English Translation Version for Reference Only Number:CTSO-C162a Date of approval:Dec 8 2018 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. Ground Based Augmentation System Very High Frequency Data Broadcast Equipment 1.Purpose. This China Civil Aviation Technical Standard Order (CTSO)is for manufacturers applying for Ground Based Augmentation System (GBAS) Very High Frequency Data Broadcast (VDB)Equipment CTSO authorization (CTSOA).This CTSO prescribes the minimum performance standards that Ground Based Augmentation System Very High Frequency Data Broadcast Equipment must first meet for approval and identification with the applicable CTSO marking. 2.Applicability. This CTSO affects new application submitted after its effective date.Major design changes to article approved under this CTSOA will require a new authorization in accordance with section 21.353 of CCAR-21-R4. English Translation Version for Reference Only CAAC CTSO-C162a 3.Requirements New models of VDB equipment identified and manufactured on or after the effective date of this CTSO must meet the MPS for the VDB receiver equipment in RTCA/DO-253C Minimum Operational Perform...