STI (A)
An applicant for an aeroplane STI certificate shall:
- Hold, or have held within the 3 years prior to the application, a pilot licence and instructional privileges appropriate to the courses on which instruction is intended.
- Have completed in an FNPT the relevant proficiency check for the class or type rating, within a period of 12 months preceding the application.
- An applicant for an STI(A) wishing to instruct on BITDs only, shall complete only the exercises appropriate for a skill test for the issue of a PPL(A).
STI (H)
An applicant for a helicopter STI certificate shall:
- Hold, or have held within the 3 years prior to the application, a pilot licence and instructional privileges appropriate to the courses on which instruction is intended.
- Have completed in an FNPT the relevant proficiency check for the class or type rating, within a period of 12 months preceding the application.
- Have completed at least 1 hour of flight time as an observer on the flight deck of the applicable type of helicopter, within the 12 months preceding the application.
Please refer to 'FCL.915.STI - Prerequisites' in UK Regulations for further guidance.
Training
An applicant for an instructor certificate shall have completed a course of theoretical knowledge and flight instruction at an ATO.
The STI training course shall include:
- At least 3 hours of flight instruction related to the duties of an STI in an FFS, FTD 2/3 or FNPT II/III, under the supervision of an FIE. (Applicants for an STI(A) wishing to instruct on a BITD only, shall complete the flight instruction on a BITD.)
- For applicants for an STI(H), the course shall also include the FFS content of the applicable TRI course.
Revalidation and Renewal
An STI certificate is issued with a validity of 3 years. However, a revalidation can be completed within the last 12 months of the expiry date. Therefore, the new expiry date of a further 3 years will be calculated from the current expiry date of the STI certificate when completed within the revalidation period.
Revalidation
To revalidate an STI certificate applicants are required to complete the following requirements, within 12 months of the expiry date of the STI certificate:
- Have conducted at least 3 hours of flight instruction in an FSTD, as part of a complete CPL, IR, PPL or class or type rating course.
- Have passed in the FSTD on which flight instruction is conducted, the applicable sections of the proficiency check for the appropriate class or type of aircraft.
For STIs(A) instructing on BITDs only, the proficiency check shall include the exercises appropriate for a skill test for the issue of a PPL(A) only.
Renewal
To renew an expired SFI certificate, applicants are required to complete the following requirements within 12 months immediately preceding the submission of their application:
- Complete refresher training as an STI at an ATO.
- Pass in the FSTD on which flight instruction is conducted, the applicable sections of the proficiency check for the appropriate class or type of aircraft in accordance with Appendix 9.
For an STI(A) instructing on BITDs only, the proficiency check shall include the exercises appropriate for a skill test for the issue of a PPL(A) only. - Conduct, in the relevant aircraft category, on a complete CPL, IR, PPL or class or type rating course, at least 3 hours of flight instruction under the supervision of an FI, a CRI, an IRI or a TRI nominated by the ATO for this purpose, including at least 1 hour of flight instruction supervised by a flight instructor examiner (FIE).
Please refer to 'FCL.940.STI - Revalidation and renewal' in UK Regulations for further guidance.
How to apply
To apply for the issue, revalidation or renewal of a Synthetic Training Instructor (STI) certificate, you will need to submit online application form SRG2159.
For information on the evidence you will need to provide, please see our webpage.
Contact us
If you have any queries, please contact the Instructors team at instructors@caa.co.uk or on 0330 022 1972 between the hours of 08:30 and 16:30 Monday to Friday.
Related Information
Regulations
- UK Regulations - for Flight Crew Licensing (Part FCL) - Subpart J
Fees
- Please refer to the UK CAA Scheme of Charges
Schools and training
Please ensure that your training provider is approved to conduct the specific course that you are undertaking.
We strongly recommend you check that your instructor and examiner hold the relevant privileges to conduct the training and any flight test, examination or assessment of competence that is being carried out.
How to find a UK examiner or UK approved school
- UK ATOs are listed in Standards Document 31
- UK examiners
Guidance
For questions relating to paperwork, such as how to obtain certified copies of documents, please refer to Guidance on documentation.
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