Piper PA-34 Seneca weight and balance & performance calculator
The Piper PA-34 Seneca is a piston twin with 6 seats, retractable gear and piston engine. BriefingPal has 4 models of the Piper PA-34 Seneca on file – PA-34-200T Seneca II, PA-34-220T Seneca III, PA-34-220T Seneca V and PA-34-200 Seneca I – with data from the Pilot's Operating Handbook for weight and balance, takeoff and landing distances, climb and cruise. Free, no sign-up.
* PA-34-220T Seneca V, MTOW, sea level / 6,500 ft, ISA – details below
Piper PA-34 Seneca 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.
Piper PA-34 Seneca weight and balance calculator per model
Piper PA-34 Seneca key figures by model
| Model | Built | MTOW | Empty mass¹ | Usable fuel | Max. baggage | Useful load with full fuel¹ |
|---|---|---|---|---|---|---|
| PA-34-200T Seneca II | 1975–1980 | 2,073 kg (4,570 lb) | 1,266 kg (2,790 lb) | 93 US gal (352 L) | 45 kg (100 lb) | 554 kg (1,222 lb) |
| PA-34-220T Seneca III | 1981–1990 | 1,999 kg (4,407 lb) | 1,457 kg (3,212 lb) | 93 US gal (352 L) | 45 kg (100 lb) | 289 kg (637 lb) |
| PA-34-220T Seneca V | 1997–today | 2,155 kg (4,750 lb) | 1,625 kg (3,583 lb) | 122 US gal (462 L) | 45 kg (100 lb) | 198 kg (436 lb) |
| PA-34-200 Seneca I | 1972–1975 | 1,905 kg (4,200 lb) | 1,186 kg (2,615 lb) | 93 US gal (352 L) | 45 kg (100 lb) | 466 kg (1,027 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).
Piper PA-34 Seneca 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 |
|---|---|---|---|---|
| PA-34-200T Seneca II | 345 m (1,130 ft) | 445 m (1,460 ft) | 830 m (2,730 ft) | 445 m (1,450 ft) |
| PA-34-220T Seneca III | 435 m (1,430 ft) | 530 m (1,750 ft) | 815 m (2,670 ft) | 415 m (1,360 ft) |
| PA-34-220T Seneca V | 435 m (1,430 ft) | 600 m (1,960 ft) | 875 m (2,860 ft) | 450 m (1,480 ft) |
| PA-34-200 Seneca I | 310 m (1,010 ft) | 440 m (1,440 ft) | 415 m (1,370 ft) | 225 m (740 ft) |
Hot and high: at 5,000 ft and 25 °C (density altitude about 7,300 ft) the PA-34-220T Seneca V needs about 865 m (2,840 ft) to clear 50 ft – 45 % 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.
Piper PA-34 Seneca 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 |
|---|---|---|---|---|
| PA-34-200T Seneca II | 1,340 fpm | 5 min / 1.9 US gal | 149 kt | 20.5 US gal/h (78 L/h) |
| PA-34-220T Seneca III | 1,390 fpm | 5 min / 2.3 US gal | 165 kt | 23.3 US gal/h (88 L/h) |
| PA-34-220T Seneca V | 1,460 fpm | 5 min / 2.5 US gal | 157 kt | 22.0 US gal/h (83 L/h) |
| PA-34-200 Seneca I | 1,350 fpm | 6 min / 1.1 US gal | 155 kt | 18.3 US gal/h (69 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.
Piper PA-34 Seneca weight and balance in BriefingPal
Loading stations: seat row 1, seat row 2, seat row 3, baggage area 1, baggage area 2, fuel. Maximum baggage: 45 kg (100 lb). Maximum landing mass 1,814 kg (4,000 lb) (PA-34-200 Seneca I) – BriefingPal checks the landing point after trip fuel against it. Demonstrated crosswind: 17 kt. Best rate of climb speed Vy: 88 KIAS. Service ceiling: 25,000 ft. Fuel: AVGAS.
Crosswind calculator with the demonstrated crosswind of the Piper PA-34 Seneca →
How to calculate Piper PA-34 Seneca weight and balance
- Choose the Piper PA-34 SenecaType the registration or pick Piper → Piper PA-34 Seneca → 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 Piper PA-34 Seneca 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.
Piper PA-34 Seneca – frequently asked questions
What is the maximum takeoff weight (MTOW) of the Piper PA-34 Seneca?
Depending on the model, PA-34-200T Seneca II: 2,073 kg (4,570 lb); PA-34-220T Seneca III: 1,999 kg (4,407 lb); PA-34-220T Seneca V: 2,155 kg (4,750 lb); PA-34-200 Seneca I: 1,905 kg (4,200 lb).
How much usable fuel does the Piper PA-34 Seneca carry?
Usable fuel per POH: PA-34-200T Seneca II: 93 US gal (352 L); PA-34-220T Seneca III: 93 US gal (352 L); PA-34-220T Seneca V: 122 US gal (462 L); PA-34-200 Seneca I: 93 US gal (352 L).
What is the useful load of the Piper PA-34 Seneca with full fuel?
With the typical POH empty mass and full usable fuel: PA-34-200T Seneca II: 554 kg (1,222 lb); PA-34-220T Seneca III: 289 kg (637 lb); PA-34-220T Seneca V: 198 kg (436 lb); PA-34-200 Seneca I: 466 kg (1,027 lb). Your aircraft's real empty mass is in its weighing report – BriefingPal can store it per registration.
How long is the Piper PA-34 Seneca takeoff distance?
PA-34-220T Seneca V at MTOW, sea level, 15 °C, no wind: ground roll about 435 m (1,430 ft), over 50 ft about 600 m (1,960 ft). At 5,000 ft and 25 °C it grows to about 865 m (2,840 ft). Always check the POH for your exact conditions.
Is there a free Piper PA-34 Seneca weight and balance calculator?
Yes. BriefingPal is free and needs no account. It covers 4 models of the Piper PA-34 Seneca, 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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