Diamond DA40: Definition, Performance, Specifications, Cockpit

The Diamond DA40 is a single-engine, four-seat aircraft designed for general aviation and flight training purposes. The cockpit integrates advanced avionics and autopilot systems to enhance pilot efficiency during flight operations. The cabin provides comfortable seating for passengers while maintaining aerodynamic performance. The engine and propeller configuration ensures reliable takeoff and cruising capabilities at various altitudes. Learn about the Diamond DA40's specifications, performance metrics, and design features.

The Diamond DA40 achieves a utility load of 900 pounds (408 kilograms) in its standard model. The DA40 NG variant offers a higher utility load ranging from 904 to 950 pounds (410 to 431 kilograms). The maximum takeoff weight for the standard model is 2,646 pounds (1,200 kilograms), while the DA40 NG reaches 2,888 pounds (1,310 kilograms). Full fuel capacity reduces payload capacity, with the DA40 NG allowing a payload of 678.7 pounds (308 kilograms) when fully fueled. The aircraft's empty weight ranges from 1,746 pounds (792 kilograms) to 2,043 pounds (927 kilograms), depending on equipment levels.

The Diamond DA40 cockpit features advanced avionics, including the Garmin G1000 glass cockpit system. Dual 10.4-inch Primary Flight Displays and a Multi-Function Display streamline flight instrumentation and navigation. The cockpit emphasizes ergonomic design with adjustable pilot seatbacks and rudder pedals. The cabin measures 3 feet 9 inches (1.14 meters) in height, 3 feet 8 inches (1.12 meters) in width, and 8 feet 6 inches (2.59 meters) in length. These dimensions provide ample space for pilots and passengers. Automation features including terrain proximity warnings and centralized audio controls reduce pilot workload.

The DA40 utilizes a single Lycoming IO-360-M1A engine producing 180 horsepower, achieving a maximum speed of 154 knots (285 kilometers per hour) and a range of 940 nautical miles (1,741 kilometers). The DA42 incorporates twin engines, refining safety through engine-out capability but requiring higher operational costs. The DA42 achieves a maximum speed of 197 knots (365 kilometers per hour) and a range of 1,215 nautical miles (2,250 kilometers). Both aircraft emphasize lightweight composite materials, but the DA42's larger airframe supports greater payload capacity and operational flexibility.

What is the Diamond DA40 Star?

The Diamond DA40 Star is a four-seat, single-engine light aircraft constructed from composite materials. The DA40 Diamond Star is built in Austria and Canada, developed as a version of the earlier DA20 Diamond aircraft. The Diamond DA40 features a conventional low-wing design with fixed landing gear.

Diamond Aircraft Industries manufactures the Diamond DA40 Star, a model designed as an evolution of the DA20 Diamond aircraft. The Diamond Aircraft Industries manufacturer incorporates advanced composite materials into the airframe, providing durability and reduced weight. This allows the Diamond DA40 star to achieve a maximum takeoff weight of 2,646 pounds (1,200 kilograms) while maintaining efficiency. The fixed landing gear and low-wing configuration define its classification within the general aviation aircraft category. These design elements cater to both flight training and personal flying, emphasizing light aircraft lightweight design.

The single-engine aircraft engine design of the Diamond DA40 Star integrates the Lycoming IO-360-M1A engine, boosting its operational capabilities. The engine powers the aircraft to a cruise speed of 147 knots at 75% power, with a maximum cruise speed reaching up to 158 knots in the DA40-XLS variant. A stall speed of 49 knots occurs with flaps down, allowing safe handling characteristics. Fuel burn rates measure 9.5–10 gallons (36.0–37.9 liters) per hour, contributing to light aircraft operational cost savings. The range extends to 570 nautical miles, making it suitable for long-distance travel within general aviation aircraft usage.

