Letter of Validation of Foreign Type Certificate or Supplemental Type Certificate to be Used in Application for Certificate of Airworthiness
Introduction
The Letter of Validation for TC or STC serves as evidence to demonstrate that the type design of an aircraft, engine, or propeller, as detailed in the Type Certificate, has been certificated to meet applicable airworthiness standards outlined in CAAT Requirement No. 17 and environmental protection standards in CAAT Requirement No. 16 and Technical Committee Requirement No. 2, as specified in the Air Navigation Act B.E. 2497 amended by the Emergency Decree Amending the Air Navigation Act B.E. 2497 B.E. 2558 Section 41/14. A Letter of Validation for TC or STC is a prerequisite for obtaining a Certificate of Airworthiness for an aircraft to be registered in Thailand (Standard or Special Category 1).
Reference Regulations
Application and required documents
The letter of validation will only be issued for the aircraft type that has not previously been validated. Prior to applying for type acceptance, the applicant should verify whether the aircraft type has already been validated by CAAT at https://www.caat.or.th/en/archives/56072. The letter of validation can be obtained by submitting the application along with the supporting documents listed below:
Procedure
The aircraft owner or possessor submits the application along with supporting documents to CAAT.
The application package will be reviewed by the assigned staff to ensure compliance will all applicable regulations.
Remark: The issuance of the Letter of Validation of TC or STC will be cancelled if additional documents found to be missing
or incorrect within 30 days after CAAT request.
The certificate package will be prepared and submitted to DG for approval.
The certificate is signed upon satisfactory evidence of compliance with applicable regulations.
The applicant is informed of the approval and receives the Letter of Validation of TC or STC.
Approval Duration
Issuance of the Letter of Validation of TC or STC must be completed within 25 working days.
Remark: Validation duration does not include applicant’s document correction period.
Letter of Validation of TC or STC Fee
Issuance the Letter of Validation of TC or STC is free.
Eligibility
Service Place/ Channel
The Civil Aviation Authority of Thailand 222 Soi Vibhavadi Rangsit 28,
Chatuchak, Chatuchak, Bangkok 10900