Boeing 737-400 (B734)
WHAT AIRCRAFT IS B734?
B734 is the ICAO aircraft type designator for the Boeing 737-400 — classic 737, now mostly freight. When you tap a blip on a radar scope, flight tracker, or spotting app and see "B734", this is what's overhead.
Want to catch one in the wild? Open the live scope, enter your postcode, and watch for the type code on any contact. Tap it for the airline, registration, route and a photo.