Final Approach Segment (FAS) Data Block consists of a set of parameters to
identify a SBAS APV I or CAT I and to define its associated path. In some regions GBAS is supported and this is also covered.
You can find documentation regarding the FAS Data Block in ICAO Document 8168 (Part III – Section 2) and in ICAO Annex 10 – Volume 1.
The data fields that make up the Data Block are protected by a cyclic redundancy check (CRC) which is a code that can detect any errors with the data fields.
Out aviation SDK assists you in working with this aviation requirement and the documentation of the specific FasDatablock API can be reviewed here.
We also have uploaded as example tools developed a few years back that shows what you can do with the API.