdate=29 May 2016}}</ref><ref>{{cite web|url=http://www.australianflying.com.au/news/casa-issues-jabiru-engine-update|title=CASA issues Jabiru Engine Update|work=australianflying.com.au|accessdate=29 May 2016}}</ref> Both the manufacturer and Recreational Aviation Australia opposed the restrictions as unnecessary and unwarranted.<ref name="Niles15Nov14">{{cite news|url = http://www.avweb.com/avwebflash/news/Australia-Eyes-Jabiru-Restrictions223107-1.html|title = Australia Eyes Jabiru Restrictions|accessdate = 17 November 2014|last = Niles|first = Russ|date = 15 November 2014| work = AVweb}}</ref> The final rule adopted somewhat softened the restrictions, allowing the carriage of passengers and students, but requiring them to sign an acknowledgement of risk before flying and restricting equipped aircraft to day VFR flight and within gliding distance of a safe place to land.<ref name="Niles21Dec14">{{cite news|url = http://www.avweb.com/avwebflash/news/CASA-Issues-Jabiru-Final-Rule223279-1.html|title = CASA Issues Jabiru Final Rule|accessdate = 22 December 2014|last = Niles|first = Russ|date = 21 December 2014| work = AVweb}}</ref>

A subsequent tear-down of one engine by CASA resulted in recommendations in June 2016 for further easing of the restrictions.<ref>{{cite web|url = http://jabiruna.com/wp-content/uploads/2016/07/Jabiru-Engine-Reliability-Analysis-2.pdf|archive-url = https://web.archive.org/web/20170115150344/http://jabiruna.com/wp-content/uploads/2016/07/Jabiru-Engine-Reliability-Analysis-2.pdf|url-status = usurped|archive-date = 15 January 2017|title = Jabiru Engine Reliability|accessdate = 13 March 2017|author=Civil Aviation Safety Authority|author-link=Civil Aviation Safety Authority|work = jabiruna.com|date = 8 June 2016 }}</ref>

==Applications== {{columns-list|colwidth=30em| *Aerocomp VM-1 Esqual *Aeromarmi Stela M1 *Albaviation D24 MagicOne *Alpi Pioneer 300 *Arion Lightning *Australian Lightwing SP-2000 Speed *BRM Argos *Bushcaddy R-120 *Creative Flight Aerocat *CZAW Parrot *Europa XS *Europa Classic *Fisher Dakota Hawk *Flaeming Air FA 04 Peregrine *Ion Aircraft Ion *Jabiru J230 *Jabiru J430 *Just Superstol *MySky MS One *Nexaer LS1 *Pulsar Aircraft Pulsar *Rand Robinson KR-2S *Sonex Aircraft Sonex *Sonex Xenos *Titan Tornado *ULBI Wild Thing }}

==Specifications== {{pistonspecs| <!-- If you do not understand how to use this template, please ask at Wikipedia talk:WikiProject Aircraft --> <!-- Please include units where appropriate (main comes first, alt in parentheses). If data are missing, leave the parameter blank (do not delete it). For additional lines, end your alt units with )</li> and start a new, fully formatted line with <li> --> |type=Flat-6 |bore=97.5&nbsp;mm (3.84 in) |stroke=74&nbsp;mm (2.91 in) |displacement=3,300 cm³ (201.4 in³) |length=671&nbsp;mm (26.42 in) |diameter= |width=582&nbsp;mm (22.91 in) |height=445&nbsp;mm (17.54 in) |weight=81&nbsp;kg (178 lbs) with exhaust, carburetors, starter motor, alternator & ignition system |valvetrain= |supercharger= |turbocharger= |fuelsystem=Mechanical fuel pump |fueltype=AVGAS 100/130 or Auto Gas 91 MON (97 RON) Minimum |oilsystem=Wet sump |coolingsystem=Air-cooled, oil cooling (optional, but usually necessary) |power=79.8 kW (107 hp) at 2,750 RPM (continuous); 89.5 kW (120&nbsp;hp) at 3,300&nbsp;RPM (intermittent) |specpower= |compression=8:1 |fuelcon= |specfuelcon= |oilcon= |power/weight=1.10 kW/kg }}

==See also== * Jabiru 2200 * CAMit 3300 * List of aircraft engines '''Comparable engines:''' * Continental O-200 * D-Motor LF39 * Lycoming IO-233 * Sauer S 2100 ULT * ULPower UL390i

==References== {{Commons category}} {{Reflist}} * [http://www.jabiru.net.au/6%20cylinderbodyFrame-1.htm Jabiru Aircraft: 6 Cylinder Engine] {{Webarchive|url=https://web.archive.org/web/20070829173440/http://jabiru.net.au/6%20cylinderbodyFrame-1.htm |date=29 August 2007 }} * [https://web.archive.org/web/20090927032109/http://www.usjabiru.com/3300.html JABIRU 3300cc AIRCRAFT ENGINE]

{{Jabiru aeroengines}}

Category:Boxer engines Category:1990s aircraft piston engines Category:Jabiru aircraft engines Category:Six-cylinder engines