The cockpit of the Diamond DA40 Star features modern avionics, including the Garmin G1000 glass cockpit, aligning with specifications for advanced instrumentation. AlliedSignal Bendix avionics enhance functionality, providing pilots with state-of-the-art navigation and monitoring tools. Ergonomic design optimizes comfort and visibility, reducing pilot fatigue during extended flights. The three-blade constant-speed MT propeller complements the single-engine aircraft efficiency, allowing smooth operation across varying conditions. Composite construction supports the lightweight design, refining performance without compromising safety.

What is the utility load of a Diamond DA40?

The utility load of a Diamond DA40 is 900 lb (408 kg) for the standard model, while the DA40 NG variant offers a higher load of 904–950 lb (410–431 kg). Load capability depends on engine configuration and installed equipment. Max takeoff weight is 2,646 lb (1,200 kg) for DA40 and 2,888 lb (1,310 kg) for DA40 NG.

The standard model of the Diamond DA40 offers a utility load of 900 lb (408 kg), while the DA40 XLT achieves 897 lbs (407 kg). Maximum useful load reaches up to 915 lb (415 kg) depending on installed equipment and testing conditions. Standard equipment reduces the utility load to 860 lbs (390 kg) and as-tested values show further reductions to 824 lb (374 kg) or 584 lb (265 kg) with full fuel due to fuel weight.

The DA40 NG model provides a higher utility load range of 904–950 lb (410–431 kg). Carrying full fuel impacts payload capacity, reducing available payload to 678.7 lbs (308 kg). Fuel capacity of 39-50 gallons (147.6-189.2 liters) directly influences the trade-off between fuel and payload. Power loading of 14.7 lb/hp (6.67 kg/hp) supports balanced performance for the 180 hp (134.2 kW) Lycoming IO 360 engine used across most DA40 variants.

Diamond Aircraft's official estimates indicate a practical utility load of 600-650 lbs (272-295 kg) when operating under typical conditions. Empty weight ranges from 1,746 lbs (792 kg) to 2,043 lbs (927 kg) depending on equipment levels, impacting actual payload capacity. Pilots must account for fuel consumption and payload trade-offs during flight planning to optimize the aircraft's utility for training, personal, or family transportation purposes.

What is the cruise speed of the Diamond DA40?

The cruise speed of the Diamond DA40 is in the range of 137 to 154 knots TAS. The maximum cruise speed at 75% power is 147 knots TAS while the economy cruise speed at 50% power is 120 knots. Factors like aircraft weight and altitude influence these speeds.

The DA40 achieves a maximum cruise speed of 147 knots TAS at 75% power, reflecting its performance capabilities at lower altitudes. The DA40-XLS model further enhances this performance with a cruise speed of 150 knots (277.8 km/h) and a maximum cruise speed of 154 knots (285.2 km/h) TAS when operating at 16,000 ft (4876.8 m). The DA40 achieves an economy cruise speed of 125 knots TAS under a 60% power setting, while best economy conditions at 75% power yield a cruise speed of 137 knots TAS. At 14,000 ft (4267.2 m) and 60% power, the aircraft cruises at 124 knots TAS (230.016 km/h), balancing speed and fuel consumption effectively.

At 9,000 ft (2,743.2 m), the aircraft achieves a cruise speed of 143 knots (264.8 km/h) TAS under 75% power conditions. At 1,219.2 m and 75% power, the DA40 reaches a cruise speed of 268.54 km/h TAS. Aircraft weight and altitude influence cruise speed outcomes across various power settings. Heavier loads or variations in altitude directly affect the achievable cruise speeds, making these factors vital for flight planning and operational efficiency.

What is the range of the Diamond DA40?

The range of the Diamond DA40 is 940 nm (1,741 km) for the DA40 NG model at 60% power with climb reserves included. The DA40 XLT model has a range of 830 nm (1,537 km). Range depends on factors like power settings, altitude, and aircraft weight.

Under specific conditions, the Diamond DA40 achieves a range of 1,341 km (833 miles) at FL160 with 50% power, including climb and no reserves. This corresponds to a distance of 1,013 nautical miles under the same flight parameters. These figures highlight the aircraft's efficiency when operated at reduced power settings and optimal altitudes. The ranges differ for the DA40 NG and XLT models due to variations in power settings and operational factors.

