Diamond DA42 Twin Star weight and balance & performance calculator
The Diamond DA42 Twin Star is a piston twin with 4 seats, retractable gear and piston engine (avgas or diesel/Jet A-1, depending on version). BriefingPal has 2 models of the Diamond DA42 Twin Star on file – DA42 L360 (Lycoming) and Diamond DA42 NG – with data from the Pilot's Operating Handbook for weight and balance, takeoff and landing distances, climb and cruise. Free, no sign-up.
* Diamond DA42 NG, MTOW, sea level / 6,500 ft, ISA – details below
Diamond DA42 Twin Star weight and balance and performance calculator
Your own empty mass (weighing report, optional)
The POH has no standard empty moment for this model – enter the empty mass CG from your weighing report to get the CG.
Leave empty to use the typical POH empty mass. Your aircraft's weighing report is what counts.
Calculated on the BriefingPal server from the POH data. Nothing is stored, no cookie. Planning aid only – the POH/AFM and your weighing report are authoritative.
Diamond DA42 Twin Star weight and balance calculator per model
Diamond DA42 Twin Star key figures by model
| Model | Built | MTOW | Empty mass¹ | Usable fuel | Max. baggage | Useful load with full fuel¹ |
|---|---|---|---|---|---|---|
| DA42 L360 (Lycoming) | 2007–2012 | 1,785 kg (3,935 lb) | 1,250 kg (2,756 lb) | 50 US gal (189 L) | 66 kg (146 lb) | 399 kg (879 lb) |
| Diamond DA42 NG | 2009–today | 1,999 kg (4,407 lb) | 1,450 kg (3,197 lb) | 50 US gal (189 L) | 45 kg (99 lb) | 397 kg (875 lb) |
¹ Typical empty mass from the POH sample loading; your aircraft's current weighing report applies. Useful load = MTOW − empty mass − usable fuel (people, baggage, oil if not included).
Diamond DA42 Twin Star takeoff and landing distance
BriefingPal result at MTOW, sea level, 15 °C, no wind, dry paved runway, normal takeoff and landing per POH with the app's default flap setting, without safety factor:
| Model | Takeoff ground roll | Takeoff over 50 ft | Landing over 50 ft | Landing ground roll |
|---|---|---|---|---|
| DA42 L360 (Lycoming) | 485 m (1,590 ft) | 745 m (2,450 ft) | 735 m (2,410 ft) | 370 m (1,210 ft) |
| Diamond DA42 NG | 545 m (1,790 ft) | 870 m (2,850 ft) | 650 m (2,130 ft) | 390 m (1,280 ft) |
Hot and high: at 5,000 ft and 25 °C (density altitude about 7,300 ft) the Diamond DA42 NG needs about 1,435 m (4,700 ft) to clear 50 ft – 65 % more than at sea level. Calculate density altitude →
In BriefingPal you enter your actual weight, airfield, temperature and wind. The app reads the POH charts for these conditions, compares the result with TORA/LDA of the selected runway and can add a 1.15 safety factor.
Diamond DA42 Twin Star climb and cruise performance
| Model | Rate of climb at sea level | Time / fuel to 6,500 ft | Cruise TAS at 6,500 ft | Fuel flow |
|---|---|---|---|---|
| DA42 L360 (Lycoming) | 1,120 fpm | 6 min / 2.5 US gal | 152 kt | 19.6 US gal/h (74 L/h) |
| Diamond DA42 NG | 980 fpm | 7 min / 1.9 US gal | 109 kt | 8.1 US gal/h (31 L/h) |
MTOW, ISA, default power setting of the POH cruise table. Values change with weight, temperature and the power you choose in the app.
Diamond DA42 Twin Star weight and balance in BriefingPal
Loading stations: baggage area 1, seat row 1, seat row 2, baggage area 2, baggage area 3, combined baggage limit, fuel. Maximum baggage: 45–66 kg. Demonstrated crosswind: 25 kt. Best rate of climb speed Vy: 92 KIAS. Service ceiling: 18,000 ft. Fuel: AVGAS or Jet A-1 depending on the model.
Crosswind calculator with the demonstrated crosswind of the Diamond DA42 Twin Star →
How to calculate Diamond DA42 Twin Star weight and balance
- Choose the Diamond DA42 Twin StarType the registration or pick Diamond → Diamond DA42 Twin Star → your model. Stored weighing data of the registration are used automatically.
- Enter people, baggage and fuelWeights in kg or lb, fuel in US gallons or litres. MTOW and every station limit are checked instantly.
- Check the CG envelopeTakeoff, zero-fuel and landing points are drawn into the Diamond DA42 Twin Star envelope from the POH.
- Add airfields and routeTakeoff and landing distances, climb, cruise and fuel follow from the same weight – then print the briefing PDF.
Diamond DA42 Twin Star – frequently asked questions
What is the maximum takeoff weight (MTOW) of the Diamond DA42 Twin Star?
Depending on the model, DA42 L360 (Lycoming): 1,785 kg (3,935 lb); Diamond DA42 NG: 1,999 kg (4,407 lb).
How much usable fuel does the Diamond DA42 Twin Star carry?
Usable fuel per POH: DA42 L360 (Lycoming): 50 US gal (189 L); Diamond DA42 NG: 50 US gal (189 L).
What is the useful load of the Diamond DA42 Twin Star with full fuel?
With the typical POH empty mass and full usable fuel: DA42 L360 (Lycoming): 399 kg (879 lb); Diamond DA42 NG: 397 kg (875 lb). Your aircraft's real empty mass is in its weighing report – BriefingPal can store it per registration.
How long is the Diamond DA42 Twin Star takeoff distance?
Diamond DA42 NG at MTOW, sea level, 15 °C, no wind: ground roll about 545 m (1,790 ft), over 50 ft about 870 m (2,850 ft). At 5,000 ft and 25 °C it grows to about 1,435 m (4,700 ft). Always check the POH for your exact conditions.
Is there a free Diamond DA42 Twin Star weight and balance calculator?
Yes. BriefingPal is free and needs no account. It covers 2 models of the Diamond DA42 Twin Star, draws the CG envelope from the POH and also computes takeoff and landing distances, climb, cruise and fuel – with a briefing PDF.
Data source
All figures come from the manufacturer's Pilot's Operating Handbook / Airplane Flight Manual of each model (weight and balance section and performance section) and are computed with the BriefingPal engine. BriefingPal is a planning aid; the original POH/AFM of your aircraft and its weighing report remain authoritative.
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