# What happens if I activate VFR flight plan later than filed ETD?

Let's say I filed a VFR flight plan with ETD (1500), en route (2 hours), ETA (1700)

If I depart and activate the plan at 1600, now the new ETA will be 1800 which is an hour later the the filed ETA. Is the ETA changed automatically on the system? or do I have to contact FSS and change to prevent initiation of the search and rescue?

• When you call FSS to activate your flight plan you give them your time of departure. Unless your estimated time en route changes, the ETA will be amended correctly. – JScarry Jan 28 '17 at 21:14
• Are you asking about a specific country or jurisdiction? – Pondlife Jan 29 '17 at 16:48

Assuming that you've submitted a Delay Message in order to prevent your flightplan from being deleted you have to do nothing at all.

In your flightplan you only state your ETD (Expected Time of Departure) and ETE (Estimated Time Enroute). Your ETA (Estimated Time of Arrival) will be calculated and relayed to all stations in need of the ETA by AIS (Aeronautical Information Service).

Filed ETD: 1500