Modules Revisions

ATB EASA Modules are in a constant state of review regarding quality, regulatory updates, and new technologies. We identify 3 types of updates and/or revisions.To receive a notification when any of these types of revisions occur, please Join Our Mailing List at the bottom of this page.

Minor Revisions

Identified by a decimal to the edition number.
Example: 001 becomes 001.1

A clarification or small change typically encompassing a few pages. Pages with minor revisions are provided below for you to download and/or print. These updates will remain available for 2 years from cited publication date. Please subscribe to our mailing list to be notified when these revisions occur.

Regulatory Updates

Identified by a whole number edition.
Example: 002 becomes 003

A revision dictated by an EASA rule change.

  • Part 147 Students: Your instructor will be notified of this update and arrangements will be made through your school to provide affected students with an eBook replacement module.
  • Non Part 147 Students: A notice will be sent to all mailing list subscribers. If your purchase was within two years of the regulatory change, you may request a coupon for an eBook replacement within two weeks of new version publication date.
New Editons

Identified by a whole number edition.
Example: 004 becomes 005

A Module or Submodule rewrite not required by regulation, like technology enhancements. The previous edition remains valid and within all regulatory guidelines. An email notice will be sent describing this update along with an opportunity to purchase the new version.

CAT-A Revisions
B1 Revisions
B2 Revisions
CAT-A Revisions

CAT-A Revision Logs

Module 1. Mathematics
Version Effective Date Description of Change
001 2016 01 Module Creation and Release
002 2020 02 Module Updates – Layout Adjustments

Module 2. Physics
Version Effective Date Description of Change
001 2013 12 Module Creation and Release
002 2020 02 Minor Appearance Updates
002.1 2020 05 Clarified formulas for Buoyant Force (page 2.7) and Vibration (page 2.11)
002.2 2020 05 Corrected formulas for Pendular Movement and Vibration. Sub-Module 02, page 2.11
 Download Supplement PDF

Module 3. Electrical Fundamentals
Version Effective Date Description of Change
001 2014 08 Module Creation and Release
002 2019 04 Fine tuned Sub-Module content sequence based on Appendix-A. Updated layout and styling.

Module 5. Digital Techniques/Electronic Instrument Systems
Version Effective Date Description of Change
001 2014 09 Module Creation and Release
002 2019 05 Fine tuned Sub-Module content sequence based on Appendix-A. Updated layout and styling.
002.1 2021 09 Added enhanced Welcome, Forward, EASA License and General Knowledge Requirements. No content changes.

Module 6. Materials And Hardware
Version Effective Date Description of Change
001 2019 01 Module Creation and Release

Module 7A. Maintenance Practices
Version Effective Date Description of Change
001 2020 02 Module Creation and Release
001.1 2021 10 Corrected description of file types (Sub-Module 07, pages 3.15-3.16)
 Download Supplement PDF

Module 8. Basic Aerodynamics
Version Effective Date Description of Change
001 2018 06 Module Creation and Release

Module 9A. Human Factors
Version Effective Date Description of Change
001 2018 11 Module Creation and Release

Module 10. Aviation Legislation
Version Effective Date Description of Change
001 2020 03 Module Creation and Release
002 2020 10 Enhanced or modified content within the following Sub-Modules:

  • 10.4: Complete rewrite for updated regulations.
  • 10.6: Complete rewrite for updated regulations.

Module 11A. Turbine Aeroplane Aerodynamics, Structures And Systems
Version Effective Date Description of Change
001 2020 04 Module Creation and Release

Module 11B. Piston Aeroplane Aerodynamics, Structures And Systems
Version Effective Date Description of Change
1 2017 08 Release (TEC Textbook)

Module 12. Helicopter Aerodynamics, Structures And Systems
Version Effective Date Description of Change
1 2016 03 Release (TEC Textbook)

Module 15. Gas Turbine Engine
Version Effective Date Description of Change
001 2019 01 Module Creation and Release

Module 16. Piston Engine
Version Effective Date Description of Change
001 2019 04 Module Creation and Release

Module 17A. Propeller
Version Effective Date Description of Change
001 2016 02 Module Creation and Release
002 2019 11 Minor Format Updates

B1 Revisions

EASA B1 Revision Logs

Module 1. Mathematics
Version Effective Date Description of Change
001 2016 01 Module Creation and Release
002 2017 05 Format Update and Minor Corrections
002.1 2019 07 Added “Solving Word Problems” to end of Sub-Module 02.
002.2 2020 10 Style and Layout updates.

