Advanced repair course of composite structures

Course code:  TECH-020 Advanced Composite Repair (Stage III)

Course duration: 5 Day

All EFC courses comply SAE-CACRC, FAA, CAA and EASA standards.

This is our TOP 'level Stage III'  Hands-On follow-up course for the TECH 010, (Stage II) meant for personnel of technical departments having successfully completed the TECH 010 - Stage II course and wanting to acquire the upper level of Aviation and Aerospace composite repair. 

Advised Pre Requisites
EFC course TECH-001-(Stage I), Course TECH 010-(Stage II) or equivalent level. Please contact us to assess your equivalent level of training.

Personnel of technical departments who want to become an Composite Repair technician who has full understanding of advanced in-depth skills in Advanced Composite Repair & damage assessment and will be able to repair complex composite damages in accordance with the OEM structural repair manuals. 

Number of participants:  Minimum 3 and Maximum 12 per course*.
* Courses will be confirmed as running by EFC as soon as sufficient applications are received! 

At the end of this course the participant:

  • Must be able to work as a team but also independently with minimum supervision
  • Must be attentive to details
  • Will work according to Safety regulations and can recognize hazardous materials & situations
  • Can read and understand OEM Ply-Lay-Up drawings
  • Will have the utmost in-depth understanding of vacuum bag techniques
  • Will have advanced knowledge of materials and their properties
  • Can assess several types of damage by photography & record keeping 
  • Can repair several damage types according to the OEM manuals
  • Has the excellent practical experience in taper sanding with various taper ratios and variations in overlaps as required by the OEM
  • Can recognize, cut, sand and remove different honeycomb core materials
  • Knows how to use and /or program and monitor different Heat systems for curing
  • Knows how to fabricate and make use of quick composite reinforced repair tooling 
  • Can pre-drill and drill holes in edge bands of composite panels with drill fixtures and bushings
  • Can fabricate a Quick repair support doubler and a part using Heat systems
  • Must be able to understand criteria required in AIR 4838 (Latest revision)

Content Theory (level 2-3)

  • O.E.M. Comparison of manuals and other necessary documents
  • O.E.M. Advanced Ply Lay-Up / blue print reading and interpretation
  • O.E.M. Additional Repair manual Repair Damage assessment and record keeping through documentation and photography
  • Composite awareness & damage incident reporting
  • Composite Materials & processes
  • Surface prep & different repair type assessments and composite faster removal
  • Composite fastener hole drilling
  • Use of Hot-Bonding equipment, and Pro’s and Con’s of different heating devises
  • Application of Quick Repair Tooling
  • Vacuum support technique on repair area single side repairs
  • Safety

Workshop  (Level 3)
The participant will:

  • Be intensively individually monitored and can perform actual repairs on curved reinforced sandwich panels by various repairs methods
  • Be able to perform Damage assessment by inspection and photography and have to keep record
  • Be able to prepare a Quick support Tool, cure it at low temp and apply release agent to it
  • Be able to perform vacuum leak checks on every repair, keep record of it
  • Be able to make use of different types of heating equipment
  • Be able to apply the 'Felt part support technique' for repair
  • Be able to prepare surface and repair steps and determination of working order steps
  • Be able to prepare a support doubler (Tool) on a damaged part
  • Be able to prepare a repair doubler next to the damage area on a part 
  • Be able to attach a doubler with adhesive and composite fasteners on an existing panel and cure
  • Be able to perform post repair inspection on all repair and keep record
  • Be able to program, monitor Hot bonding equipment, change programs and parameters during curing


  • Multiple choice questions from each of the teachings Levels 2-3
  • Successful completion is 75% correct answers (The examination is closed book)
  • The practical mark will be the average of all marks gained from the practical exercises Assessment activities are built into our courses, to give feedback on the achievement and personal potential and kept record in a personal logbook per student.  
  • All grades will be recorded in the participant individual training records and kept on record at EFC for unlimited time (compliant with Reference EASA Commission Regulation (EU) No 1321/2014)
  • A certifcate of accomplishment is handed out to each participant.

This course can also be held at our facility in, Bicester UK at the Bicester Banbury College. 
Minimum participants; 4  and Max. 12 . See our Up coming course schedule
Contact our purchasing manager Rolf Hovener via e-mail at

Request for 'On-Site' Training
This course can be requested for an 'On-Site' training at your company under certain "Terms & Conditions"
It will involve additional cost such as: Instructor(s) Travel, lodging, daily allowance, shipping /ensuring material and bringing in equipment.

Note for companies only:

  • If required, our Training course can be tailored made to meet your specific needs. 
  • Course dates as noted on our schedule can be adjusted on request to a required starting date.

For information & requirements, contact our business & purchasing manager Rolf Hovener via e-mail at or Owner / Founder Bert Groenewoud via e-mail at

Course Pricing
All listed course prices are Excl VAT. (Dutch VAT is 21%). EFC complies with Dutch tax laws. 
On request, companies can be sent an invoice instead of paying direct on-line with PayPal, IDEAL or credit card.