So far the guessing.
Now for some facts:
- The crew filed to the new airport.
- There was no confusion regarding opening status of the new airport.
- The company has been closely monitoring the whole transition.
- There were several KLM teams who have visited the new airport the final months before it was opened, including a delegation of flight operations.
- The crew of KL873 made two approach attempts at the new airport.
- On both attempts they had insufficient visual reference to continue descent below descent limit so on both occassions a go-around was made.
- After the second go-around the crew decided to divert to Mumbai.
How should I know this? Maybe my username gives a hint......