Why SSIM files fail quietly — and why validation matters
An SSIM schedule can be wrong without ever raising an error. What goes wrong in real files, what it costs downstream, and why validation has to come first.
Active Flights · Blog
#validation
3 articles tagged #validation.
Articles
The trailer record: the checksum you shouldn't skip
The last line of an SSIM file — the record type 5 trailer — is easy to ignore, and it's how you know the file arrived whole. Here's what it carries and why checking it is basic hygiene.
The data-quality edge cases that break schedule parsers
A field guide to the real-world quirks in SSIM feeds — time modes, overnight arrivals, DST, operational suffixes, season edges — that turn a 'simple' fixed-width parser into a maintenance treadmill.