Avidyne IFD flight data log — export & score every landing

1) Export the datalog to a USB drive

The IFD440 / IFD540 is a panel-mount GPS/NAV navigator — a slide-in radio-stack unit, not a primary-flight display. It writes its flight datalog to a USB flash drive at the front-panel USB port:

1. Plug a USB flash drive into the front-panel USB port.
2. Press the SYS key, then choose Download Logs.
3. Let the unit enter Maintenance Mode when it prompts, then choose to write the datalog to the USB drive. It saves one or more .csv files.

Need a drive? A 32 GB USB flash drive works. If a drive won’t read, format it to FAT32.

2) Pull the USB drive

Once the IFD finishes writing, take the drive back out of the front-panel port. A single export can hold several flights — the IFD separates each power cycle inside the file — so grab every .csv it wrote and send them all.

3) Upload both logs to landing.fyi

Your IFD writes its flight data across two logs — one with your airspeed, one with your GPS track — and landing.fyi joins them to score your landings. Select both .csv files together when you upload (drop the whole set in at once); we sort out which is which. A single file on its own can’t score, so don’t upload just one and stop.

Upload at landing.fyi →

Grab every IFD datalog .csv file from the USB drive and upload them all at once — landing.fyi scores each flight and quietly ignores any duplicates, so it's safe to select the lot.