What are the specific pilot-in-command (PIC) requirements to take the MEI checkride?

To be eligible for the Multi-Engine Instructor checkride, the FAA requires a pilot to have at least 15 hours of PIC time in a multi-engine airplane. It is important to note that a pilot cannot begin logging these specific PIC hours until they already hold a multi-engine rating on their commercial certificate. Many applicants find this challenging because they must first earn the multi-engine add-on before they can legally build the time required for the instructor rating.

Why is the Piper Seminole commonly used for multi-engine training if it lacks a "critical engine"?

The Piper Seminole features counter-rotating propellers, which means the engines rotate toward the fuselage, balancing out P-factor and torque and eliminating the traditional critical engine found in aircraft like the Beechcraft Baron. However, instructors use the Seminole as a safe, "tame" platform to simulate the hazards of engine failure. By using this aircraft, students can learn to manage asymmetric thrust and directional control in a more stable environment before transitioning to high-performance twins where an engine failure would have more adverse effects.

What is "Zero Side Slip" and why is it taught during engine-out procedures?

Zero Side Slip is a flight technique used during an engine failure to minimize drag and maximize aircraft performance. While a student might instinctively try to keep the turn coordinator ball centered, a centered ball during single-engine flight actually indicates the airplane is in a slight skid. To achieve Zero Side Slip, the pilot must bank the aircraft approximately two to five degrees into the operative engine and allow the ball to displace slightly toward the "good" engine, which aligns the fuselage with the relative wind.

How does the "Eighty Percent Performance Loss" rule apply to twin-engine aircraft?

The "Eighty Percent Performance Loss" rule highlights a common misconception that losing one of two engines results in a 50 percent loss of performance. In reality, while 50 percent of the available power is lost, the resulting drag from the windmilling propeller and the necessary rudder deflection causes a performance drop of roughly 80 percent. This significantly reduces the single-engine climb rate and can even result in a single-engine service ceiling that is lower than the aircraft's current altitude.

What is the "Anti-Feathering Pin" logic in a multi-engine propeller system?

Anti-feathering pins are safety mechanisms designed to prevent the propeller from feathering during a normal engine shutdown on the ground. These pins stay engaged if the engine RPM drops below a certain threshold, typically around 900 RPM in a Seminole, keeping the blades in a high-pitch orientation for an easier subsequent start. However, if an engine fails in flight while at a high RPM, centrifugal force keeps these pins retracted, allowing the propeller to move into the feathered position to reduce drag.

Mastering the MEI: From Single-Engine to Multi-Engine Instructor

29 min

Mar 10, 2026

Education Career Technology

Elevate your CFI career by mastering the regulatory requirements, asymmetric aerodynamics, and engine-out procedures needed for the MEI rating. This guide breaks down FAA standards and Jeppesen principles for a successful transition to the multi-engine flight deck.

Best quote from Mastering the MEI: From Single-Engine to Multi-Engine Instructor

You lose one engine, which is fifty percent of your power, but you lose eighty percent of your performance because of all the added drag from the dead engine and the rudder deflection.

This audio lesson was created by a BeFreed community member

Input question

I would like to become an Multiengine instructor I am already a cfi can you please use FAA sources and Jeppesen

Host voices

Lena

Miles

Learning style

Deep

Knowledge sources

Practical Test Standards (PTS) - Federal Aviation Administration

https://www.faa.gov/training_testing/testing/test_standards

[PDF] Flight Instructor for Airplane Category Airman Certification Standards - Federal Aviation Administration

https://www.faa.gov/training_testing/testing/acs/cfi_airplane_acs_25.pdf

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@Erin, Investment Banking Associate , NYC

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Mastering the MEI: From Single-Engine to Multi-Engine Instructor

29 min

Mar 10, 2026

Education Career Technology

Best quote from Mastering the MEI: From Single-Engine to Multi-Engine Instructor

You lose one engine, which is fifty percent of your power, but you lose eighty percent of your performance because of all the added drag from the dead engine and the rudder deflection.

Key Takeaways

Mastering the Multi-Engine Transition

0:00

0:18

0:36

0:47

Regulatory Roadmap and the Part Sixty One Advantage

0:55

1:19

1:41

0:47

2:33

2:51

3:20

3:39

3:55

4:16

4:41

The Aerodynamics of Asymmetry and the VMC Myth

5:00

5:18

5:36

5:55

6:22

6:44

7:03

7:25

7:48

8:10

8:33

8:53

Mastering the Engine-Out Drills and Performance Calculations

9:10

9:25

9:44

10:03

10:23

10:49

0:47

11:22

11:41

2:51

12:15

12:35

12:56

Instructional Techniques for the Complex Flight Deck

13:14

13:34

13:55

2:51

14:35

14:54

15:12

15:32

15:46

16:12

16:40

16:59

The MEI Practical Test: Navigating the Oral and Flight

17:14

17:33

17:56

18:20

2:51

18:57

19:19

19:43

20:00

20:21

20:38

21:01

Common Pitfalls and How to Avoid Them

21:18

21:37

22:00

22:17

22:34

22:50

23:10

23:26

23:44

4:16

The Practical Playbook: A Step-by-Step Guide for the MEI Applicant

24:16

24:24

24:43

25:02

25:19

25:38

25:59

26:18

26:31

26:51

Final Reflections and the Path Ahead

27:06

27:25

27:43

4:16

28:17

28:38

28:53

4:16

29:05

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"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."

@Chloe, Solo founder, LA

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"Reading used to feel like a chore. Now it’s just part of my lifestyle."

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"Feels effortless compared to reading. I’ve finished 6 books this month already."

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"It is great for me to learn something from the book without reading it."

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@Cashflowbubu

From Columbia University alumni built in San Francisco

BeFreed Brings Together A Global Community Of 1,000,000 Curious Minds

See more on how BeFreed is discussed across the web

"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."

@Moemenn

"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."

@Chloe, Solo founder, LA

117

"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."

@Raaaaaachelw

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"Reading used to feel like a chore. Now it’s just part of my lifestyle."

@Erin, Investment Banking Associate , NYC

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@djmikemoore

"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."

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@SofiaP

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@Jaded_Falcon

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@OojasSalunke

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"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."

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"Reading used to feel like a chore. Now it’s just part of my lifestyle."

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@SofiaP

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@Chloe, Solo founder, LA

117

"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."

@Raaaaaachelw

"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."

@Matt, YC alum

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"Reading used to feel like a chore. Now it’s just part of my lifestyle."

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