Why are there flight file numbers missing from the flight file sequence on my SD card?

There is a small window of time between when the Vision 1000 file sequence number is obtained and when it is written to the SD card. If the Vision 1000 is powered on, and then powered off a short time later, you will have a lapse in flight file sequence numbers on the SD card. In order to avoid a loss of sequence in flight file numbers, let the Vision 1000 complete the startup sequence and stay on for at least one minute.