It happened while the Daily Air pilots were simulating an emergency landing at the airport in Taitung City on Sunday.
The failure to deploy the landing gear was not part of the training session, and the Taiwanese airline says the forgetful co-pilot may have been too focused on the simulated emergency.
The embarrassing mistake occurred while the pilots were simulating a left engine failure and practicing take-offs and landings in the Dornier Do 228 aircraft, the China Post reported.
When it landed on its belly the plane skidded nearly 700ft before coming to a stop.
The airport was shut for two hours while a crane was brought in to lift the damaged plane off the runway and place it on a flatbed lorry.
More details on Dailymail
