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- VFR Flight Plans: VFR Flight Plans remain within the LMFS system throughout the duration of a flight. Once you file a VFR flight plan, it can be amended until cancelled or up to 2 hours past the estimated time of departure (ETD). It can be activated within 30 minutes of the current time (before or after). After activation, the flight plan can be amended until the flight plan is closed. The flight plan must be closed within 30 minutes after the estimated time of arrival (ETA). Note: LMFS offers an advanced service that sends a notification to a pilot to close their flight plan before it is overdue - one reason to considered credentialed filing. You may also consider such a reminder in your own application.
- IFR Flight Plans: IFR Flight Plans are routed to the appropriate ARTCC for the flight to be managed by ATC. At 3 hours prior to ETD (or immediately if filed within this window), it is transmitted to ATC. When the flight plan is ROGERED by ATC, the flight plan will not be accessible via web services after ETD. A flight plan can be amended or cancelled up to 30 46 minutes prior to ETD. After that, the pilot will need to contact the requisite ATC center to manage the flight plan.
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