Four engines
Two relatively small nacelles sit beneath each wing.
Airbus widebody identification
The A340-300 closely resembles an A330 because the two families were developed together. Four engines make the identification decisive; the centre gear confirms it.

Recognition checklist
Two relatively small nacelles sit beneath each wing.
An additional two-wheel landing-gear leg retracts into the fuselage centreline.
The nose and cockpit closely resemble the A330, so they are not useful on their own.
At a glance
Published headline figures vary by configuration and operating conditions.
Make it stick
Use the visual clues in a focused image quiz with immediate explanations.