Module 2. Physics
Version Effective Date Description of Change
001 2013 12 Module Creation and Release
002 2016 11 Format Update and Apprearance Update
003 2018 07 Refined content sequencing to Appendix 1.
003.1 2020 05 Clarified formulas for Buoyant Force – Sub‑Module 02.
003.2 2021 05 Corrected formulas for Pendular Movement and Vibration. Sub-Module 02, Page 2.11
 Download Supplement PDF

Module 3. Electrical Fundamentals
Version Effective Date Description of Change
001 2014 08 Module Creation and Release
002 2016 10 Format Updates
003 2017 03 Content Updates and Subject Clarification
004 2019 07 Fine tuned Sub-Module content sequence based on Appendix-A. Updated layout and styling.
004.1 2020 06 Page 14.5 and 14.7 – Corrected equations on parallel AC circuits and resonance.

Module 4. Electronic Fundamentals
Version Effective Date Description of Change
001 2016 01 Module Creation and Release
002 2016 05 Minor Corrections/Layout Adjustments
003 2018 07 Adjusted content for alignment to Part 66, Appendix 1. Added Static Electricity Protection to Sub-Module 02; Remove Logic Circuits from Sub-Module 1.2; other minor corrections.

Module 5. Digital Techniques/Electronic Instrument Systems
Version Effective Date Description of Change
001 2016 01 Module Creation and Release
002 2017 03 Format Update/Minor Type Corrections
002.1 2021 05 Formatting Updates – No Content Changes

Module 6. Materials And Hardware
Version Effective Date Description of Change
001 2013 01 Module Creation and Release
002 2014 07 Format Update/Minor Corrections
003 2018 07 Modified sub-module sequence in accordance to Appendix A. Added content in the following areas:

  • 6.3: Thixotropic agents; Wood preservation methods; Types of fabric defects.
  • 6.4: Stress corrosion; Exfoliated corrosion detection; Galvanic corrosion growth; Fretting corrosion.
  • 6.5: Screw threads; Dowels.
  • 6.6: Rigid fluid line sizes; Swaged fittings.
  • 6.7: Laws obeyed by springs.
  • 6.8: Bearing material and construction.
  • 6.11: Connector types, Identification codes, and ratings.

Module 7A. Maintenance Practices
Version Effective Date Description of Change
001 2016 01 Module Creation and Release
002 2016 08 Module Revisions
003 2019 10 Refined content sequencing to Appendix 1. The following content was added for clarity:

  • 7.1: International Fire Classification
  • 7.2: Tool Care
  • 7.6: Accuracy of Drilled Holes; Formula for Determining Bow
  • 7.8: Cleco Fasteners
  • 7.11: Types of Lubricants
  • 7.13: Bowden Cables
  • 7.14: Composite Bonding; Ultrasonic Inspection
  • 7.16: Example Mass And Balance Computations
  • 7.17: Storage Methods
  • 7.18: Rewrite of Non‑destructive Testing Methods
  • 7.19: Heavy Landing Inspection Checklist
003.1 2021 10 Corrected description of file types (Sub-Module 07, pages 3.15-3.16)
 Download Supplement PDF

Module 8. Basic Aerodynamics
Version Effective Date Description of Change
001 2015 01 Module Creation and Release
002 2016 07 Format Update and Minor Content Revisions
003 2018 07 Refined content sequencing to Appendix 1. The following content was added for clarity:

  • 8.2: Free Stream Air Flow, Wash-In/Wash-Out
  • 8.3: Steady State Flight; High Speed Aerodynamics; Helicopter Aerodynamics
  • 8.4: Passive and Active Stability

Module 9A. Human Factors
Version Effective Date Description of Change
001 2015 01 Module Creation and Release
002 2018 10 Typographic and Layout Updates – No Content Change

Module 10. Aviation Legislation
Version Effective Date Description of Change
001 2014 02 Module Creation and Release
002 2017 05 Format Update/Addition of Part-T, Sub-Module 06.
003 2019 08 Updated to current regulations, and reduction of Sub-Module 04 to appropriate level 1 requirements.
004 2020 10 Enhanced or modified content within the following Sub-Modules:

  • 10.1: Updated to current regulations EU 2018/1139 and 376/2014
  • 10.2: Definitions section added
  • 10.3: Definitions section added
  • 10.4: Complete rewrite for updated regulations
  • 10.5: Definitions section added
  • 10.6: Complete rewrite for updated regulations
  • 10.7: Definitions section added
005 2021 04 10.3: Corrected answer to question 3-2 from 2 to 3.

