American Champion 7ECA weight and balance and performance calculator
Calculate the weight and balance of the American Champion 7ECA online: enter people, baggage and fuel and get the takeoff mass, the CG and whether both are within the limits of the POH – plus the takeoff and landing distance for your airfield, temperature and wind. Free, no sign-up. The American Champion 7ECA is a model of the Citabria 7ECA/7GCAA/7GCBC; built 1965–1980.
* MTOW, sea level, 15 °C, no wind – BriefingPal result from the POH data
Calculate the American Champion 7ECA weight, CG and takeoff distance
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.
American Champion 7ECA key figures
| Maximum takeoff mass (MTOW) | 748 kg (1,650 lb) |
|---|---|
| Typical empty mass (POH sample) | 523 kg (1,153 lb) |
| Usable fuel | 35 US gal (132 L) |
| Total fuel capacity | 36 US gal (136 L) |
| Fuel type | AVGAS |
| Useful load with full fuel | 130 kg (287 lb) |
| Maximum baggage | 45 kg (100 lb) |
| Demonstrated crosswind | 15 kt |
| Best rate of climb speed Vy | 60 KIAS |
| Built | 1965–1980 |
| Loading stations | front seats, rear seats, baggage compartment, fuel |
Empty mass and useful load depend on your aircraft – its weighing report applies.
American Champion 7ECA takeoff and landing distance
BriefingPal result from the POH charts at MTOW, no wind, dry paved runway, normal procedure, default flap setting, without safety factor. Use the calculator above for your mass, airfield, temperature and wind.
| Conditions | Takeoff ground roll | Takeoff over 50 ft | Landing over 50 ft | Landing ground roll |
|---|---|---|---|---|
| Sea level, 15 °C | 140 m (450 ft) | 270 m (890 ft) | 235 m (780 ft) | 120 m (400 ft) |
| 5,000 ft, 25 °C (density altitude ≈ 7,300 ft) | 235 m (760 ft) | 495 m (1,630 ft) | – | – |
Hot and high, the American Champion 7ECA needs about 82 % more distance to clear 50 ft than at sea level. Calculate density altitude →
American Champion 7ECA climb and cruise
| Rate of climb at sea level | Time / fuel to 6,500 ft | Cruise TAS at 6,500 ft | Fuel flow |
|---|---|---|---|
| 730 fpm | 12 min / 2.3 US gal | 90 kt | 4.4 US gal/h (17 L/h) |
MTOW, ISA, default power setting of the POH cruise table (≈49 % power).
How to do the American Champion 7ECA weight and balance
- Enter the loadingWeights of pilot, passengers and baggage per station, fuel in litres or US gallons. Each station limit and the MTOW are checked.
- Use your own empty massOptional: enter empty mass and empty CG from the weighing report of your American Champion 7ECA. Without it the typical POH empty mass is used.
- Check CG and massThe traffic light shows whether the takeoff mass and the CG with and without fuel lie within the envelope of the POH.
- Takeoff and landingElevation, QNH, temperature, wind and runway give the takeoff and landing distance – compared with the runway length if you enter it.
American Champion 7ECA compared with the other Citabria 7ECA/7GCAA/7GCBC models
| Model | MTOW | Usable fuel | Takeoff over 50 ft* | Cruise TAS* |
|---|---|---|---|---|
| American Champion 7ECA | 748 kg | 35 US gal | 270 m | 90 kt |
| American Champion 7GCBC | 816 kg | 35 US gal | 170 m | 109 kt |
* MTOW, sea level, 15 °C / 6,500 ft, ISA – BriefingPal result from the POH data.
American Champion 7ECA – frequently asked questions
What is the MTOW of the American Champion 7ECA?
The maximum takeoff mass of the American Champion 7ECA is 748 kg (1,650 lb) according to the POH.
How much usable fuel does the American Champion 7ECA carry?
35 US gal (132 L) usable (total capacity 36 US gal (136 L)). With the typical POH empty mass and full fuel, about 130 kg (287 lb) remain for people and baggage.
How long is the takeoff distance of the American Champion 7ECA?
At MTOW, sea level, 15 °C and no wind the ground roll is about 140 m (450 ft) and the distance over 50 ft about 270 m (890 ft). At 5,000 ft and 25 °C it grows to about 495 m (1,630 ft). The calculator above gives the value for your conditions.
How do I calculate the CG of the American Champion 7ECA?
Multiply each mass by its arm, add up the moments and divide by the total mass – the calculator above does this with the stations of the American Champion 7ECA POH (front seats, rear seats, baggage compartment, fuel) and checks the CG against the envelope.
How does the American Champion 7ECA differ from other Citabria 7ECA/7GCAA/7GCBC models?
BriefingPal has 2 Citabria 7ECA/7GCAA/7GCBC models on file. Compared with them the American Champion 7ECA has the lowest MTOW (748 kg (1,650 lb)), 35 US gal (132 L) usable fuel and a takeoff distance over 50 ft of 270 m (890 ft) at MTOW.
Is the American Champion 7ECA weight and balance calculator free?
Yes. The calculator on this page and the BriefingPal app are free and need no account. The app adds route planning, weather, NOTAM, fuel planning and a briefing PDF.
Data source
All figures come from the Pilot's Operating Handbook / Airplane Flight Manual of the American Champion 7ECA (weight and balance and performance sections) and are computed with the BriefingPal engine – the same calculation as in the app. Planning aid only; the original POH/AFM and the weighing report of your aircraft remain authoritative.
Other Citabria 7ECA/7GCAA/7GCBC models
Calculators
Open the American Champion 7ECA calculator
free · no sign-up · POH data