The developer of the world's largest aircraft says the blimp-shaped airship sustained damage after it made a bumpy landing Wednesday on its second test flight in eastern England.

Hybrid Air Vehicles said it is trying to figure out what caused the rough landing of the 302-foot (92-meter) Airlander 10 during its 100 minute flight Wednesday in Bedfordshire, north of London.

World's largest aircraft, nicknamed the 'Flying bum', crashes in 2nd test flight https://t.co/pw4GUpQJk9 pic.twitter.com/2AxEzHYDTU

— DAILY SABAH (@DailySabah) August 24, 2016

"The Airlander experienced a heavy landing and the front of the flight deck has sustained some damage, which is currently being assessed," the company said. "Both pilots and the ground crew are safe and well and the aircraft is secured and stable at its normal mooring location."

A hybrid of blimp, helicopter and airplane, the Airlander is able to stay aloft for days at a time. It is designed to use less fuel than a plane, but carry heavier loads than conventional airships.

The aircraft was initially developed for the U.S. military for use in surveillance in Afghanistan.