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Diamond DA42 Twin Star

Twin-Engine Light Utility Aircraft [ 2004 ]

Hundreds of the Austrian-originated Diamond DA42 twins have been produced since service introduction in 2004.

Authored By: Staff Writer | Last Edited: 03/06/2022 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.

The DA42 "Twin Star" is a lightweight, twin-engined utility-minded VIP passenger hauler and flight trainer aircraft designed, developed and produced by Diamond Aircraft Industries of Austria. A first-flight in prototype form was recorded on December 9th, 2002 and the design entered formal service operations during 2004. It remains in production (since 2002) with over 600 units completed. The DA42 became the company's first entry into the multi-engine aircraft market and succeeded the single-engined DA40 model of 1997. European certification followed in April of 2004 and U.S. certification was granted in 2005.

The aircraft utilizes a robust, easy-to-maintain carbon composite airframe as well as sleek aerodynamics throughout for both a weight-savings measure and to promote air flow efficiency - resulting in higher performance for a product of this class. The nose section is flat and wide and the overall fuselage shaping incorporates noticeable tapering aft of the cabin section. The tail unit showcases extensions from the vertical rudder at both its ventral and dorsal lines offering greater surface area without much added drag. The tail unit is capped by split horizontal planes in a proven Multhopp T-style arrangement. The wing mainplanes are set low against the sides of the fuselage and have upturned "winglets" at their tips (another fuel efficiency measure). Each engine nacelle is tightly cowled, streamlined, and integrated into the lines of each wing mainplane. A typical tricycle wheeled undercarriage is utilized for ground-running (nose leg and two main legs, all retractable).

Its Maximum Take-Off Weight (MTOW) is 4,407lb while the Maximum Zero Fuel Weight (MZFW) is listed at 4,045lb. Standard empty weight is 3,109lb. Dimensions include a running length of 28.1 feet, a wingspan of 44.6 feet, and a height of 8.2 feet.

The cockpit takes a panoramic approach when providing the pilot and occupants with the best possible vision. Window spaces are large and elegantly curved for maximum viewing over the nose and wings of the airframe. Entry-exit into the aircraft is accomplished by a forward-hinged swinging canopy door and upward-opening large rear access panels. The cabin contains folding seats and luggage storage. There is additional storage to be found at the nose section as well. Cabin finishes can be customized to suit the customer and his/her clientele. The cockpit carries a Garmin G1000 series avionics fit with 3-axis GFC7000 Automated Flight Control System. There is seating for four (2x2) including the pilot (three passengers can be carried). In many respects, the DA42 is a "luxury car for the sky".

Initial models were powered by Thielert TAE 125-01 "Centurion" diesel-fueled engines but financial issues with the engine-maker forced Diamond to select the Austro AR300 line for 2009 (DA42 production was actually suspended back in July 2008 because of the Thielert issue). As such, power to newer models is from 2 x Austro AE300 turbocharged jet-fueled piston engines driving three-bladed MT hydraulic constant speed, low noise propeller units in conventional puller fashion. A single throttle control lever operates power to both engine fits for added operator simplicity. Each unit is also digitally controlled with single-switch feathering as needed (FADEC arrangement). Fuel capacity reaches 79.4 USG. Performance specs include a maximum speed of 221 miles per hour, a range out to 1,052 miles, and a service ceiling up to 18,000 feet. Rate-of-climb is reported at 1,280 feet-per-minute.©MilitaryFactory.com
Optional components and systems for the DA42 include an electric air conditioner, ice protection system, and double bubble canopy. The cockpit can be expanded through various additions all its own including the Avidyne TAS 605 traffic advisory system, the Garmin GDL69A satlink-XM weather and radio fit, and the Garmin Synthetic Vision Technology (SVT) Unit.

While the DA42 series has found its way into many flight training schools and special service divisions, it has also found favor with a select few military operators worldwide. This includes the Argentine Army, the Ghana Air Force, the Jamaican Defence Force, the Niger Air Force, Russian Federal Security Services, the Swiss military, the Royal Thai Air Force, the Turkmen Air Force, Ukrainian Border Guard Services, the British Royal Air Force, and the Venezuelan Air Force as of this writing (2018).

There are few variants in the DA42 line beyond the original DA42. The DA42M is marked as a "special mission" platform while the DA42NG fits the AE 300 series engine of 170 horsepower (each unit). The DA42 L360 flies with Lycoming IO-360 engines of 180 horsepower each and these are fueled by 100LL fuel instead of the typical Jet-A1. The DA42MPP is a multi-purpose design outfitted with surveillance and mapping equipment for the special services and military sectors. The DA42 MPP "Centaur OPA" is the DA42 modified by Aurora Flight Sciences to operate either manned or unmanned. The DA-42-VI is an improved form of the DA42 and brought online in March of 2012. Much care has been taken to streamline the original offering to help increase cruising speeds and performance.