Module 11A. Turbine Aeroplane Aerodynamics, Structures And Systems
Version Effective Date Description of Change
001 2015 10 Module Creation and Release
002 2016 01 Minor Revisions
003 2017 09 Format Update
003.1 2019 02 Added section on Pneumatic and Pressure Pumps in Sub-Module 16.
003.2 2019 05 Corrected incorrect answers in Sub-Module 20.
004 2019 12 Typographic format updated; Sequencing of content to Appendix 1 refined. Enhanced or modified content within the following Sub-Modules:

  • 11.2: Bonding Procedures, NACA Scoops
  • 11.3: Flight Control Surfaces, Image of A330 emergency slide image of turbine nacelle
  • 11.7: Images of interior paneling and cargo container added for clarity
  • 11.19: Common Core Systems
  • 11.20: IFE Systems and Servers
  • 11.21: Airbus Information System Architecture
004.1 2021 04 Enhanced content of M11A Sub-Module 08(b).

Module 12. Helicopter Aerodynamics, Structures And Systems
Version Effective Date Description of Change
001 In Production Module Creation and Release
     

Module 15. Gas Turbine Engine
Version Effective Date Description of Change
001 2016 01 Module Creation and Release
002 2016 08 Module Revisions
003 2017 11 Format Updates
004 2019 01 Fine tuned Sub-Module content sequence based on Appendix-A. Updated layout and styling. Enhanced or modified content within the following Sub-Modules:

  • 15.1: Definition of Energy; Constructional Arrangements
  • 15.2: Operating Principles; EPR Measurement, Engine Ratings
  • 15.3: Ice Protection
  • 15.4: Air Flow Control; Compressor Ratio
  • 15.5: Operation of Combustion Chambers
  • 15.6: Turbine Blade Operation
  • 15.9: Spectrometric Oil Analysis
  • 15.12: Turbine Engine Cooling; Bearing Chamber Seal; Anti-icing
  • 15.13: Starter System Safety
  • 15.14: Fuel Flow Indication
  • 15.15: Operation and Application; Afterburner Systems
  • 15.16: Reduction Gears; Engine Control; Overspeed Devices
  • 15.17: Drive Systems
  • 15.19: Cowling C-ducts; Control Cables
  • 15.21: Health and Trend Monitoring; FOD
  • 15.22: Fuel System Preservation

Module 16. Piston Engine
Version Effective Date Description of Change
001 2016 01 Module Creation and Release
002 2017 02 Format Update
003 2020 06 Realignment to Part-66 Appendices. Enhanced figures throughout entire textbook.

Module 17A. Propeller
Version Effective Date Description of Change
001 2016 01 Module Creation and Release
002 2019 10 Minor Format Updates

B2 Revisions

EASA B2 Revision Logs

Module 1. Mathematics
Version Effective Date Description of Change
001 2016 01 Module Creation and Release
002 2017 05 Format Update and Minor Corrections
002.1 2019 07 Added “Solving Word Problems” to end of Sub-Module 02.
002.2 2020 10 Style and Layout updates.

Module 2. Physics
Version Effective Date Description of Change
001 2018 12 Module Creation and Release
002 2020 05 Clarified formulas for Buoyant Force (page 2.7) and Vibration (page 2.11)
002.1 2021 05 Corrected formulas for Pendular Movement and Vibration. Sub-Module 02, page 2.11 and page 2.12.
 Download Supplement PDF

Module 3. Electrical Fundamentals
Version Effective Date Description of Change
001 2014 08 Module Creation and Release
002 2016 10 Format Updates
003 2017 03 Content Updates and Subject Clarification
004 2019 07 Fine tuned Sub-Module content sequence based on Appendix-A. Updated layout and styling.
004.1 2020 06 Page 14.5 and 14.7 – Corrected equations on parallel AC circuits and resonance.

Module 4. Electronic Fundamentals
Version Effective Date Description of Change
001 2016 01 Module Creation and Release
002 2019 10 Format Update

Module 5. Digital Techniques/Electronic Instrument Systems
Version Effective Date Description of Change
001 2015 01 Module Creation and Release
002 2017 02 Format Update
002.1 2019 11 Corrections to Figures: 3-5, 5-14, 8-4, 9-4.

