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Diamond DA40 (Diamond Star)

Light-class Trainer / Utility Aircraft

Austria | 1997

"The Diamond DA40 series of lightweight aircraft has seen adoption by various military services of the world including Austria, Singapore, and the United States."

Authored By: Staff Writer | Last Edited: 09/08/2022 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site; No A.I. was used in the generation of this content.
The Diamond "DA40" (Diamond Star / Star) is a lightweight, four passenger general aviation aircraft to come from Diamond Aircraft Industries of Austria. The type is a further development of the company's twin-seat "DA20", of which over 2,000 examples were produced from 1994 onwards, and follows much of its form-and-function. A first-flight for the DA40 was recorded on November 5th, 1997 and production has been ongoing since with over 2,200 units to date.

Beyond their commercial sector usage, the DA40 series has been adopted by some world military air powers to be used as a flight trainer for new generations of pilots. This includes Australia, Austria, Bangladesh, Bolivia, Ecuador, Indonesia, Jamaica, Singapore, and the United States.

The aircraft utilizes the tried-and-true single-engine configuration with the powerplant embedded in the nose. The engine drives a three-bladed propeller unit. Aft of the engine mounting is the side-by-side cockpit which seats the pilot and up to three passengers in comfort. Large windscreens are provided for excellent vision out-of-the-cockpit. The wings are of monoplane form and fitted low along the sides of the fuselage. A slight upturn of the tips is seen at the end of each mainplane member. The tail unit incorporates a Multhopp-style T-plane arrangement seating the horizontal plane high atop the vertical fin. The undercarriage is of tricycle arrangement and fixed with some versions featuring streamlined fairings over the wheels for inherent aerodynamics. Construction of the aircraft is largely of composites.

The aircraft has a running length of 26.6 feet with a wingspan of 39 feet and a height of 6.5 feet. Empty weight is 1,755lb against a gross of 2,640lb. Power is from a Lycoming IO-360-M1A 4-cylinder, air-cooled, horizontally-opposed piston engine delivering 180 horsepower. Cruising speeds reach 175 miles-per-hour with ranges out to 835 miles and a service ceiling up to 16,000 feet. Rate-of-climb is listed at 1,120 feet-per-minute.

Initial production models were designated simply as "DA40" fitted with Textron Lycoming IO-360 M1A engine of 180 horsepower. The "DA40 D" then followed and carried the Thielert TAE 125-01 or TAE 125-02-99 engines and has reduced maximum gross weights for European airspace operations. The short-lived "DA40F" / "DA40 FP" was powered by the Textron Lycoming O-360-A4M engine.

The "DA40" NG represents the current offering of the line and carries a local Austro Engine AE 300 powerplant utilizing JET A-1 fuel. European certification was granted in April 2010 and some 500 units have been produced since.

The DA40 XLT appeared in April of 2013 and numerous updates and upgrades internally. The DA40 "Tundra Star" was given a reinforced undercarriage and carries an Austro AE300 diesel engine of 168 horsepower. The eDA40 is an all-electric aircraft reveled in October 2021.

The "T-52A" marks a military trainer model operated by the United States Air Force Academy. Some twenty airframes were produced in 2009. It has since been succeeded in inventory by the Cirrus SR-20 (operated as the "T-53A)".

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October 2018 - A modified hybrid-electric DA40 was flown for the first time on October 31st, 2018 out of Wiener Neustadt in Austria.

Power & Performance
Those special qualities that separate one aircraft design from another. Performance specifications presented assume optimal operating conditions for the Diamond DA40XL Diamond Star Light-class Trainer / Utility Aircraft.
1 x Lycoming IO-360-M1A air-cooled, 4-cylinder piston engine developing 180 horsepower driving three-bladed propeller unit at the nose.
174 mph
280 kph | 151 kts
Max Speed
115 mph
185 kph | 100 kts
Cruise Speed
16,404 ft
5,000 m | 3 miles
Service Ceiling
833 miles
1,340 km | 724 nm
Operational Range
1,120 ft/min
341 m/min
City-to-City Ranges
Operational range when compared to distances between major cities (in KM).
The nose-to-tail, wingtip-to-wingtip physical qualities of the Diamond DA40XL Diamond Star Light-class Trainer / Utility Aircraft.
26.6 ft
8.10 m
O/A Length
39.0 ft
(11.90 m)
O/A Width
6.5 ft
(1.98 m)
O/A Height
1,764 lb
(800 kg)
Empty Weight
2,646 lb
(1,200 kg)
Design Balance
The three qualities reflected below are altitude, speed, and range. The more full the box, the more balanced the design.
Notable series variants as part of the Diamond DA40 (Diamond Star) family line.
DA40 - Base Series Designation; initial production model with Textron Lycoming IO-360 M1A engine of 180 horsepower.
DA40 D - Powered by Theilert TAR 125-01 / 125-02-99 engine of 135 horsepower; European market airframe.
DA40 F / DA40 FP - Textron Lycoming O-360-A4M engine.
DA40 NG - Modern offering; powered by Austro Engine AE 300 of 165 horsepower; certified 2010.
T-52A - USAF academy designation for training purposes; since succeeded by T-53A (Cirrus SR20).
DA40 XLT - Model of April 2013; internal upgrades throughout.
DA40 "Tundra Star" - Reinforced undercarriage; powered by Austro AE300 diesel-fueled engine of 168 horsepower.
eDA40 - All-electric model of 2021.
Global customers who have evaluated and/or operated the Diamond DA40 (Diamond Star). Nations are displayed by flag, each linked to their respective national aircraft listing.

Total Production: 60 Units

Contractor(s): Diamond Aircraft Industries - Austria / China
National flag of Australia National flag of Austria National flag of Bangladesh National flag of Bolivia National flag of Ecuador National flag of Indonesia National flag of modern Jamaica National flag of Singapore National flag of the United States

[ Australia; Austria; Bangladesh; Bolivia; Ecuador; Indonesia; Jamaica; Singapore; United States ]
Relative Max Speed
Hi: 200mph
Lo: 100mph
Aircraft Max Listed Speed (174mph).

Graph Average of 150 MPH.
Era Crossover
Pie graph section
Showcasing Aircraft Era Crossover (if any)
Max Alt Visualization
Small airplane graphic
Production Comparison
Entry compared against Ilyushin IL-2 (military) and Cessna 172 (civilian) total production.
MACH Regime (Sonic)
RANGES (MPH) Subsonic: <614mph | Transonic: 614-921 | Supersonic: 921-3836 | Hypersonic: 3836-7673 | Hi-Hypersonic: 7673-19180 | Reentry: >19030
Aviation Timeline
1 / 1
Image of the Diamond DA40 (Diamond Star)
Image from Diamond Aircraft marketing materials; DA40 XLT pictured.

Mission Roles
Some designs are single-minded in their approach while others offer a more versatile solution to airborne requirements.
Some designs stand the test of time while others are doomed to never advance beyond the drawing board; let history be their judge.
Developments of similar form-and-function, or related, to the Diamond DA40 (Diamond Star) Light-class Trainer / Utility Aircraft.
Going Further...
The Diamond DA40 (Diamond Star) Light-class Trainer / Utility Aircraft appears in the following collections:
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