The Aeronautics Defense "Dominator" is an offshoot of the DA42 and is a modified military and special services Unmanned Aircraft System (UAS) platform developed by Israeli industry. This entry is detailed elsewhere on this site.©MilitaryFactory.com
Note: The above text is EXCLUSIVE to the site www.MilitaryFactory.com. It is the product of many hours of research and work made possible with the help of contributors, veterans, insiders, and topic specialists. If you happen upon this text anywhere else on the internet or in print, please let us know at MilitaryFactory AT gmail DOT com so that we may take appropriate action against the offender / offending site and continue to protect this original work.


Service Year

Austria national flag graphic

In Active Service.


Diamond Aircraft Industries - Austria
(View other Aviaton-Related Manufacturers)
National flag of Argentina National flag of Niger National flag of Russia National flag of Switzerland National flag of Thailand National flag of Turkmenistan National flag of Ukraine National flag of the United Kingdom National flag of Venezuela Argentina; Ghana; Jamaica; Niger; Russia; Switzerland; Thailand; Turkmenistan; Ukraine; United Kingdom; Venezuela
(OPERATORS list includes past, present, and future operators when applicable)
Special-Mission: Airborne Early Warning (AEW)
Specially-equipped platform providing over-battlefield Command and Control (C2) capability for allied aerial elements.
Special-Mission: Anti-Submarine Warfare (ASW)
Equipped to search, track, and engage enemy underwater elements by way of specialized onboard equipment and weapons.
Special-Mission: Anti-Ship
Equipped to search, track, and engage enemy surface elements through visual acquisition, radar support, and onboard weaponry.
Special-Mission: Electronic Warfare (EW)
Equipped to actively deny adversaries the ElectroMagnetic (EM) spectrum and protect said spectrum for allied forces.
Special-Mission: Search & Rescue (SAR)
Ability to locate and extract personnel from areas of potential harm or peril (i.e. downed airmen in the sea).
Commercial Aviation
Used in roles serving the commercial aviation market, ferrying both passengers and goods over range.
VIP Service
Used in the Very-Important-Person (VIP) passenger transport role, typically with above-average amenities and luxuries as standard.
Special Forces
Serving Special Forces / Special Operations elements and missions.
Training (General)
Developed ability to be used as a dedicated trainer for student pilots (typically under the supervision of an instructor).
Training (Basic)
Used in the aerial training role to cover basics of flight, general handling, take-off/landing actions, and related.
Unmanned Capability
Aircraft inherently designed (or later developed) with an unmanned capability to cover a variety of over-battlefield roles.

28.1 ft
(8.55 m)
44.0 ft
(13.42 m)
8.2 ft
(2.50 m)
Empty Wgt
2,756 lb
(1,250 kg)
3,748 lb
(1,700 kg)
Wgt Diff
+992 lb
(+450 kg)
(Showcased structural values pertain to the base Diamond DA42 Twin Star production variant)
Installed: 2 x Austro turbocharged diesel engines developing 168 horsepower each and driving three-bladed propeller units.
Max Speed
221 mph
(355 kph | 192 kts)
18,045 ft
(5,500 m | 3 mi)
1,056 mi
(1,700 km | 3,148 nm)
1,280 ft/min
(390 m/min)

♦ MACH Regime (Sonic)
RANGES (MPH) Subsonic: <614mph | Transonic: 614-921 | Supersonic: 921-3836 | Hypersonic: 3836-7673 | Hi-Hypersonic: 7673-19180 | Reentry: >19030

(Showcased performance specifications pertain to the base Diamond DA42 Twin Star production variant. Performance specifications showcased above are subject to environmental factors as well as aircraft configuration. Estimates are made when Real Data not available. Compare this aircraft entry against any other in our database or View aircraft by powerplant type)

Supported Types

(Not all ordnance types may be represented in the showcase above)
DA42 - Base Production Model
DA42-VI - Improved DA42 production model of 2012; additional streamlining for increased operating speeds.
DA42M - Special mission platform
DA42 L360 - Fitted with Lycoming IO-360 engine of 180 horsepower; flight training variant.
DA42NG - Fitted with Austro Engine AE300 series engine of 170 horsepower; model of 2009.
DA42MPP - Multi-Purpose Platform variant; manned or unmanned.
Dominator II - UAV variant of the DA42 modified by Aeronautics Defense Systems Ltd of Israel; first flown in 2009.
Dominator XP - Unmanned over-land / maritime ISR patroller drone.

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Images Gallery

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Image of the Diamond DA42 Twin Star
Image from official Diamond Aircraft marketing materials.


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