Module 6. Materials And Hardware
Version Effective Date Description of Change
001 2018 08 Module Creation and Release
     

Module 7A. Maintenance Practices
Version Effective Date Description of Change
001 2020 03 Module Creation and Release
001.1 2021 04 Enhanced Sub-Module 04; IFR 4000 and 6000 test equipment.
001.2 2021 10 Corrected description of file types (Sub-Module 07, pages 3.15-3.16)
 Download Supplement PDF

Module 8. Basic Aerodynamics
Version Effective Date Description of Change
001 2015 01 Module Creation and Release
002 2016 07 Format Update and Minor Content Revisions
003 2018 07 Refined content sequencing to Appendix 1. The following content was added for clarity:

  • 8.2: Free Stream Air Flow, Wash-In/Wash-Out
  • 8.3: Steady State Flight; High Speed Aerodynamics; Helicopter Aerodynamics
  • 8.4: Passive and Active Stability

Module 9A. Human Factors
Version Effective Date Description of Change
001 2015 01 Module Creation and Release
002 2018 10 Typographic and Layout Updates – No Content Change

Module 10. Aviation Legislation
Version Effective Date Description of Change
001 2014 02 Module Creation and Release
002 2017 05 Format Update/Addition of Part-T, Sub-Module 06.
003 2019 08 Updated to current regulations, and reduction of Sub-Module 04 to appropriate level 1 requirements.
004 2020 10 Enhanced or modified content within the following Sub-Modules:

  • 10.1: Updated to current regulations EU 2018/1139 and 376/2014
  • 10.2: Definitions section added
  • 10.3: Definitions section added
  • 10.4: Complete rewrite for updated regulations
  • 10.5: Definitions section added
  • 10.6: Complete rewrite for updated regulations
  • 10.7: Definitions section added
005 2021 04 10.3: Corrected answer to question 3-2 from 2 to 3.

Module 11A. Turbine Aeroplane Aerodynamics, Structures And Systems
Version Effective Date Description of Change
001 2015 10 Module Creation and Release
002 2016 01 Minor Revisions
003 2017 09 Format Update
003.1 2019 02 Added section on Pneumatic and Pressure Pumps in Sub-Module 16.
003.2 2019 05 Corrected incorrect answers in Sub-Module 20.
004 2019 12 Typographic format updated; Sequencing of content to Appendix 1 refined. Enhanced or modified content within the following Sub-Modules:

  • 11.2: Bonding Procedures, NACA Scoops
  • 11.3: Flight Control Surfaces, Image of A330 emergency slide image of turbine nacelle
  • 11.7: Images of interior paneling and cargo container added for clarity
  • 11.19: Common Core Systems
  • 11.20: IFE Systems and Servers
  • 11.21: Airbus Information System Architecture
004.1 2021 04 Enhanced content of M11A Sub-Module 08(b).

Module 12. Helicopter Aerodynamics, Structures And Systems
Version Effective Date Description of Change
001 In Production Module Creation and Release
     

Module 13. Aircraft Aerodynamics, Structures And Systems
Version Effective Date Description of Change
001 2016 01 Module Creation and Release
002 2017 02 Format Update
003 2017 08 Module 03 Revisions. Typo corrections in Sub-Modules 03, 04 and 08.
004 2020 02 Enhanced or modified content within the following Sub-Modules:

  • 13.3: Added Autopilot Modes of Operation.
  • 13.4: Reorganized based on Part‑66 2018 changes; added content: ADS-B and Datalink; Corrected Figures 4-78 and 4-79.
  • 13.7: Added Fly-By-Wire Failsafe and Fly-By-Wire operation.
004.1 2021 04 Enhanced or modified content within the following Sub-Modules:

  • 13.4: Corrected 150 Mhz to 150 Hz (page 4.46).
  • 13.8: Corrected Figure 8-12; Engine Pressure Ratio (EPR). Corrected 14.7 psi to 14.5 psi.

Module 14. Propulsion
Version Effective Date Description of Change
001 2016 02 Module Creation and Release
002 2017 11 Module Revisions
003 2019 04 Fine tuned Sub-Module content sequence based on Appendix-A. Updated layout and styling.
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