How to Avoid the Biggest Multi-Engine Add-On Checkride Pitfalls

Success in a multi-engine add-on checkride isn't just about handling an engine failure; it’s about demonstrating total command of a more complex aircraft under pressure. As we wrap up Multi-Engine Mastery Week, we are focusing on the final hurdle: the checkride.

The transition from a single-engine aircraft to a twin like the PA-30 Twin Comanche requires a shift in mindset. You are no longer just managing a throttle; you are managing asymmetric thrust, complex systems, and higher speeds. Most checkride failures don’t happen because the pilot doesn't know how to fly; they happen because the pilot loses situational awareness or rushes critical procedures.

Here is how to navigate the biggest pitfalls and secure your multi-engine rating.

1. Rushing the "Identify and Verify" Process

The most common: and potentially dangerous: mistake during an engine-out scenario is acting on impulse rather than method. In the heat of a simulated failure, adrenaline spikes. Pilots often reach for a lever before they have truly processed which engine has failed.

The Pitfall: Moving the wrong prop lever or, worse, shutting down the operating engine. This is an automatic disqualification and a serious safety risk in the real world.

The Fix: Use the "Dead Foot, Dead Engine" Technique.

1. Identify: If the aircraft yaws left, your right foot will be working hard, and your left foot will be "dead." Therefore, the left engine is the suspected failed engine.
2. Verify: Retard the throttle of the suspected engine. If there is no change in performance or yaw, you have verified the correct engine.
3. Communicate: Verbally state your actions to the Designated Pilot Examiner (DPE). "I have a dead left foot. I am identifying the left engine as failed. I am verifying by pulling the left throttle. There is no change in performance."

Only after this verbal and physical verification should you move to the feathering and securing checklist.

2. Losing Control of the "Blue Line" (Vyse)

In a multi-engine aircraft, Vyse (the Best Rate of Climb Speed with one engine inoperative) is your lifeline. On your airspeed indicator, this is marked by the blue line.

The Pitfall: Allowing the airspeed to decay below Vyse during a single-engine climb or maneuver. Without both engines, your performance margin is razor-thin. If you let the nose get too high or fail to pitch for the blue line immediately, you will lose altitude and control.

The Fix: Pitch First, Clean Second.
The moment an engine fails, your priorities are:

• Directional Control: Use rudder to stop the yaw.
• Airspeed: Pitch for Vyse.
• Power: Mixtures, props, and throttles full forward (or as required).
• Drag: Flaps and gear up.

Memorize these steps until they are muscle memory. If you are training in a high-performance twin, check out our Multi-Engine Training Series to master these flows before you ever step into the cockpit with an examiner.

3. The "Head-Down" Syndrome

Modern multi-engine trainers are often equipped with advanced avionics, and the checklists for engine failures are significantly longer than those for a Cessna 172.

The Pitfall: Becoming so engrossed in the checklist or the G1000 that you stop flying the airplane. DPEs frequently see candidates drift 20 degrees off heading or lose 200 feet of altitude while they are looking down at a piece of paper.

The Fix: Aviate, Navigate, Communicate.
Fly the airplane first. Ensure you have stabilized the aircraft at Vyse and maintained directional control before you even touch a checklist. Use "Flows" for immediate actions and use the checklist only to verify that the flow was completed. Always keep your eyes outside the cockpit as much as possible, especially during the climb-out phase.

4. Weak V-Speed Knowledge and System Mastery

The oral portion of the multi-engine checkride is where many candidates stumble before they even start the engines. You must have a "mastery" level understanding of V-speeds and aircraft systems.

The Pitfall: Stuttering through definitions of Vmc or failing to explain why a "critical engine" exists on certain twins. If you cannot explain the forces acting on an aircraft during asymmetric thrust, the examiner will doubt your ability to handle the plane safely.

Key Speeds to Memorize:

• Vmc: Minimum Control Speed.
• Vyse: Best Rate of Climb (Single Engine).
• Vsse: Intentional One-Engine Inoperative Speed.
• Va: Maneuvering Speed (Essential for understanding structural limits, see Va course details).

The Fix: The "Explain it to a Student" Test.
Don’t just memorize the numbers. Be able to explain what happens to Vmc if the Center of Gravity (CG) moves aft or if the density altitude increases. Understanding the why behind the numbers shows the DPE that you are a professional pilot, not just a test-taker.

5. Procedural Mistakes: Gear and ATIS

It sounds simple, but some of the most common reasons for a "Notice of Disapproval" are the most basic flying errors.

The Pitfall: Forgetting the Landing Gear.
In a multi-engine add-on, you are likely moving from a fixed-gear single to a retractable twin. During simulated emergencies or go-arounds, pilots frequently forget to cycle the gear. Another common error is failing to stay ahead of the aircraft by not getting the ATIS or failing to complete the before-landing checklist.

The Fix: Stabilized Approaches and Verbal Callouts.
Adopt a strict "GUMP" check (Gas, Undercarriage, Mixture, Prop) at several points in the pattern. Make it a habit to call out "Gear down, three green" out loud. Even if you are flying solo, verbalizing these checks builds the habit that will save you on checkride day.

6. Disorganized Paperwork and Professionalism

The checkride starts the moment you meet the examiner.

The Pitfall: Arriving with incomplete logbooks, missing endorsements, or an unairworthy aircraft. If the DPE has to spend two hours fixing your paperwork, they are already entering the cockpit with a negative impression of your attention to detail.

The Fix: The Pre-Checkride Audit.

• Endorsements: Ensure you have the specific 14 CFR 61.63(c) or 61.63(b) endorsements required for an add-on.
• Maintenance Logs: Verify the aircraft has had its 100-hour/Annual inspection, Pitot-Static check, and Transponder certification.
• Weight and Balance: Have a completed weight and balance sheet ready for the DPE's specific weight. (Refer to our Weight and Balance course for a refresher).

7. Not Flying to ACS Standards

The FAA Airman Certification Standards (ACS) are not "suggestions": they are the grading rubric.

The Pitfall: Practicing to "close enough." If the ACS says ±100 feet for an altitude or ±10 degrees for a heading during a maneuver, and you consistently practice at ±150 feet, you are setting yourself up for failure.

The Fix: Hold Yourself to a Higher Standard.
During your final few lessons at Ace Pilot Academy, ask your instructor to grade you strictly against the ACS. If you're struggling with a specific maneuver, like the Vmc Demo or a Drag Demo, don't move on until you can perform it within tolerances three times in a row.

Final Thoughts for Career-Focused Aviators

The multi-engine add-on is a pivotal moment in your career. It opens the door to regional airlines, corporate flight departments, and high-performance cross-country flying. The checkride is simply a formal demonstration that you are a safe, competent multi-engine PIC.

Avoid the pitfalls by:

1. Slowing down during emergencies.
2. Prioritizing the Blue Line above all else.
3. Mastering the "Why" behind V-speeds and systems.
4. Presenting a professional package of paperwork and performance.

You've put in the work this week during our Multi-Engine Mastery series. Now, take that knowledge, stay disciplined in the cockpit, and go earn that rating.

Ready to take the next step in your training? Explore our full range of aviation training programs and get on the fast track to the flight deck.

Fly safe, and we'll see you in the clouds.