Scenario, which happened last week.
Aircraft has EOBT AND Flight planned dep time of 0730.
Due to large delays at destination, CTOT comes through of 1215.
To keep the flight plan updated and within tolerance of HCS, the Handling agent / company update the planned ETD to 1200.
Three minutes later an CTOT is issued of 1510 !!!!!
By doing what is required in updating a flight-planned ETD, they attracted a further 2hrs and 55min delay. We checked with TMFMP and they said that if they had left the ETD alone then the original CTOT would have remained unchanged. However if they had done that then the flight plan would have dropped out of HCS!
The two do not appear to be working in harmony?
Comments anyone - confused