Piper PA-24 Comanche side profile
Piper Aircraft  /  PA-24 Comanche

Certified Autopilot for the Piper PA-24 Comanche

The Trio Pro Pilot gives Comanche owners a certified two-axis autopilot built for real cross-country speed and range — reducing cruise workload on an airplane already built to cover ground fast.

2-AxisGPS tracking + altitude hold
STCFAA-approved, SA04230CH
14V/28VConfigured to your model
Any A&PNo factory-authorized shop required
Before You Decide

You bought a Comanche for speed and range. Is your panel keeping up with the miles?

The Piper PA-24 Comanche was built to go fast and go far, and owners tend to fly it that way. Whether it's a 180 used for efficient regional travel or a 250, 260, or 400 covering serious distance at speed, the Comanche is a real traveling airplane, not a pattern trainer. That mission — long legs, real cross-country transportation, retractable gear and a constant-speed prop to manage — is exactly where an autopilot changes the character of ownership.

A Comanche already asks more of the pilot than a fixed-gear trainer: gear cycles, prop and mixture management, and higher cruise speeds that compress decision time. None of that changes with an autopilot installed. What changes is the workload during the long, straight-and-level portion of the flight — the part where fatigue quietly accumulates before the approach and landing phase that actually demands full attention.

Flying regular long-distance trips where the Comanche's speed and range are the whole point
Managing retractable gear, constant-speed prop, and higher cruise speeds on every flight
Working toward or maintaining an instrument rating for weather flexibility on long trips
Modernizing the panel and looking for a certified autopilot path built for this airframe
Are your typical trips long enough that fatigue becomes a factor before you reach the destination?
Would reducing cruise workload give you more capacity for the gear, prop, and approach management the Comanche demands on arrival?
If you're working toward an instrument rating, would automation on cruise legs let you focus more on procedures?
When weather changes mid-trip, would having the airplane hold course and altitude give you more capacity to manage the decision?
Is your current panel built for the kind of flying you're actually doing in this airplane?

These questions matter because the Comanche was designed for real transportation. An autopilot that fits the panel simply lets the airframe do what it was built to do, with less fatigue on the pilot who's covering the miles.

The Comanche modernization question The Garmin GFC 500 has not been brought to the PA-24 Comanche. For owners who want a certified, coupled autopilot on this airframe, the Trio Pro Pilot is the certified two-axis path — not one option among several.
"The question I usually ask is simple: if this were my airplane and I could only make one major upgrade right now, which upgrade would produce the greatest improvement in capability, workload reduction, safety, and practical utility?" — Jeff Johnson  |  Instrument-rated pilot  |  N1595R, Trio Pro Pilot installed

For a Comanche owner flying real distance, that answer is almost always the autopilot. It's the single upgrade most likely to change how far and how often you're willing to fly the airplane.

Why this page has two paths If you already know the Trio Pro Pilot is the right fit for your Comanche, the product and ordering information is below. If you want to confirm your model and voltage configuration first, call Jeff directly.
Technical Reference

What the Installation Actually Involves

These are the facts that matter before a conversation with an installer. No invented numbers — just what is documented and verified.

Aircraft Coverage
PA-24-180, -250, -260, -400
Single-engine Comanche models
STC
SA04230CH
Held by The STC Group LLC
System Type
Two-axis (roll + pitch)
GPS track, altitude hold, VS climb/descent
Electrical
14V (-180/-250/-260) or 28V (-400)
Configured to your specific model at order
GPS Requirement
Compatible GPS output required
Works with Garmin, Aspen, uAvionix, Dynon, and legacy navigators
EFIS Required?
No
Runs on original vacuum instruments or modern EFIS
Who Can Install
Any A&P/IA
No factory-authorized installer required
Estimated Labor
~40 hours, plus or minus 5
Trio alone; more with added equipment. Ask your shop for a quote.
Kit Contents
Complete installation kit
Control head, servos, Comanche-specific brackets and harness, STC documentation, AFMS
Lead Time
Ships in 3 to 5 weeks
Direct from manufacturer

Equipment pricing and full ordering information at the product page. Questions about your specific configuration: call Jeff at 540-309-6427.

Common Questions

What Comanche Owners Ask Before Buying

The Trio Pro Pilot is approved for the PA-24-180, -250, -260, and -400 under STC SA04230CH. Call Jeff with your tail number and he'll confirm your exact configuration.
No. The GFC 500 has not been brought to the PA-24 Comanche. The Trio Pro Pilot is the certified two-axis autopilot path for this airframe.
Yes, indirectly. The autopilot handles course and altitude during cruise, freeing up attention for gear, prop, and speed management during descent and approach — where that workload actually matters.
Yes. The Trio Pro Pilot has built-in pitch and roll sensors and interfaces with Garmin, Aspen, uAvionix, Dynon, and legacy navigators, or runs on original vacuum instruments without an EFIS at all.
Support comes from three directions: Jeff directly by phone or email, The STC Group LLC as the STC holder and technical support source, and a 700+ member Trio Pro Pilot owner community. Documentation, wiring schematics, and the AML are in the Education & Support Center.
Next Steps

Two ways to move forward

Some Comanche owners are ready to order. Others want to confirm their model and voltage first. Both paths are straightforward.

Still planning

Talk through your aircraft first

Jeff can review your model, panel, and mission before making a recommendation. The consultation is free and there is no obligation.

Call Jeff — 540-309-6427
Ready to order

View pricing and order the kit

Complete product information, pricing, and ordering for the PA-24 Comanche installation kit, including everything that ships with the system.

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