KLM1267 data quality problem


I was analysing the data quality of “AirportBoards”, based on AMS on 21-Dec, 11am:

There are hundreds of flights with “result unknown”, including for example KLM1267.

Looking for KLM1267 in the public part of flightaware.com:

The short flight time seems to indicate a data problem.

Any particular reasons for this problem that you can think of?


I’m seeing the same with other KLM flights too (eg KL1116 on Dec 27), which appear in the XML as cancelled, but if viewed on the web they have a short flight time.