Altitude adjustments, aircraft weight, and real-world operational constraints play a part in determining performance. Fuel consumption and engine efficiency directly influence how far the aircraft can travel. Pilots must account for these factors to maximize the range of the Diamond DA40 during cross-country flights.

What are the specifications of the DA40?

The specifications of the DA40 include a Lycoming IO-360-M1A engine with 180 hp (134.2 kW), a max speed of 158 kts (292.6 km/h), a cruise speed of 142 kts (262.9 km/h) at ISA conditions, a range of 720-830 nm (1333.4-1537.2 km), and a service ceiling of 16,400 ft (5000 m) MSL. The DA40 XLT has an MTOM of 2646 Lb (1200 kg) and a fuel capacity of 50 gal (190 L).

The specifications of the DA40 are given in the table below.

The cockpit layout of the Diamond DA40 includes advanced avionics systems like the Garmin G1000 glass cockpit, providing integrated navigation, communication, and flight instrumentation. The avionics system supports both VFR and IFR operations, refining situational awareness. The seating arrangement accommodates one pilot and three passengers in a four-seat configuration. Large-format digital displays enhance monitoring of flight instruments and engine parameters, contributing to efficient and safe operations.

What engine powers the Diamond DA40?

The engine that powers the Diamond DA40 NG is the Austro Engine AE 300 diesel piston engine with 168 HP. The AE 300 utilizes jet fuel and features a full authority digital engine control system.

The Diamond DA40 NG model integrates the Austro Engine AE 300, a 168 hp (125.3 kW) diesel engine that achieves a maximum speed of 154 kts (285.2 km/h) at 14,000 ft (4267.2 m). The Austro AE300 diesel engine (DA40 NG model) utilizes Jet A-1 fuel and incorporates advanced common-rail injection technology. The DA40 XL model employs the Lycoming IO-360-M1A, a 180 hp fuel-injected engine producing a maximum cruise speed of 147 kts. The Lycoming IO-360-M1A (equivalent to 130 kW) operates on AVGAS and is widely recognized for its reliability in training aircraft. Both engines provide distinct operational advantages, with the Austro AE300 offering superior fuel efficiency and the Lycoming IO-360-M1A delivering higher power output. Diamond Aircraft ensures compatibility with modern aviation needs by equipping the DA40 series with these two engine options.

What is the Diamond DA40 cockpit like?

The Diamond DA40 cockpit is like a modern glass cockpit, featuring advanced avionics suite navigation and ergonomic instrument panel controls. The cockpit layout emphasizes ergonomic instrument panel controls and displays arranged for optimal cockpit visibility and situational awareness. Dual 10-inch Primary Flight Displays and a Multi-Function Display enhance flight deck instrumentation accessibility. The Garmin G1000 interface integrates advanced avionics suite navigation, streamlining operations through automation features like terrain proximity warnings. Adjustable pilot seatbacks and rudder pedals boost comfort and visibility, underscoring the focus on cockpit ergonomics. Remote-mounted avionics units and a centralized audio controller optimize the flight deck layout for efficiency.

The Diamond DA40 cockpit layout prioritizes ergonomic design, featuring adjustable pilot seatbacks and rudder pedals that enhance comfort and visibility during flight operations. The cockpit dimensions include a cabin height of 3 ft 9 in (1.14 m), a width of 3 ft 8 in (1.12 m), and a length of 8 ft 6 in (2.59 m), providing ample space for pilots. Lumbar support and electrically adjustable rudder pedals further refine cockpit ergonomics, providing prolonged operational ease. The instrument panel controls are strategically placed to minimize unnecessary movements, aligning with the principles of glass cockpit integration and optimizing cockpit visibility.

