CTSO-C150a Aircraft Seals.pdf

English Translation Version for Reference Only Number:CTSO-C150a Date of approval:Jun 4 2019 CAAC Approved by:Xu Chaoqun China Civil Aviation Technical Standard Order This China Civil Aviation Technical Standard Order (CTSO)is issued according to Part 37 of the China Civil Aviation Regulations(CCAR-37).Each CTSO is a criterion which the concerned aeronautical materials parts or appliances used on civil aircraft must ply with when it is presented for airworthiness certification. Aircraft Seals 1.Purpose. This China Civil Aviation Technical Standard Order (CTSO)is for manufacturers applying for aircraft seals CTSO authorization (CTSOA). This CTSO prescribes the minimum performance standards (MPS)that aircraft seals must first meet for approval and identification with the applicable CTSO marking. 2.Application. This CTSO affects new applications submitted after its effective date. Major design changes to article approved under this CTSO will require a new authorization in accordance with section 21.353 of CCAR-21-R4 to apply for new CTSOA. 3.Requirements. Aircraft seals that are to be identified with this CTSO and that are English Translation Version for Reference Only CAAC CTSO-C150a manufactured on or after the date of this CTSO must meet the MPS specified in the documentation test requirements in appendix 1 Aircraft Seal Property Test Requirements. a.Functionality This CTSO's standards apply to seals for static and dynamic aircraft applications in pneumatic hydraulic envir...