Weight and balance data
- Type certificate data sheet (TCDS)
- TCDS# A18SO Revision 5 (FAA)
- Manufacturer
- Piper Aircraft, Inc.
- Engines
- 1x Lycoming O-235-L2C (112 HP)
- Maximum takeoff weight
- 1,670 lbs (757 kg)
- Reference empty weight
- 1,169 lbs (530 kg)
- Empty weight arm
- 73.2"
- CG limits
- 72.4" to 78.5" aft of datum
Loading stations and arms
| Station | Arm (in) | Maximum (lbs) |
|---|---|---|
| Pilot | 85.5 | — |
| Front passenger | 85.5 | — |
| Baggage | 115.0 | 100 |
| Fuel | 75.4 | 180 |
CG envelope points
Envelope polygon vertices (arm in inches aft of datum, weight in pounds).
| Point | Arm (in) | Weight (lbs) |
|---|---|---|
| 1 | 72.4 | 1,100 |
| 2 | 72.4 | 1,277 |
| 3 | 73.5 | 1,670 |
| 4 | 78.5 | 1,670 |
| 5 | 78.5 | 1,100 |
Data reliability and sources
Reliability:partially verified · Last verified: 2026-10-14
Sources:
- FAA TCDS A18SO Rev. 5 (copia archivada de rgl.faa.gov): http://web.archive.org/web/20210309185125id_/https://rgl.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/5b754021f0c8564086257212006c3447/$FILE/A18SO.pdf
- Piper PA-38-112 Tomahawk POH, Report VB-2126 (rev. 2 May 2012, copia de aeroclub), Secciones 1, 2 y 6: https://www.aeroclubvitoria.net/utilidades/ECFRE%20POH-2012.pdf
Pending verification:
- Peso vacío y brazo de la aeronave individual (obligatorio: W&B Report propio)
- Posición de asiento: se usa 85.5" (4.ª muesca); otras muescas van de 80.8" a 89.5"
- Sin equipaje para barrenas (POH 2.11): no validado automáticamente
- Revisión vigente del TCDS A18SO (la copia consultada es Rev. 5, 2006)
Empty weight and arm differ for every airframe: use the values from your aircraft's weight and balance report (you can add them as a custom aircraft in the calculator).
Frequently asked questions
How is the Piper PA-38-112 Tomahawk weight and balance calculated?
Multiply each station's weight by its arm to get its moment, add up weights and moments (including the empty weight) and divide the total moment by the total weight to get the CG. The Piper PA-38-112 Tomahawk is within limits when the weight does not exceed the maximum and the weight/CG point lies inside the envelope.
What is the maximum weight of the Piper PA-38-112 Tomahawk?
The reference maximum takeoff weight of the Piper PA-38-112 Tomahawk is 1,670 lbs (757 kg), per TCDS# A18SO Revision 5 (FAA). Always confirm it in your aircraft's POH/AFM.
What are the CG limits of the Piper PA-38-112 Tomahawk?
The Piper PA-38-112 Tomahawk CG must be between 72.4" (forward limit) and 78.5" (aft limit) aft of datum. The effective limit depends on weight: the envelope on this page shows its full shape.
Can I use this calculator for my Piper PA-38-112 Tomahawk?
Yes, as a reference. Every Piper PA-38-112 Tomahawk has its own empty weight and arm depending on its equipment: enter them from its weight and balance report as a custom aircraft. The POH/AFM is always the official reference.