Advanced avionics in the Diamond DA40 cockpit center around the Garmin G1000 interface, which includes dual 10.4-inch Primary Flight Displays and a Multi-Function Display. These sunlight-readable displays streamline flight deck instrumentation by consolidating navigation, communication, and engine information into an intuitive digital format. Automation features including terrain proximity warnings and automatic flight control systems enhance situational awareness while reducing pilot workload. Researchers like J. Tegler highlight how the integration of modular Line Replaceable Units (LRUs) simplifies maintenance and underscores the efficiency of avionics suite navigation within the DA40’s flight deck layout.

Control accessibility in the Diamond DA40 cockpit emphasizes user-friendly interaction through a streamlined arrangement of instrument panel displays and controls. The centralized audio controller and remote-mounted avionics units reduce clutter, contributing to a more organized flight deck instrumentation setup. Digitalization via the Garmin G1000 automation minimizes manual switch operations, contrasting sharply with traditional analog systems. The constant-speed propeller and standard equipment like dual Garmin GIA VHF comm units and the GMA 1347 digital audio system further demonstrate the practicality of glass cockpit digitization for diamond aircraft.

Comparative analysis reveals the DA40’s cockpit surpasses many other models in terms of functionality and training efficiency. Pilots report better comprehension of aircraft performance due to the ergonomic placement of controls and advanced technological features. Studies conducted by researchers like T. A. Babb and C. Hiers validate the effectiveness of digital tools in managing takeoff and landing distances, showcasing the synergy between cockpit ergonomics and operational precision. Diamond DA40 design focuses on creating a harmonious balance between modern avionics suite integration and pilot-centric usability, solidifying its reputation among diamond pilots.

What are the key differences between the Diamond DA-40 and DA-42?

The key differences between the Diamond DA-40 and DA-42 are engine configuration and safety features. The DA-40 has a single-engine design with lower maintenance costs while the DA-42 utilizes twin engines for boosted safety but requires more expensive operation and upkeep.

The key differences between the Diamond DA-40 and DA-42 are explained in the table below.

The cockpit layout of the Diamond DA-40 integrates ergonomic design with modern avionics, featuring a Garmin G1000 glass cockpit that emphasizes simplicity and intuitive pilot interface. The avionics configuration includes digital displays, integrated navigation systems, and communication systems customized for single-engine operations. In contrast, the Diamond DA-42 cockpit incorporates advanced avionics suites designed for twin-engine management, including multi-engine monitoring, boosted autopilot features, and incorporated safety alerts. The DA-42’s cockpit layout adapts to the demands of twin-engine systems, allowing advanced operations while maintaining ease of use through automation and redundancy.

The Diamond DA-40 airframe utilizes lightweight composite materials optimized for single-engine performance, achieving high fuel efficiency and reliability. The Diamond DA-42 airframe incorporates a larger structure with twin engines, boosting payload capacity and operational safety. The DA-42’s twin-engine design provides engine-out capability, increasing safety during single-engine failure scenarios. Both aircraft emphasize aircraft design structure and materials, reflecting Diamond Aircraft’s commitment to manufacturing quality and innovation.

The Diamond DA-40 achieves a maximum speed of 154 knots (285 kilometers per hour), a range of 940 nautical miles (1,741 kilometers), and a service ceiling of 16,400 feet (5,000 meters), excelling in fuel efficiency with a consumption rate of 5-6 gallons per hour (19-23 liters per hour). The Diamond DA-42 demonstrates superior performance with a maximum speed of 197 knots (365 kilometers per hour), a range of 1,215 nautical miles (2,250 kilometers), and a service ceiling of 18,000 feet (5,486 meters), consuming 12 gallons per hour (45.4 liters per hour) across both engines. The DA-42’s boosted climb rate and greater payload capacity make it suitable for more demanding missions. Diamond Aircraft’s design philosophy links these performance specifications to the distinct purposes of each model, balancing speed, range, and efficiency metrics while adhering to aviation specifications weight and operational limits.

Where can I find a Diamond DA40 for sale?

