Piper PA-34-220T Seneca III weight and balance and performance calculator
Calculate the weight and balance of the Piper PA-34-220T Seneca III 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 Piper PA-34-220T Seneca III is a model of the Piper PA-34 Seneca; built 1981–1990.
* MTOW, sea level, 15 °C, no wind – BriefingPal result from the POH data
Calculate the Piper PA-34-220T Seneca III 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.
Piper PA-34-220T Seneca III key figures
| Maximum takeoff mass (MTOW) | 1,999 kg (4,407 lb) |
|---|---|
| Typical empty mass (POH sample) | 1,457 kg (3,212 lb) |
| Usable fuel | 93 US gal (352 L) |
| Total fuel capacity | 98 US gal (371 L) |
| Fuel type | AVGAS |
| Useful load with full fuel | 289 kg (637 lb) |
| Maximum baggage | 45 kg (100 lb) |
| Demonstrated crosswind | 17 kt |
| Best rate of climb speed Vy | 92 KIAS |
| Service ceiling | 25,000 ft |
| Built | 1981–1990 |
| Loading stations | 4 seat rows, baggage area 1, baggage area 2, fuel |
Empty mass and useful load depend on your aircraft – its weighing report applies.
Piper PA-34-220T Seneca III 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 | 435 m (1,430 ft) | 530 m (1,750 ft) | 815 m (2,670 ft) | 415 m (1,360 ft) |
| 5,000 ft, 25 °C (density altitude ≈ 7,300 ft) | 640 m (2,100 ft) | 760 m (2,500 ft) | – | – |
Hot and high, the Piper PA-34-220T Seneca III needs about 43 % more distance to clear 50 ft than at sea level. Calculate density altitude →
Piper PA-34-220T Seneca III climb and cruise
| Rate of climb at sea level | Time / fuel to 6,500 ft | Cruise TAS at 6,500 ft | Fuel flow |
|---|---|---|---|
| 1,390 fpm | 5 min / 2.3 US gal | 165 kt | 23.3 US gal/h (88 L/h) |
MTOW, ISA, default power setting of the POH cruise table.
How to do the Piper PA-34-220T Seneca III 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 Piper PA-34-220T Seneca III. 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.
Piper PA-34-220T Seneca III compared with the other Piper PA-34 Seneca models
| Model | MTOW | Usable fuel | Takeoff over 50 ft* | Cruise TAS* |
|---|---|---|---|---|
| Piper PA-34-200T Seneca II | 2,073 kg | 93 US gal | 445 m | 149 kt |
| Piper PA-34-220T Seneca III | 1,999 kg | 93 US gal | 530 m | 165 kt |
| Piper PA-34-220T Seneca V | 2,155 kg | 122 US gal | 600 m | 157 kt |
| Piper PA-34-200 Seneca I | 1,905 kg | 93 US gal | 440 m | 155 kt |
* MTOW, sea level, 15 °C / 6,500 ft, ISA – BriefingPal result from the POH data.
Piper PA-34-220T Seneca III – frequently asked questions
What is the MTOW of the Piper PA-34-220T Seneca III?
The maximum takeoff mass of the Piper PA-34-220T Seneca III is 1,999 kg (4,407 lb) according to the POH.
How much usable fuel does the Piper PA-34-220T Seneca III carry?
93 US gal (352 L) usable (total capacity 98 US gal (371 L)). With the typical POH empty mass and full fuel, about 289 kg (637 lb) remain for people and baggage.
How long is the takeoff distance of the Piper PA-34-220T Seneca III?
At MTOW, sea level, 15 °C and no wind the ground roll is about 435 m (1,430 ft) and the distance over 50 ft about 530 m (1,750 ft). At 5,000 ft and 25 °C it grows to about 760 m (2,500 ft). The calculator above gives the value for your conditions.
How do I calculate the CG of the Piper PA-34-220T Seneca III?
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 Piper PA-34-220T Seneca III POH (4 seat rows, baggage area 1, baggage area 2, fuel) and checks the CG against the envelope.
How does the Piper PA-34-220T Seneca III differ from other Piper PA-34 Seneca models?
BriefingPal has 4 Piper PA-34 Seneca models on file. Compared with them the Piper PA-34-220T Seneca III has an MTOW of 1,999 kg (4,407 lb) (range 1,905–2,155 kg), 93 US gal (352 L) usable fuel and a takeoff distance over 50 ft of 530 m (1,750 ft) at MTOW.
Is the Piper PA-34-220T Seneca III 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 Piper PA-34-220T Seneca III (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.
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Calculators
Open the Piper PA-34-220T Seneca III calculator
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