PA-30 Twin Comanche 101: A Pro Pilot’s Guide to Mastering the Twin

Good morning and welcome to the Daily Preflight, I'm Jeff Ger'ernser.

The Piper PA-30 Twin Comanche is often referred to as the "sports car" of the light twin world. For career-minded aviators, it is more than just a sleek airframe; it is one of the most efficient multi-engine trainers and time-builders ever produced. However, its efficiency comes with specific handling characteristics that require a disciplined approach.

If you are stepping into the PA-30 for your multi-engine rating or building hours for the airlines, you need to master its systems and aerodynamic quirks. This guide breaks down the essential technical knowledge required to operate the "TwinCo" with professional precision.

The Powerplant: Lycoming Efficiency

The heart of the PA-30 consists of two Lycoming IO-320-B1A engines. These are four-cylinder, fuel-injected engines producing 160 horsepower each. Combined, you have 320 hp at your disposal in a relatively lightweight airframe.

Key Engine Specs:

• Engine Model: Lycoming IO-320-B1A

• Horsepower: 160 hp per side

• TBO: 2,000 hours

• Fuel Injection: Precise fuel delivery, reducing the risk of carburetor ice but requiring specific hot-start procedures.

The PA-30 utilizes Hartzell two-blade, constant-speed, full-feathering propellers. Understanding multi-engine propeller systems is vital here. In the event of an engine failure, the ability to feather the prop is the difference between maintaining a climb and a rapid descent. The propellers use nitrogen pressure and a large spring to move the blades toward the feathered position, while oil pressure moves them toward a fine pitch (high RPM).

Knowing Your Numbers: V-Speeds and Performance

In multi-engine flying, numbers aren't just suggestions: they are survival tools. The Twin Comanche has a reputation for being "honest" but demanding.

Critical V-Speeds for the PA-30:

• Vmc (Minimum Controllable Airspeed): 80 MPH (or 70-75 kts depending on the model/modifications).

• Vsse (Intentional One-Engine Inoperative Speed): 97 MPH.

• Vy (Best Rate of Climb): 112 MPH.

• Vyse (Best Rate of Climb Single-Engine): 105 MPH (The "Blue Line").

• Vx (Best Angle of Climb): 90 MPH.

• Vlo/Vle (Gear Operation/Extended): 150 MPH.

At sea level, the Twin Comanche boasts a best rate of climb of 1,460 fpm. However, the single-engine performance is the metric that defines your safety margin. With one engine caged, your climb rate drops to approximately 260 fpm under ideal conditions.

Fuel Management: The Four-Tank Shuffle

Fuel management in the PA-30 is more complex than in many modern trainers. The standard configuration includes four tanks: two mains (30 gallons each) and two auxiliaries (15 gallons each).

• Total Usable Fuel: 86 gallons (standard).

• Fuel Flow: Approximately 16–18 GPH total at 65-75% power.

Many PA-30s are equipped with 15-gallon tip tanks, bringing total usable fuel to 116–120 gallons. This allows for incredible endurance: often over 6 hours: but it adds complexity to weight and balance.

Pro Tip: Always take off and land on the main tanks. The auxiliary tanks should only be used in level cruise. Furthermore, you must understand the multi-engine fuel x-feed systems to balance the load or utilize all available fuel during an engine-out scenario.

Single-Engine Aerodynamics and Vmc

The PA-30 does not have counter-rotating propellers (unless it is the "C" model PA-39). This means the left engine is the critical engine. If the left engine fails, the aerodynamic effects of P-factor, accelerated slipstream, spiraling slipstream, and torque are more pronounced, making the aircraft harder to control than if the right engine had failed.

The 5,800-Foot Reality

The single-engine service ceiling of a standard PA-30 is 5,800 feet. If you are flying over high terrain and lose an engine, you are essentially flying a glider until you descend to that altitude. This is why thorough pre-flight planning regarding the multi-engine service ceiling is non-negotiable for professional pilots.

When practicing engine-out procedures, emphasize the zero side slip technique. By banking 2 to 5 degrees into the operative engine and "splitting the brick" on the turn coordinator, you minimize drag and maximize the limited performance available.

Landing the Twin Comanche: Avoiding the "Comanche Skip"

The PA-30 features a laminar flow wing. It is efficient in cruise but lacks the high-lift characteristics of the "Hershey Bar" wings found on older Cherokees. This makes the aircraft prone to "floating" if you are even 5 knots too fast on final.

Landing Best Practices:

1. Speed Control: Nail your approach speed. 90-95 MPH on short final is standard.

2. Pitch Attitude: The PA-30 sits low to the ground. Pilots transitioning from high-wing aircraft often flare too high, resulting in a dropped wing or a bounce.

3. The Bounce: If you bounce a Twin Comanche, go around. The landing gear is robust, but the airframe's geometry can lead to a pilot-induced oscillation (PIO) if you try to salvage a bad landing.

Checkride Readiness: What Examiners Look For

If you are using the PA-30 for a Commercial Multi-Engine Add-On, the DPE (Designated Pilot Examiner) will focus heavily on your systems knowledge and your ability to maintain control during simulated emergencies.

• Vmc Demonstration: You must recognize the first sign of loss of directional control or a stall and recover immediately.

• Emergency Procedures: Memory items must be executed without hesitation. "Mix, Prop, Throttle, Flaps, Gear, Identify, Verify, Feather."

• Situational Awareness: Can you manage the multi-engine combustion heater and the cowl flaps while dealing with a simulated engine failure?

Success in the PA-30 comes down to being ahead of the airplane. Because it is faster than a Cessna 150 or a Piper Archer, your mental processing must accelerate.

Why the PA-30 for Career Building?

For those looking to build the 1,500 hours required for the ATP, the Twin Comanche is a gift. Its fuel burn is nearly identical to a high-performance single-engine aircraft, yet it provides the multi-engine time insurance companies and airlines demand. Mastering this aircraft shows you can handle complex fuel systems, retractable gear, and the nuances of non-counter-rotating engines.

It is a true pilot's airplane. It rewards smoothness and punishes sloppiness. If you can fly a PA-30 well, you can fly almost any light twin with confidence.

First Things First: Preparation

Before you even step into the cockpit, spend time with the Pilot’s Operating Handbook (POH). Understand the weight and balance envelopes, especially how the CG moves as fuel is burned from different tanks.

If you're serious about mastering the twin, check out our multi-engine training series for a deeper dive into the physics and procedures that will make your checkride a non-event.

Thanks for joining me today on the Daily Pre Flight. Have a great day, and fly safe.