You can find a Diamond DA40 for sale on aircraft marketplaces like Controller.com and Trade-A-Plane.com, where listings detail used and new models with specifics on price, condition, and location. Controller.com lists Diamond DA40 aircraft with prices ranging from $189,900 to $699,050, reflecting both used and newer models. Trade-A-Plane.com features listings like a 2025 Diamond DA40 XLT in Raleigh, NC, enabling refined searches based on model and location. PremierAircraft.com presents Diamond Aircraft inventory, including detailed listings for DA40 NG models, showing year, registration, total time, condition, and prices. Aircraft brokers offer brokerage services, including negotiation support and assistance in verifying aircraft condition and history. Aviation auctions occasionally feature Diamond DA40 aircraft, requiring buyers to monitor auction platforms for offerings and bid opportunities.

Diamond Aircraft’s official website provides access to new DA40 models, directing buyers to authorized dealerships for purchasing details. Diamond aircraft dealership locations are accessible through the manufacturer’s website or headquarters referrals. Buyers seeking personalized assistance can obtain diamond aircraft dealers’ contact information for new or certified pre-owned aircraft purchases. Aircraft marketplace listings on platforms like Controller.com and Trade-A-Plane.com feature extensive options for the Diamond DA40, including advanced filters for price, model year, and location. Aircraft marketplaces search filters enable precise searches, helping buyers identify specific variants like the Diamond DA40 Star. Listings include detailed descriptions, photos, and specifications, guaranteeing transparency in the selection process.

Aircraft brokerage services offer comprehensive support, including negotiation and condition verification for Diamond DA40 transactions. Aircraft brokers negotiation support ensures fair pricing and favorable terms during purchases. Auction dates are announced in advance, allowing buyers to prepare for participation. Bidding details outline rules and deadlines for submitting bids on Diamond DA40 aircraft. Used aircraft listings pre-owned inventory provides insights into the condition, total time airframe (TTAF), and maintenance history of available models. Used aircraft listings and aircraft condition details assist buyers in evaluating the overall condition and value of the aircraft before finalizing a purchase.

What is the price of a Diamond DA40?

The price of a Diamond DA40 depends on factors like model year, condition, and location. Pre-owned Diamond DA40 CS models have an average price of $215,000, while newer Diamond DA40 NG models range from $375,000 to $551,250. Price ranges reflect configurations and market conditions for this aircraft.

The price range for used Diamond DA40 aircraft varies based on condition and model year. Older used models of the Diamond DA40 sell for $189,900, while pre-owned aircraft in average condition cost around $215,000. Newer used models, like low-time 2009 DA40 XLS variants, command prices near $300,000. The year of manufacture, engine specifications, and avionics options directly influence the price of used Diamond DA40 aircraft. Older 2000-2003 models sell for $160,000 to $200,000, reflecting their age and accumulated flight hours.

New Diamond DA40 aircraft start at a base price of $375,000 for entry-level configurations. Mid-tier models without additional customizations fall around $500,000. Standard features and market demand contribute to these figures, providing competitive pricing within the light single-engine aircraft segment. Buyers seeking modern design and efficient performance contemplate the Diamond DA40 as a reliable option.

Higher-end pricing for new Diamond DA40 models includes the 2023 version, which lists at $551,250 before optional upgrades. Fully equipped variants with advanced avionics and customizations reach $688,000 or more. Optional add-ons, like boosted navigation systems and premium interior packages, increase the overall cost. The Diamond DA40 Star variant, equipped with a 168-HP Austro AE300 diesel engine, retailed for $380,000 in 2015, showcasing the impact of engine technology on pricing.
Top-of-the-line Diamond DA40 configurations achieve prices up to $699,050, reflecting advanced specifications and extensive customization. Premium features include state-of-the-art avionics, weather services integration, and optimized fuel efficiency from diesel engines. Advanced customization options cater to buyers prioritizing performance and cutting-edge technology. The Diamond DA40 remains a popular choice due to its modern design, efficient operation, and adaptability to various mission requirements.