Computer Message Verification

EN ROUTE

Unless your facility is equipped to automatically obtain acknowledgment of receipt of transferred data, when you transfer control information by computer message, obtain, via Service F, acknowledgment that the receiving center has received the message and verification of the following:

1. Within the time limits specified by a letter of agreement or when not covered by a letter of agreement, at least 15 minutes before the aircraft is estimated to enter the receiving facility's area, or at the time of a radar handoff, or coordination for transfer of control:
   1. Aircraft identification.
   2. Assigned altitude.
   3. Departure or coordination fix time.
2. Any cancellation of IFR or EAS generated VFR flight plan.